CASCACascade Atlas

Evidence dossier

CVE-2020-8260

A vulnerability in the Pulse Connect Secure < 9.1R9 admin web interface could allow an authenticated attacker to perform an arbitrary code execution using uncontrolled gzip…

Exploited in the wild (CISA KEV since Nov 3, 2021). NVD reports CVSS 3.1 7.2. EPSS estimates 96.5% exploit likelihood as of Aug 27, 2026.

80.3–81.8Priority evidence range
Evidence current through Aug 27, 2026, 6:09 PM UTC

As of Aug 27, 2026

Normalized restatement

A vulnerability in the Pulse Connect Secure < 9.1R9 admin web interface could allow an authenticated attacker to perform an arbitrary code execution using uncontrolled gzip extraction.

State
PUBLISHED
Published
Oct 28, 2020
Updated
Oct 21, 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
    hackerone

    Record text: A vulnerability in the Pulse Connect Secure < 9.1R9 admin web interface could allow an authenticated attacker to perform an arbitrary code execution using uncontrolled gzip extraction.

    Inspect raw assertion
    Field
    container
    Value
    A vulnerability in the Pulse Connect Secure < 9.1R9 admin web interface could allow an authenticated attacker to perform an arbitrary code execution using uncontrolled gzip extraction.
    Original evidence ↗
  4. Source dateFirst observed by CASCA
    CISA KEV

    Exploitation cataloged: Ivanti Pulse Connect Secure Code Execution Vulnerability

    Inspect raw assertion
    Field
    observed_exploitation
    Value
    Ivanti Pulse Connect Secure Code Execution Vulnerability
    Original evidence ↗
  5. Source dateFirst observed by CASCA
    FIRST EPSS

    EPSS score: 96.48% probability · 99.88th percentile

    Inspect raw assertion
    Field
    model_probability
    Value
    Probability 0.964800000000; percentile 0.998770000000
    Original evidence ↗
ExploitationCatalog member

CISA KEV · catalog date Nov 3, 2021 · first observed Jul 19, 2026

Exploit likelihood96.48%

FIRST EPSS · score date Aug 27, 2026 · 99.9th percentile · first observed Aug 27, 2026

SeverityCVSS 7.2

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 ↗
hackeroneOriginal assertion
Record text

A vulnerability in the Pulse Connect Secure < 9.1R9 admin web interface could allow an authenticated attacker to perform an arbitrary code execution using uncontrolled gzip extraction.

Inspect raw assertion
Field
container
Value
A vulnerability in the Pulse Connect Secure < 9.1R9 admin web interface could allow an authenticated attacker to perform an arbitrary code execution using uncontrolled gzip extraction.
Source dateSource date omittedFirst observed by CASCAOriginal evidence ↗
CISA KEVOriginal assertion
Exploitation cataloged

Ivanti Pulse Connect Secure Code Execution Vulnerability

Inspect raw assertion
Field
observed_exploitation
Value
Ivanti Pulse Connect Secure Code Execution Vulnerability
Source dateFirst observed by CASCAOriginal evidence ↗
FIRST EPSSOriginal assertion
EPSS score

96.48% probability · 99.88th percentile

Inspect raw assertion
Field
model_probability
Value
Probability 0.964800000000; percentile 0.998770000000
Source dateFirst observed by CASCAOriginal evidence ↗

Applicability

Cited product scope

Trace impact →
16Underlying assertions
1Canonical products
16Target assertions
0Constraint assertions

Grouped from 1 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

2 scope groups

hackerone · source assertedn/aPulse Connect Secure / Pulse Policy SecureDirect source scope
Affected: 9.1R9
Source-reported scope

