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CVE-2026-76461

Cisco Secure Email Gateway SQL Injection Vulnerability

  • Critical 9.8
  • Exploited: added to CISA KEV 14 Sep 2026

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.

Key facts

Published
14 Sep 2026
Last changed
18 Sep 2026
Assigned by
cisco
KEV added
14 Sep 2026
KEV fix due
17 Sep 2026
EPSS
40.16% likely to be exploited in the next 30 days, higher than 98.66% of CVEs (scores for 15 Nov 2026)
SSVC (CISA)
Exploitation: active; Automatable: yes; Technical impact: total

Severity scores

Each score is shown as its source gave it. They are not averaged or merged.

  • 9.8CVSS 3.1, Criticalfrom the CNA (cisco)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

What to do

  • 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.CISA KEV required action

Historical context and remediation

This reference retains the original CVE publication date. A recent record update does not mean a new attack occurred.

No separately sourced impact summary is available on this page yet. Consult the description, version data and dated exploitation evidence.

Version statuses below come from the CNA. An “unaffected” version is not necessarily a currently supported release or proof of a patch date. EPSS is a dated risk estimate, not a count of historical attacks.

Read the original CVE record.

Affected products

VendorProductVersions
CiscoCisco Secure Email
  • Default status: unknown
  • 14.0.0-698 (affected)
  • 13.5.1-277 (affected)
  • 13.0.0-392 (affected)
  • 14.2.0-620 (affected)
  • 13.0.5-007 (affected)
  • 13.5.4-038 (affected)
  • 14.2.1-020 (affected)
  • 14.3.0-032 (affected)
  • 15.0.0-104 (affected)
  • 15.0.1-030 (affected)
  • 15.5.0-048 (affected)
  • 15.5.1-055 (affected)
  • 15.5.2-018 (affected)
  • 16.0.0-050 (affected)
  • 15.0.3-002 (affected)
  • 16.0.0-054 (affected)
  • 15.5.3-022 (affected)
  • 16.0.1-017 (affected)
  • 15.5.4-012 (affected)
  • 16.0.4-016 (affected)
  • 15.0.5-016 (affected)
  • 16.0.2-112 (affected)
  • 16.0.3-044 (affected)

Timeline

  1. 14 Sep 2026 CVE-2026-76461 added to CISA KEV
  2. 14 Sep 2026 Added to the CISA KEV catalogue
  3. 14 Sep 2026 Published

Weakness

Practice this bug class

HackZoneLabs has a hands-on lab on SQL injection (CWE-89).

Open the learning platform

References