CASCACascade Atlas

Evidence dossier

CVE-2026-76461

Cisco Secure Email Gateway SQL Injection Vulnerability

Exploited in the wild (CISA KEV since Sep 14, 2026). cisco reports CVSS 3.1 9.8. EPSS estimates 29.5% exploit likelihood as of Oct 22, 2026.

75.4–81.5Priority evidence range
Evidence through Oct 22, 2026, 6:07 PM UTC

As of Oct 22, 2026

Normalized restatement

A vulnerability in the email parsing of Cisco AsyncOS Software for Cisco Secure Email Gateway could allow an unauthenticated, remote attacker to execute arbitrary commands with root privileges on the underlying operating system. This vulnerability is due to insufficient validation in the email parsing logic. An attacker could exploit this vulnerability by sending a crafted email message that contains malicious SQL statements through an affected device. A successful exploit could allow the attacker to execute arbitrary SQL statements, leading to command execution with root privileges on the underlying operating system.

State
PUBLISHED
Published
Sep 14, 2026
Updated
Sep 18, 2026
Evidence coverage
85%

Evidence chronology

What was known when

Download this view's receipt →
  1. Source dateFirst observed by CASCA
    CISA KEV

    Exploitation cataloged: Cisco Secure Email Gateway SQL Injection Vulnerability

    Inspect raw assertion
    Field
    observed_exploitation
    Value
    Cisco Secure Email Gateway SQL Injection Vulnerability
    Original evidence ↗
  2. 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 ↗
  3. Source dateSource date omittedFirst observed by CASCA
    cisco

    Record text: Cisco Secure Email Gateway SQL Injection Vulnerability

    Inspect raw assertion
    Field
    container
    Value
    Cisco Secure Email Gateway SQL Injection Vulnerability
    Original evidence ↗
  4. Source dateFirst observed by CASCA
    FIRST EPSS

    EPSS score: 29.54% probability · 98.19th percentile

    Inspect raw assertion
    Field
    model_probability
    Value
    Probability 0.295430000000; percentile 0.981890000000
    Original evidence ↗
ExploitationCatalog member

CISA KEV · catalog date Sep 14, 2026 · first observed Sep 14, 2026

Exploit likelihood29.54%

FIRST EPSS · score date Oct 22, 2026 · 98.2th percentile · first observed Oct 22, 2026

SeverityCVSS 9.8

cisco · CVSS 3.1 · first observed Sep 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 statusLast verified source snapshot retained

The last verified source boundary remains in force for this claim.

Revision
evidence-policy-v1.1.0
Cutoff
Oct 22, 2026
Resolution
Review source contract
Exploit likelihoodEvidence supported

Eligible evidence is present for this bounded claim.

Revision
evidence-policy-v1.1.0
Cutoff
Oct 22, 2026
Resolution
None
Severity assessmentEvidence supported

Eligible evidence is present for this bounded claim.

Revision
casca-direct-cvss-eligibility-v1
Cutoff
Oct 22, 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
Oct 22, 2026
Resolution
Resolve identity

Source comparison

Who said what

CISA KEVOriginal assertion
Exploitation cataloged

Cisco Secure Email Gateway SQL Injection Vulnerability

Inspect raw assertion
Field
observed_exploitation
Value
Cisco Secure Email Gateway SQL Injection Vulnerability
Source dateFirst observed by CASCAOriginal evidence ↗
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 ↗
ciscoOriginal assertion
Record text

Cisco Secure Email Gateway SQL Injection Vulnerability

Inspect raw assertion
Field
container
Value
Cisco Secure Email Gateway SQL Injection Vulnerability
Source dateSource date omittedFirst observed by CASCAOriginal evidence ↗
FIRST EPSSOriginal assertion
EPSS score

29.54% probability · 98.19th percentile

Inspect raw assertion
Field
model_probability
Value
Probability 0.295430000000; percentile 0.981890000000
Source dateFirst observed by CASCAOriginal evidence ↗

Applicability

Cited product scope

Trace impact →

10 scope groups

cisco · source assertedCiscoCisco Secure EmailDirect source scope
Affected: 14.0.0-698Affected: 13.5.1-277Affected: 13.0.0-392Affected: 14.2.0-620Affected: 13.0.5-007Affected: 13.5.4-038Affected: 14.2.1-020Affected: 14.3.0-032Affected: 15.0.0-104Affected: 15.0.1-030Affected: 15.5.0-048Affected: 15.5.1-055Affected: 15.5.2-018Affected: 16.0.0-050Affected: 15.0.3-002Affected: 16.0.0-054Affected: 15.5.3-022Affected: 16.0.1-017Affected: 15.5.4-012Affected: 16.0.4-016Affected: 15.0.5-016Affected: 16.0.2-112Affected: 16.0.3-044
Source-reported scope

