CASCACascade Atlas

Evidence dossier

CVE-2013-2423

Unspecified vulnerability in the Java Runtime Environment (JRE) component in Oracle Java SE 7 Update 17 and earlier, and OpenJDK 7, allows remote attackers to affect integrity…

Exploited in the wild (CISA KEV since May 25, 2022). NVD reports CVSS 2.0 4.3. EPSS estimates 85.3% exploit likelihood as of Aug 26, 2026.

74.5–75.4Priority evidence range
Evidence current through Aug 27, 2026, 6:09 PM UTC

As of Aug 27, 2026

Normalized restatement

Unspecified vulnerability in the Java Runtime Environment (JRE) component in Oracle Java SE 7 Update 17 and earlier, and OpenJDK 7, allows remote attackers to affect integrity via unknown vectors related to HotSpot. NOTE: the previous information is from the April 2013 CPU. Oracle has not commented on claims from the original researcher that this vulnerability allows remote attackers to bypass permission checks by the MethodHandles method and modify arbitrary public final fields using reflection and type confusion, as demonstrated using integer and double fields to disable the security manager.

State
PUBLISHED
Published
Apr 17, 2013
Updated
Oct 22, 2025
Evidence coverage
99%

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
    oracle

    Record text: Unspecified vulnerability in the Java Runtime Environment (JRE) component in Oracle Java SE 7 Update 17 and earlier, and OpenJDK 7, allows remote attackers to affect integrity via unknown vectors related to HotSpot. NOTE: the previous information is from the April 2013 CPU. Oracle has not commented on claims from the original researcher that this vulnerability allows remote attackers to bypass permission checks by the MethodHandles method and modify arbitrary public final fields using reflection and type confusion, as demonstrated using integer and double fields to disable the security manager.

    Inspect raw assertion
    Field
    container
    Value
    Unspecified vulnerability in the Java Runtime Environment (JRE) component in Oracle Java SE 7 Update 17 and earlier, and OpenJDK 7, allows remote attackers to affect integrity via unknown vectors related to HotSpot. NOTE: the previous information is from the April 2013 CPU. Oracle has not commented on claims from the original researcher that this vulnerability allows remote attackers to bypass permission checks by the MethodHandles method and modify arbitrary public final fields using reflection and type confusion, as demonstrated using integer and double fields to disable the security manager.
    Original evidence ↗
  4. Source dateFirst observed by CASCA
    CISA KEV

    Exploitation cataloged: Oracle JRE Unspecified Vulnerability

    Inspect raw assertion
    Field
    observed_exploitation
    Value
    Oracle JRE Unspecified Vulnerability
    Original evidence ↗
  5. Source dateFirst observed by CASCA
    FIRST EPSS

    EPSS score: 85.33% probability · 99.7th percentile

    Inspect raw assertion
    Field
    model_probability
    Value
    Probability 0.853330000000; percentile 0.997000000000
    Original evidence ↗
ExploitationCatalog member

CISA KEV · catalog date May 25, 2022 · first observed Jul 19, 2026

Exploit likelihood85.33%

FIRST EPSS · score date Aug 26, 2026 · 99.7th percentile · first observed Aug 26, 2026

SeverityCVSS 4.3

NVD · CVSS 2.0 · 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 ↗
oracleOriginal assertion
Record text

Unspecified vulnerability in the Java Runtime Environment (JRE) component in Oracle Java SE 7 Update 17 and earlier, and OpenJDK 7, allows remote attackers to affect integrity via unknown vectors related to HotSpot. NOTE: the previous information is from the April 2013 CPU. Oracle has not commented on claims from the original researcher that this vulnerability allows remote attackers to bypass permission checks by the MethodHandles method and modify arbitrary public final fields using reflection and type confusion, as demonstrated using integer and double fields to disable the security manager.

