CASCACascade Atlas

Evidence dossier

CVE-2012-1889

Microsoft XML Core Services 3.0, 4.0, 5.0, and 6.0 accesses uninitialized memory locations, which allows remote attackers to execute arbitrary code or cause a denial of service…

Exploited in the wild (CISA KEV since Jun 8, 2022). NVD reports CVSS 3.1 8.8. EPSS estimates 83.6% exploit likelihood as of Aug 27, 2026.

82.9–84.5Priority evidence range
Evidence current through Aug 27, 2026, 6:09 PM UTC

As of Aug 27, 2026

Normalized restatement

Microsoft XML Core Services 3.0, 4.0, 5.0, and 6.0 accesses uninitialized memory locations, which allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via a crafted web site.

State
PUBLISHED
Published
Jun 13, 2012
Updated
Oct 22, 2025
Evidence coverage
97%

Evidence chronology

What was known when

Download this view's receipt →
  1. Source dateSource date omittedFirst observed by CASCA
    CISA-ADP

    Record text: CISA ADP Vulnrichment

    Inspect raw assertion
    Field
    container
    Value
    CISA ADP Vulnrichment
    Original evidence ↗
  2. Source dateSource date omittedFirst observed by CASCA
    CVE Program

    Record text: CVE Program Container

    Inspect raw assertion
    Field
    container
    Value
    CVE Program Container
    Original evidence ↗
  3. Source dateSource date omittedFirst observed by CASCA
    microsoft

    Record text: Microsoft XML Core Services 3.0, 4.0, 5.0, and 6.0 accesses uninitialized memory locations, which allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via a crafted web site.

    Inspect raw assertion
    Field
    container
    Value
    Microsoft XML Core Services 3.0, 4.0, 5.0, and 6.0 accesses uninitialized memory locations, which allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via a crafted web site.
    Original evidence ↗
  4. Source dateFirst observed by CASCA
    CISA KEV

    Exploitation cataloged: Microsoft XML Core Services Memory Corruption Vulnerability

    Inspect raw assertion
    Field
    observed_exploitation
    Value
    Microsoft XML Core Services Memory Corruption Vulnerability
    Original evidence ↗
  5. Source dateFirst observed by CASCA
    FIRST EPSS

    EPSS score: 83.64% probability · 99.67th percentile

    Inspect raw assertion
    Field
    model_probability
    Value
    Probability 0.836380000000; percentile 0.996660000000
    Original evidence ↗
ExploitationCatalog member

CISA KEV · catalog date Jun 8, 2022 · first observed Jul 19, 2026

Exploit likelihood83.64%

FIRST EPSS · score date Aug 27, 2026 · 99.7th percentile · first observed Aug 27, 2026

SeverityCVSS 8.8

NVD · CVSS 3.1 · first observed Jul 19, 2026 · same-version scores align in this snapshot

Evidence detail

Source limits and decisions

Why each evidence state has this value

casca-unknown-reasons-v1
Exploitation statusEvidence supported

Eligible evidence is present for this bounded claim.

Revision
evidence-policy-v1.1.0
Cutoff
Aug 27, 2026
Resolution
None
Exploit likelihoodEvidence supported

Eligible evidence is present for this bounded claim.

Revision
evidence-policy-v1.1.0
Cutoff
Aug 27, 2026
Resolution
None
Severity assessmentEvidence supported

Eligible evidence is present for this bounded claim.

Revision
casca-direct-cvss-eligibility-v1
Cutoff
Aug 27, 2026
Resolution
None
Affected productsSource-reported scope

The cited source assertion is retained while canonical product linkage remains open.

Revision
casca-factor-d-obligations-v1
Cutoff
Aug 27, 2026
Resolution
Resolve identity

Source comparison

Who said what

CISA-ADPIndependent enrichment
Record text

CISA ADP Vulnrichment

Inspect raw assertion
Field
container
Value
CISA ADP Vulnrichment
Source dateSource date omittedFirst observed by CASCAOriginal evidence ↗
CVE ProgramDerivative copy
Record text

CVE Program Container

Inspect raw assertion
Field
container
Value
CVE Program Container
Source dateSource date omittedFirst observed by CASCAOriginal evidence ↗
microsoftOriginal assertion
Record text

Microsoft XML Core Services 3.0, 4.0, 5.0, and 6.0 accesses uninitialized memory locations, which allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via a crafted web site.

