Cisco Secure Email Gateway SQL Injection Vulnerability
Summary
| CVE | CVE-2026-76461 |
|---|---|
| State | PUBLISHED |
| Assigner | cisco |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2026-09-14 17:17:51 UTC |
| Updated | 2026-09-15 12:47:32 UTC |
| Description | 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. |
Risk And Classification
Primary CVSS: v3.1 9.8 CRITICAL from [email protected]
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS: 0.282690000 probability, percentile 0.980760000 (date 2026-10-07)
CISA KEV: Listed on 2026-09-14; due 2026-09-17; ransomware use Unknown
Problem Types: CWE-89 | CWE-89 Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')
| Version | Source | Type | Score | Severity | Vector |
|---|---|---|---|---|---|
| 3.1 | [email protected] | Secondary | 9.8 | CRITICAL | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| 3.1 | CNA | CVSSV3_1 | 9.8 | CRITICAL | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
CVSS v3.1 Breakdown
Attack Vector
NetworkAttack Complexity
LowPrivileges Required
NoneUser Interaction
NoneScope
UnchangedConfidentiality
HighIntegrity
HighAvailability
HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CISA Known Exploited Vulnerability
| Vendor | Cisco |
|---|---|
| Product | Secure Email Gateway |
| Name | Cisco Secure Email Gateway SQL Injection Vulnerability |
| Required Action | Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines. |
| Notes | https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-esa-inj-2bLVGmhX ; BOD 26-04: https://www.cisa.gov/news-events/directives/bod-26-04-prioritizing-security-updates-based-risk ; Forensics Triage Requirements: https://www.cisa.gov/news-events/directives/bod-26-04-implementation-guidance-prioritizing-security-updates-based-risk ; https://nvd.nist.gov/vuln/detail/CVE-2026-76461 |
NVD Known Affected Configurations (CPE 2.3)
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | Cisco | Cisco Secure Email | affected 14.0.0-698 | Not specified |
| CNA | Cisco | Cisco Secure Email | affected 13.5.1-277 | Not specified |
| CNA | Cisco | Cisco Secure Email | affected 13.0.0-392 | Not specified |
| CNA | Cisco | Cisco Secure Email | affected 14.2.0-620 | Not specified |
| CNA | Cisco | Cisco Secure Email | affected 13.0.5-007 | Not specified |
| CNA | Cisco | Cisco Secure Email | affected 13.5.4-038 | Not specified |
| CNA | Cisco | Cisco Secure Email | affected 14.2.1-020 | Not specified |
| CNA | Cisco | Cisco Secure Email | affected 14.3.0-032 | Not specified |
| CNA | Cisco | Cisco Secure Email | affected 15.0.0-104 | Not specified |
| CNA | Cisco | Cisco Secure Email | affected 15.0.1-030 | Not specified |
| CNA | Cisco | Cisco Secure Email | affected 15.5.0-048 | Not specified |
| CNA | Cisco | Cisco Secure Email | affected 15.5.1-055 | Not specified |
| CNA | Cisco | Cisco Secure Email | affected 15.5.2-018 | Not specified |
| CNA | Cisco | Cisco Secure Email | affected 16.0.0-050 | Not specified |
| CNA | Cisco | Cisco Secure Email | affected 15.0.3-002 | Not specified |
| CNA | Cisco | Cisco Secure Email | affected 16.0.0-054 | Not specified |
| CNA | Cisco | Cisco Secure Email | affected 15.5.3-022 | Not specified |
| CNA | Cisco | Cisco Secure Email | affected 16.0.1-017 | Not specified |
| CNA | Cisco | Cisco Secure Email | affected 15.5.4-012 | Not specified |
| CNA | Cisco | Cisco Secure Email | affected 16.0.4-016 | Not specified |
| CNA | Cisco | Cisco Secure Email | affected 15.0.5-016 | Not specified |
| CNA | Cisco | Cisco Secure Email | affected 16.0.2-112 | Not specified |
| CNA | Cisco | Cisco Secure Email | affected 16.0.3-044 | Not specified |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-esa-in... | [email protected] | sec.cloudapps.cisco.com | Vendor Advisory |
| www.cisa.gov/known-exploited-vulnerabilities-catalog | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | www.cisa.gov | US Government Resource |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
| CISA Known Exploited Vulnerabilities catalog | CISA | www.cisa.gov | kev |
No vendor comments have been submitted for this CVE.
Additional Advisory Data
| Source | Time | Event |
|---|---|---|
| ADP | 2026-09-14T00:00:00.000Z | CVE-2026-76461 added to CISA KEV |
Exploits
CNA: In September 2026, the Cisco PSIRT became aware of active exploitation of this vulnerability.
There are currently no legacy QID mappings associated with this CVE.