Inspect raw assertion
Field
container
Value
Unspecified vulnerability in the Java Runtime Environment (JRE) component in Oracle Java SE 7 Update 17 and earlier, and OpenJDK 7, allows remote attackers to affect integrity via unknown vectors related to HotSpot. NOTE: the previous information is from the April 2013 CPU. Oracle has not commented on claims from the original researcher that this vulnerability allows remote attackers to bypass permission checks by the MethodHandles method and modify arbitrary public final fields using reflection and type confusion, as demonstrated using integer and double fields to disable the security manager.
Source dateSource date omittedFirst observed by CASCAOriginal evidence ↗
CISA KEVOriginal assertion
Exploitation cataloged

Oracle JRE Unspecified Vulnerability

Inspect raw assertion
Field
observed_exploitation
Value
Oracle JRE Unspecified Vulnerability
Source dateFirst observed by CASCAOriginal evidence ↗
FIRST EPSSOriginal assertion
EPSS score

85.33% probability · 99.7th percentile

Inspect raw assertion
Field
model_probability
Value
Probability 0.853330000000; percentile 0.997000000000
Source dateFirst observed by CASCAOriginal evidence ↗

Applicability

Cited product scope

Trace impact →
15Underlying assertions
3Canonical products
15Target assertions
0Constraint assertions

Grouped from 2 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

4 scope groups

oracle · 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 · OPERATING SYSTEMcanonicalubuntu_linuxVulnerable target · 1 assertions
Version 12.10Canonical identity product-a18840e4673d48e569064752e9575849e99b3f173c63d7c965c4c193bcaebef2Linked exact
Scope supported
Inspect raw assertion
  1. cpe:2.3:o:canonical:ubuntu_linux:12.10:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Vulnerable target
    Configuration
    1 · node/0 · match 0
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    e2076871-2e80-4605-a470-a41c1a8ec7ee
NVD CPE · OPERATING SYSTEMopensuseopensuseVulnerable target · 1 assertions
Version 12.3Canonical identity product-66ca8198d1887ac9754d1aad85d76f1edfc54c873eb2cd9bedf566863f5e07bdLinked exact
Scope supported
Inspect raw assertion
  1. cpe:2.3:o:opensuse:opensuse:12.3:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Vulnerable target
    Configuration
    1 · node/0 · match 1
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    dfbf430b-0832-44b0-aa0e-ba9e467f7668
NVD CPE · APPLICATIONoraclejreVulnerable target · 13 assertions
Version 1.7.0Canonical identity product-70c0761d49c3bbe44615490ef7b613557bcd3ccdfa71d09d74202c114d277fb7Linked exact
Scope supported
Inspect raw assertions
  1. cpe:2.3:a:oracle:jre:1.7.0:update4:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Vulnerable target
    Configuration
    0 · node/0 · match 8
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    eeb101c9-ca38-4421-bc0c-c1ad47aa2cc9
  2. cpe:2.3:a:oracle:jre:1.7.0:update11:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Vulnerable target
    Configuration
    0 · node/0 · match 3
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    b2b20041-eb5d-4fa4-ac7d-c35e7878bcfd
  3. cpe:2.3:a:oracle:jre:1.7.0:update3:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Vulnerable target
    Configuration
    0 · node/0 · match 7
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    5831d70b-3854-4cb8-b88d-40f1743daee0
  4. cpe:2.3:a:oracle:jre:1.7.0:update1:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Vulnerable target
    Configuration
    0 · node/0 · match 1
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    f4b153fd-e20b-4909-8b10-884e48f5b590
  5. cpe:2.3:a:oracle:jre:1.7.0:-:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Vulnerable target
    Configuration
    0 · node/0 · match 0
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    dfaa351a-93cd-46a8-a480-ce2783ccd620
  6. cpe:2.3:a:oracle:jre:1.7.0:update10:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Vulnerable target
    Configuration
    0 · node/0 · match 2
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    f21933fb-a27c-4af3-9811-2de28484a5a6
  7. cpe:2.3:a:oracle:jre:1.7.0:update6:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Vulnerable target
    Configuration
    0 · node/0 · match 10
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    f9a8ebcb-5e6a-42f0-8d07-f3a3d1c850f0
  8. cpe:2.3:a:oracle:jre:1.7.0:update13:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Vulnerable target
    Configuration
    0 · node/0 · match 4
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    f3c3c9c7-73ae-4b1d-aa85-c7f5330a4de6
  9. cpe:2.3:a:oracle:jre:1.7.0:update15:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Vulnerable target
    Configuration
    0 · node/0 · match 5
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    1d8bb8d7-d5ec-42d6-beaa-cb03d1d6513e
  10. cpe:2.3:a:oracle:jre:1.7.0:update7:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Vulnerable target
    Configuration
    0 · node/0 · match 11
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    0cd8a54e-185b-4d34-82ef-c0c05739ec12
  11. cpe:2.3:a:oracle:jre:1.7.0:update2:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Vulnerable target
    Configuration
    0 · node/0 · match 6
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    cb106fa9-26ce-48c5-aea5-fd1a5454aee2
  12. cpe:2.3:a:oracle:jre:1.7.0:update5:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Vulnerable target
    Configuration
    0 · node/0 · match 9
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    ba302df3-abbb-4262-b206-4c0f7b5b1e91
  13. cpe:2.3:a:oracle:jre:1.7.0:update9:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Vulnerable target
    Configuration
    0 · node/0 · match 12
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    4ffc7f0d-1f32-4235-8359-277ce41382df