Inspect raw assertion
Field
container
Value
Microsoft XML Core Services 3.0, 4.0, 5.0, and 6.0 accesses uninitialized memory locations, which allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via a crafted web site.
Source dateSource date omittedFirst observed by CASCAOriginal evidence ↗
CISA KEVOriginal assertion
Exploitation cataloged

Microsoft XML Core Services Memory Corruption Vulnerability

Inspect raw assertion
Field
observed_exploitation
Value
Microsoft XML Core Services Memory Corruption Vulnerability
Source dateFirst observed by CASCAOriginal evidence ↗
FIRST EPSSOriginal assertion
EPSS score

83.64% probability · 99.67th percentile

Inspect raw assertion
Field
model_probability
Value
Probability 0.836380000000; percentile 0.996660000000
Source dateFirst observed by CASCAOriginal evidence ↗

Applicability

Cited product scope

Trace impact →
29Underlying assertions
15Canonical products
4Target assertions
25Constraint assertions

Grouped from 4 configuration nodes in this exact snapshot. Visual grouping is navigational; asset exposure and root cause require cited evidence.

Identity source boundaries
  • Cpe dictionary1,775,266 records · observed through 2026-07-21T06:45:29.809Z27d65b0f-b718-4b4f-bb79-c47c68d09dfa
  • Cpe match643,502 records · observed through 2026-07-21T08:13:17.697Z955dae73-7302-438b-aee1-058d7cc5d48e

16 scope groups

microsoft · source assertedn/an/aDirect source scope
Affected: n/a
Source-reported scope

Canonical linkage remains open; the cited source assertion is retained below.

