CVE-2026-76461KEV · OVERDUECWE-89sql-injection

Cisco Secure Email Gateway SQL Injection Vulnerability

Critical · published September 14, 2026

Patch now

Confirmed exploited, and the score agrees

CVSS calls it critical at 9.8. It is confirmed in active exploitation. It sits in the 98.2th percentile for exploit probability.

38
days past CISA
deadline
CVSS v3.1
9.8
EPSS
30%
Percentile
98.2
In the wild
Confirmed
What it is

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.

The record
Technical detail
CVSS v3.1
9.8 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.29543 · 98.2th percentile
Weakness
CWE-89 · Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')
Published
2026-09-14T21:17Z
KEV added
2026-09-14 · due 2026-09-17
Affected products (3)
ProductVersionsFixed in
cisco/asyncos< 15.5.5-01415.5.5-014
cisco/asyncos≥ 16.0, < 16.0.4-30216.0.4-302
cisco/asyncos≥ 16.5, < 16.5.0-78016.5.0-780
References (2)
EPSS history
Timeline
  • 27 SEP 03:27Z
    EPSS moved 2% → 28%
    epss
  • 26 SEP 03:26Z
    EPSS moved 2% → 28%
    epss
  • 17 SEP 03:32Z
    EPSS moved — → 2%
    epss
  • 14 SEP 16:09Z
    Cisco Secure Email Gateway SQL Injection Vulnerability
    cvelistv5