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

Inspect raw assertion[{"status": "affected", "version": "9.1R9"}]
NVD CPE · APPLICATIONivanticonnect_secureVulnerable target · 16 assertions
Any version (unconstrained) (<= 9.0); Version 9.1Canonical identity product-0675def37879dcf14a27022586db7f5234f5d2c3f293e3a70a47a5da19da3b1bLinked exact
Scope supported
Inspect raw assertions
  1. cpe:2.3:a:ivanti:connect_secure:9.1:r4.1:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Vulnerable target
    Configuration
    0 · node/0 · match 6
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    d5355372-03ea-46d7-9104-a2785c29b664
  2. cpe:2.3:a:ivanti:connect_secure:9.1:r4.3:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Vulnerable target
    Configuration
    0 · node/0 · match 8
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    0349a0cc-a372-4e51-899e-d7ba67876f4b
  3. cpe:2.3:a:ivanti:connect_secure:9.1:r8.0:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Vulnerable target
    Configuration
    0 · node/0 · match 12
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    4d6ceccb-18ba-4219-95a2-2525a2bdce36
  4. cpe:2.3:a:ivanti:connect_secure:9.1:r1.0:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Vulnerable target
    Configuration
    0 · node/0 · match 2
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    130c8955-bda4-4518-8eba-740eb08fc3e4
  5. cpe:2.3:a:ivanti:connect_secure:9.1:r8.1:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Vulnerable target
    Configuration
    0 · node/0 · match 13
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    bffa0b02-7f6d-4434-b1e7-eb8520fd68a0
  6. cpe:2.3:a:ivanti:connect_secure:*:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Vulnerable target
    Configuration
    0 · node/0 · match 0
    Logic
    OR
    Version bounds
    through including 9.0
    Match ID
    87fbc6ad-0a70-4626-a152-e49becf9f7af
  7. cpe:2.3:a:ivanti:connect_secure:9.1:r2.0:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Vulnerable target
    Configuration
    0 · node/0 · match 3
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    4e2d041d-9bdd-416d-b658-1c517c854104
  8. cpe:2.3:a:ivanti:connect_secure:9.1:r4.2:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Vulnerable target
    Configuration
    0 · node/0 · match 7
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    3de32a0c-8944-4f51-a286-266055ca4b2f
  9. cpe:2.3:a:ivanti:connect_secure:9.1:r8.2:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Vulnerable target
    Configuration
    0 · node/0 · match 14
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    dfe8fa87-9622-4d5b-99c7-d8ee230c0aa9
  10. cpe:2.3:a:ivanti:connect_secure:9.1:r5.0:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Vulnerable target
    Configuration
    0 · node/0 · match 9
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    f49ee829-a2cd-491e-bfc3-7888491d7c58
  11. cpe:2.3:a:ivanti:connect_secure:9.1:r7.0:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Vulnerable target
    Configuration
    0 · node/0 · match 11
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    b8ea4da8-cd09-41ac-adcb-27cf771c016b
  12. cpe:2.3:a:ivanti:connect_secure:9.1:r4.0:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Vulnerable target
    Configuration
    0 · node/0 · match 5
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    25ee614a-5f32-4ca9-998a-4faf16dc100c
  13. cpe:2.3:a:ivanti:connect_secure:9.1:r3.0:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Vulnerable target
    Configuration
    0 · node/0 · match 4
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    7155eb34-e8e0-49af-bda2-fb4bfa44662e
  14. cpe:2.3:a:ivanti:connect_secure:9.1:r8.4:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Vulnerable target
    Configuration
    0 · node/0 · match 15
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    07ab853d-5a3f-4142-8417-1c9fb729a89e
  15. cpe:2.3:a:ivanti:connect_secure:9.1:-:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Vulnerable target
    Configuration
    0 · node/0 · match 1
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    4f450898-0b06-4073-9b76-bf22f68bd14f
  16. cpe:2.3:a:ivanti:connect_secure:9.1:r6.0:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Vulnerable target
    Configuration
    0 · node/0 · match 10
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    2254ddf1-7ff3-49e1-8826-91f49a6794f8

Affected-product evidence

Accepted scope and product mapping

1 canonical links · 1 source-reported links

Mapping establishedEvidence supported

vendor-3425119a96da358469a7b553eb78575943b212717ed69c8b19da50120e63cd05 · product-0675def37879dcf14a27022586db7f5234f5d2c3f293e3a70a47a5da19da3b1b

Source class
Nvd cpe vulnerable target
Assertions
16
Mapping revision
cpe23-exact-mapping-v1
Observed cutoff
Aug 27, 2026
Retained assertion IDs
1390e20f-3603-4a1b-b3f0-512ab5334bca2db87b73-e368-4bc7-9f21-dc3cad554dfc30486ed1-e04e-46f9-b5b4-e39c7708c85c37be0a5b-9a54-495d-aa71-a0bedca045a73ffcd1e3-cd25-45fd-b5eb-c324e92981fa4e0beb49-7d4e-4a29-bf70-f7927887f38565817a44-7c79-4cf7-abbd-d6b3712f398b734dc2fd-6dde-4f4b-97db-952b6ca64b057994f3c1-0ec3-4bd9-8107-19b30ca7f13a7c9f7bce-71c5-422d-b65c-6d9f77dfc6d28607ee13-62f9-435c-ac60-2c0ae9573a91a4faa13c-aee9-457d-82e8-4b3b7ed5ac76a7686544-16a7-4c6b-bc15-2e8e08028380b3d66c2d-db93-4db4-8812-c74c75b5f04bb6dadb62-f1b4-400b-a92c-b53711c0a804ff48725a-fbba-4c12-8620-47ec12b37bf3
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
749bbf0f-7244-43c0-b7c5-ecca1d5c045a

Assessments

CVSS by origin

7.2
NVDCVSS 3.1 · role Primary · priority eligiblevalid_matchCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
6.5
NVDCVSS 2.0 · role Primary · priority eligiblevalid_matchAV:N/AC:L/Au:S/C:P/I:P/A:P
7.2
CVE Program sourceCVSS 3.1 · role Secondary · priority eligiblevalid_matchCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
7.2
CISA-ADPCVSS 3.1 · role unknown · display onlyDirect record assessment retained outside normalized eligibilityCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Direct CVE/CNA normalized decisions

7.2Priority eligible

CISA-ADP

CVSS 3.1 · Secondary · Independent enrichment · rank 2

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Validation
Valid match
Recomputed
7.2
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.