Inspect raw assertion[{"status": "affected", "version": "n/a"}]
NVD CPE · APPLICATIONmicrosoftexpression_webEnvironmental constraint · 2 assertions
Version 2; Version sp1Canonical identity product-f35651af72bf4b310bf6b6513633b72302209e3256792fd15eeb026bc1dae255Linked exact
Scope constrained
Inspect raw assertions
  1. cpe:2.3:a:microsoft:expression_web:sp1:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Environmental constraint
    Configuration
    1 · node/1 · match 1
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    8038bce0-23c5-4a73-b4b3-a1143de9c1a1
  2. cpe:2.3:a:microsoft:expression_web:2:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Environmental constraint
    Configuration
    1 · node/1 · match 0
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    f6761a1c-ec1c-4b00-8126-d58dab51267a
NVD CPE · APPLICATIONmicrosoftgrooveEnvironmental constraint · 2 assertions
Version 2007Canonical identity product-1283048724f4420f733c1c832daf38bf8a8cb06d8a95804c9acd55b4a6665b93Linked exact
Scope constrained
Inspect raw assertions
  1. cpe:2.3:a:microsoft:groove:2007:sp3:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Environmental constraint
    Configuration
    1 · node/1 · match 3
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    f73ce423-638e-406f-ad0a-84049b56da8c
  2. cpe:2.3:a:microsoft:groove:2007:sp2:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Environmental constraint
    Configuration
    1 · node/1 · match 2
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    5075b5f5-5018-4def-b77d-e75c09cb3df3
NVD CPE · APPLICATIONmicrosoftgroove_serverEnvironmental constraint · 2 assertions
Version 2007Canonical identity product-124588585a4b69d206f7350ded6f6085f2cd0619e33dbe7c7bb0841ad2d6958eLinked exact
Scope constrained
Inspect raw assertions
  1. cpe:2.3:a:microsoft:groove_server:2007:sp2:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Environmental constraint
    Configuration
    1 · node/1 · match 4
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    8d61b21f-e1a1-421a-ba3e-5d0d294a4325
  2. cpe:2.3:a:microsoft:groove_server:2007:sp3:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Environmental constraint
    Configuration
    1 · node/1 · match 5
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    11874823-f6b3-4948-9a7b-fa903ef31005
NVD CPE · APPLICATIONmicrosoftofficeEnvironmental constraint · 3 assertions
Version 2003; Version 2007Canonical identity product-f4efee17050cd92d62299077c43827052b373ddcb783c02caa43c2fbb378d2f4Linked exact
Scope constrained
Inspect raw assertions
  1. cpe:2.3:a:microsoft:office:2003:sp3:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Environmental constraint
    Configuration
    1 · node/1 · match 6
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    a332d04d-cc8c-4f68-a261-ba2f2d8ead1e
  2. cpe:2.3:a:microsoft:office:2007:sp2:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Environmental constraint
    Configuration
    1 · node/1 · match 7
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    08af794a-435d-4171-9dbb-eb7faed96dba
  3. cpe:2.3:a:microsoft:office:2007:sp3:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Environmental constraint
    Configuration
    1 · node/1 · match 8
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    feecd12a-5bef-4675-b62e-86cf4a7474d7
NVD CPE · APPLICATIONmicrosoftoffice_compatibility_packEnvironmental constraint · 2 assertions
Version not applicableCanonical identity product-fe758137686484ffb07abeab90c90f69f48242b9bb56d3d0eb99f12d1ca3aa5dLinked exact
Scope constrained
Inspect raw assertions
  1. cpe:2.3:a:microsoft:office_compatibility_pack:-:sp3:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Environmental constraint
    Configuration
    1 · node/1 · match 10
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    71af058a-2e5d-4b11-88db-8903c64b13c1
  2. cpe:2.3:a:microsoft:office_compatibility_pack:-:sp2:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Environmental constraint
    Configuration
    1 · node/1 · match 9
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    55aa5cc4-af80-49a2-acd1-5644aa971044
NVD CPE · APPLICATIONmicrosoftoffice_word_viewerEnvironmental constraint · 1 assertions
Version not applicableCanonical identity product-d4961dfd8a4399733262c3c8374d834756c5c17f84bd52de66db3993629d4b40Linked exact
Scope constrained
Inspect raw assertion
  1. cpe:2.3:a:microsoft:office_word_viewer:-:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Environmental constraint
    Configuration
    1 · node/1 · match 11
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    c64b2636-8f96-48ba-921f-a8fa0e62de63
NVD CPE · APPLICATIONmicrosoftsharepoint_serverEnvironmental constraint · 2 assertions
Version 2007Canonical identity product-77f9def9702aa8ece74aa62c4de32bc72b167cb6f10f2eff44492cf46afc2e03Linked exact
Scope constrained
Inspect raw assertions
  1. cpe:2.3:a:microsoft:sharepoint_server:2007:sp3:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Environmental constraint
    Configuration
    1 · node/1 · match 13
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    6b7aea5e-c3d7-4e6d-96f0-5f9a175631c9
  2. cpe:2.3:a:microsoft:sharepoint_server:2007:sp2:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Environmental constraint
    Configuration
    1 · node/1 · match 12
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    9c24fb09-dbad-4f62-bbd6-b81b9ec83d56
NVD CPE · OPERATING SYSTEMmicrosoftwindows_7Environmental constraint · 2 assertions
Version not applicableCanonical identity product-f20a05098a41a238f96b56b817d0482887bb39ad40620198bbe05da10ee02ffcLinked exact
Scope constrained
Inspect raw assertions