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

Inspect raw assertion[{"status": "affected", "version": "14.0.0-698"}, {"status": "affected", "version": "13.5.1-277"}, {"status": "affected", "version": "13.0.0-392"}, {"status": "affected", "version": "14.2.0-620"}, {"status": "affected", "version": "13.0.5-007"}, {"status": "affected", "version": "13.5.4-038"}, {"status": "affected", "version": "14.2.1-020"}, {"status": "affected", "version": "14.3.0-032"}, {"status": "affected", "version": "15.0.0-104"}, {"status": "affected", "version": "15.0.1-030"}, {"status": "affected", "version": "15.5.0-048"}, {"status": "affected", "version": "15.5.1-055"}, {"status": "affected", "version": "15.5.2-018"}, {"status": "affected", "version": "16.0.0-050"}, {"status": "affected", "version": "15.0.3-002"}, {"status": "affected", "version": "16.0.0-054"}, {"status": "affected", "version": "15.5.3-022"}, {"status": "affected", "version": "16.0.1-017"}, {"status": "affected", "version": "15.5.4-012"}, {"status": "affected", "version": "16.0.4-016"}, {"status": "affected", "version": "15.0.5-016"}, {"status": "affected", "version": "16.0.2-112"}, {"status": "affected", "version": "16.0.3-044"}]
NVD · source assertedVendor unspecified by sourceProduct unspecified by sourceDirect source scope
Version bounds not stated
Scope constrained
Inspect raw assertioncpe:2.3:a:cisco:secure_email_gateway_virtual_appliance_c100v:-:*:*:*:*:*:*:*
NVD · source assertedVendor unspecified by sourceProduct unspecified by sourceDirect source scope
Version bounds not stated
Scope constrained
Inspect raw assertioncpe:2.3:a:cisco:secure_email_gateway_virtual_appliance_c300v:-:*:*:*:*:*:*:*
NVD · source assertedVendor unspecified by sourceProduct unspecified by sourceDirect source scope
Version bounds not stated
Scope constrained
Inspect raw assertioncpe:2.3:a:cisco:secure_email_gateway_virtual_appliance_c600v:-:*:*:*:*:*:*:*
NVD · source assertedVendor unspecified by sourceProduct unspecified by sourceDirect source scope
Version bounds not stated
Scope constrained
Inspect raw assertioncpe:2.3:h:cisco:secure_email_gateway_c195:-:*:*:*:*:*:*:*
NVD · source assertedVendor unspecified by sourceProduct unspecified by sourceDirect source scope
Version bounds not stated
Scope constrained
Inspect raw assertioncpe:2.3:h:cisco:secure_email_gateway_c395:-:*:*:*:*:*:*:*
NVD · source assertedVendor unspecified by sourceProduct unspecified by sourceDirect source scope
Version bounds not stated
Scope constrained
Inspect raw assertioncpe:2.3:h:cisco:secure_email_gateway_c695:-:*:*:*:*:*:*:*
NVD · source assertedVendor unspecified by sourceProduct unspecified by sourceDirect source scope
Version bounds not stated
Scope supported
Inspect raw assertioncpe:2.3:o:cisco:asyncos:*:*:*:*:*:*:*:*; end excluding 15.5.5-014
NVD · source assertedVendor unspecified by sourceProduct unspecified by sourceDirect source scope
Version bounds not stated
Scope supported
Inspect raw assertioncpe:2.3:o:cisco:asyncos:*:*:*:*:*:*:*:*; start including 16.0; end excluding 16.0.4-302
NVD · source assertedVendor unspecified by sourceProduct unspecified by sourceDirect source scope
Version bounds not stated
Scope supported
Inspect raw assertioncpe:2.3:o:cisco:asyncos:*:*:*:*:*:*:*:*; start including 16.5; end excluding 16.5.0-780

Affected-product evidence

Accepted scope and product mapping

0 canonical links · 2 source-reported links

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
Oct 22, 2026
Retained assertion IDs
723d11bc-2b3e-4046-b3d8-9365bd538ded
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
Nvd cpe vulnerable target
Assertions
3
Mapping revision
cpe23-exact-mapping-v1
Observed cutoff
Oct 22, 2026
Retained assertion IDs
4e4a6d92-89d7-4cd1-9e80-2afab271a09df6ac61d8-33b1-4435-bb90-0cc514fa4c0cfb220915-145c-4c5f-ac9d-78e3b9dd0e9d

Assessments

CVSS by origin

9.8
psirt@cisco.comCVSS 3.1 · role Secondary · priority eligiblevalid_matchCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
9.8
ciscoCVSS 3.1 · role unknown · display onlyDirect record assessment retained outside normalized eligibilityCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Direct CVE/CNA normalized decisions

9.8Priority eligible

cisco

CVSS 3.1 · Primary · Original assertion · rank 1

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Validation
Valid match
Recomputed
9.8
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.