Affected-product evidence

Accepted scope and product mapping

3 canonical links · 1 source-reported links

Mapping establishedEvidence supported

vendor-f98e1750e4b030e2bb71130d14421ff255427227a8b696c92978cf6c77fc265d · product-66ca8198d1887ac9754d1aad85d76f1edfc54c873eb2cd9bedf566863f5e07bd

Source class
Nvd cpe vulnerable target
Assertions
1
Mapping revision
cpe23-exact-mapping-v1
Observed cutoff
Aug 27, 2026
Retained assertion IDs
1991fc08-76cd-4b01-8716-78e32472320c
Mapping establishedEvidence supported

vendor-b1377626da187dbea1eeb98f365c57a3dcbeccfdc2a7d3471e94ece7b6f88e55 · product-70c0761d49c3bbe44615490ef7b613557bcd3ccdfa71d09d74202c114d277fb7

Source class
Nvd cpe vulnerable target
Assertions
13
Mapping revision
cpe23-exact-mapping-v1
Observed cutoff
Aug 27, 2026
Retained assertion IDs
0d90b441-d606-4c04-81dd-ae0762fdbac01a7e64df-f4a9-4d8b-93e5-77bf5fff8ce41b0ff6df-3339-481e-9b1d-8fa46243309021cbe6d4-c3ba-4966-bc9a-56418b87325d28710e55-4c48-470e-bcc0-d04d58e05ebe29f1f9c9-0791-4b88-81de-a2abe1e4221a376b028a-8cbd-4d10-8a74-03d923300ca237ed918a-ddd9-4f77-834c-5932fd8cc8b46e461888-2d09-454e-93e1-3af1e6783b8483c84f1a-765a-4f9e-afe6-e0f8d6263e10a1436d8a-bff0-414e-abc8-4281c35f0318b1eb4c6a-dec2-4d7a-9a81-b83cc2fe57bde1b0d95c-7491-4019-87c8-b63b673c76d6
Mapping establishedEvidence supported

vendor-c57a6167e95991f72f9616ac32b40463ac13c5f4929fcce3efc058b09a445b54 · product-a18840e4673d48e569064752e9575849e99b3f173c63d7c965c4c193bcaebef2

Source class
Nvd cpe vulnerable target
Assertions
1
Mapping revision
cpe23-exact-mapping-v1
Observed cutoff
Aug 27, 2026
Retained assertion IDs
437d0839-f8a7-4768-a081-598cb8bef291
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
4ad3c06d-69d1-4818-8128-aaa57cdf28bb

Assessments

CVSS by origin

4.3
NVDCVSS 2.0 · role Primary · priority eligiblevalid_matchAV:N/AC:M/Au:N/C:N/I:P/A:N
3.7
CVE Program sourceCVSS 3.1 · role Secondary · priority eligiblevalid_matchCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N
3.7
CISA-ADPCVSS 3.1 · role unknown · display onlyDirect record assessment retained outside normalized eligibilityCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N

Direct CVE/CNA normalized decisions

3.7Priority eligible

CISA-ADP

CVSS 3.1 · Secondary · Independent enrichment · rank 2

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N
Validation
Valid match
Recomputed
3.7
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.