  1. cpe:2.3:o:microsoft:windows_7:-:sp1:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Environmental constraint
    Configuration
    0 · node/1 · match 1
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    c2b1c231-de19-4b8f-a4aa-5b3a65276e46
  2. cpe:2.3:o:microsoft:windows_7:-:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Environmental constraint
    Configuration
    0 · node/1 · match 0
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    e33796db-4523-4f04-b564-adf030553d51
NVD CPE · OPERATING SYSTEMmicrosoftwindows_8Environmental constraint · 1 assertions
Version not applicableCanonical identity product-5a559e3d4b779565d6fa99223972e75a4cba4d476b27b830a78ab8eb44d5bef2Linked exact
Scope constrained
Inspect raw assertion
  1. cpe:2.3:o:microsoft:windows_8:-:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Environmental constraint
    Configuration
    0 · node/1 · match 2
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    0d229e41-a971-4284-9657-16d78414b93f
NVD CPE · OPERATING SYSTEMmicrosoftwindows_server_2003Environmental constraint · 2 assertions
Version not applicableCanonical identity product-21c8a455c6651c09ac3fd0874c5219dd6081913f4835e8de22662b3821fec60bLinked exact
Scope constrained
Inspect raw assertions
  1. cpe:2.3:o:microsoft:windows_server_2003:-:sp2:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Environmental constraint
    Configuration
    0 · node/1 · match 4
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    1d929aa2-ee0b-4aa1-805d-69bcca11b77f
  2. cpe:2.3:o:microsoft:windows_server_2003:-:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Environmental constraint
    Configuration
    0 · node/1 · match 3
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    e3527f41-a6ed-437d-9833-458a2c60c2a3
NVD CPE · OPERATING SYSTEMmicrosoftwindows_server_2008Environmental constraint · 3 assertions
Version not applicable; Version r2Canonical identity product-217b1ab3d25f361a639824f86753d418b35aa2a816ee370bb71b5d1dd883d87aLinked exact
Scope constrained
Inspect raw assertions
  1. cpe:2.3:o:microsoft:windows_server_2008:r2:*:*:*:*:*:x64:*
    Official link
    Linked exact
    Role
    Environmental constraint
    Configuration
    0 · node/1 · match 6
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    b7674920-ae12-4a25-be57-34aedda74d76
  2. cpe:2.3:o:microsoft:windows_server_2008:r2:sp1:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Environmental constraint
    Configuration
    0 · node/1 · match 7
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    2aca9287-b475-4af7-a4da-a7143cef9e57
  3. cpe:2.3:o:microsoft:windows_server_2008:-:sp2:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Environmental constraint
    Configuration
    0 · node/1 · match 5
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    5f422a8c-2c4e-42c8-b420-e0728037e15c
NVD CPE · OPERATING SYSTEMmicrosoftwindows_server_2012Environmental constraint · 1 assertions
Version not applicableCanonical identity product-5a80416e92fed0cddbb3d4f3840218b448dee11159824ad25a0353da566963feLinked exact
Scope constrained
Inspect raw assertion
  1. cpe:2.3:o:microsoft:windows_server_2012:-:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Environmental constraint
    Configuration
    0 · node/1 · match 8
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    a7df96f8-ba6a-4780-9ca3-f719b3f81074
NVD CPE · OPERATING SYSTEMmicrosoftwindows_vistaEnvironmental constraint · 1 assertions
Version not applicableCanonical identity product-c6332934cac78bf2604a03402cb66568f867ce86c773d4333d1205e477bf93a9Linked exact
Scope constrained
Inspect raw assertion
  1. cpe:2.3:o:microsoft:windows_vista:-:sp2:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Environmental constraint
    Configuration
    0 · node/1 · match 9
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    bf1ad1a1-ee20-4bce-9ee6-84b27139811c
NVD CPE · OPERATING SYSTEMmicrosoftwindows_xpEnvironmental constraint · 1 assertions
Version not applicableCanonical identity product-64e458557132a0a0a8bbaccf808d742614fb319511c19c0d45dd39b15a52fcc7Linked exact
Scope constrained
Inspect raw assertion
  1. cpe:2.3:o:microsoft:windows_xp:-:sp3:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Environmental constraint
    Configuration
    0 · node/1 · match 10
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    c9392d35-7bf5-48e9-879b-bbde9a9e9ab9
NVD CPE · APPLICATIONmicrosoftxml_core_servicesVulnerable target · 4 assertions
Version 3.0; Version 4.0; Version 5.0; Version 6.0Canonical identity product-3d00d4529178d601084d33646b52c0c928dc3368b5602bfe0c34e5d4087ac5daLinked exact
Scope supported
Inspect raw assertions
  1. cpe:2.3:a:microsoft:xml_core_services:4.0:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Vulnerable target
    Configuration
    0 · node/0 · match 1
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    3c9b9be3-6f83-469e-834f-3e00cfecd8e2
  2. cpe:2.3:a:microsoft:xml_core_services:5.0:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Vulnerable target
    Configuration
    1 · node/0 · match 0
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    9b91a0aa-44c0-4ed8-a7ac-54c9c83ffefe
  3. cpe:2.3:a:microsoft:xml_core_services:3.0:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Vulnerable target
    Configuration
    0 · node/0 · match 0
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    73052210-0b42-46aa-9f28-aae3e9b6de87
  4. cpe:2.3:a:microsoft:xml_core_services:6.0:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Vulnerable target
    Configuration
    0 · node/0 · match 2
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    4170fcb7-274c-4318-b7a1-8f18de604a2d

Affected-product evidence

Accepted scope and product mapping

1 canonical links · 1 source-reported links

Mapping establishedEvidence supported

vendor-01299a5a765aea70faa05f2d06e0c26a5d498fd34553e868d89e8a43b31864db · product-3d00d4529178d601084d33646b52c0c928dc3368b5602bfe0c34e5d4087ac5da

Source class
Nvd cpe vulnerable target
Assertions
4
Mapping revision
cpe23-exact-mapping-v1
Observed cutoff
Aug 27, 2026
Retained assertion IDs
15f46384-d652-464a-bdac-228cfa361f153db18a8a-b442-4eff-8107-d10f0bed73264e231f4e-8610-4466-97c8-739d88cba5aea488d286-3738-4ff8-8b21-433481982606
Source-reported scopeSource-reported scope

Canonical linkage remains open; the cited source assertion is retained below.

Vendor specified only by source · Product specified only by source

Source class
Direct cve affected
Assertions
1
Mapping revision
cpe23-exact-mapping-v1
Observed cutoff
Aug 27, 2026
Retained assertion IDs
93099164-0958-43fd-9104-d4485286695b

Assessments

CVSS by origin

8.8
NVDCVSS 3.1 · role Primary · priority eligiblevalid_matchCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
9.3
NVDCVSS 2.0 · role Primary · priority eligiblevalid_matchAV:N/AC:M/Au:N/C:C/I:C/A:C
8.8
CVE Program sourceCVSS 3.1 · role Secondary · priority eligiblevalid_matchCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
8.8
CISA-ADPCVSS 3.1 · role unknown · display onlyDirect record assessment retained outside normalized eligibilityCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Direct CVE/CNA normalized decisions

8.8Priority eligible

CISA-ADP

CVSS 3.1 · Secondary · Independent enrichment · rank 2

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Validation
Valid match
Recomputed
8.8
Decision reason
Evidence supported
Policy
casca-direct-cvss-eligibility-v1

Assessments are retained side by side under closed precedence. Cascade never averages CVSS.

Evidence boundaries

  • KEV membership is authoritative for the catalog, not proof of exposure in any environment.
  • EPSS is a dated model probability and not an individual-environment prediction.
  • Affected or fixed status applies only to the exact cited product and version scope; remaining scope stays source-scoped.
  • NVD-carried upstream facts remain derivative; independent corroboration requires a separately authored source.
  • Only NVD metrics validated under the generation-bound calculator are Public Priority eligible; direct CVE record metrics remain display-only.
  • NVD CVSS source eligibility is closed: NVD-authored, exact record-source, or registered same-CVE container origin; unmapped sources remain display-only.
  • Core replay supports the active and immediately prior generation; retrospective valid-at replay is deferred.
  • OSV aggregation and OSV-converted NVD material are not independent corroboration.
  • Red Hat facts are vendor assertions for the exact supplied products.
  • Nonmembership and not-yet-observed states are not proof of safety.