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Fencer Vulns
critical 9.8

CVE-2026-76461 kev in the critical feed json

Cisco Secure Email Gateway SQL Injection Vulnerability

published 2026-09-14 56 d ago modified 2026-09-18 52 d ago also EUVD-2026-77625

cvss
9.8
version 3.1, CNA
cisa kev
Exploited
added 2026-09-14
epss
40.2%
EPSS 40.2% chance of exploitation in 30 days, percentile 98%
public exploits
1
Metasploit

Summary

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.

Patch / fix

cisa 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.

  • cisco asyncos 15.5.5-014, 16.0.4-302, 16.5.0-780

Timeline

  1. CISA SSVC: exploitation active
  2. First public exploit (Metasploit exploit/unix/smtp/cisco_secure_email_gateway_ecs_sqli_rce)
  3. Added to CISA KEV
  4. Published
  5. CISA patch deadline

Known exploited

Added
56 d ago
Patch by
2026-09-17 (53 d ago)
Ransomware
Not known
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.
Vendor, product
Cisco, Secure Email Gateway
CISA name
Cisco Secure Email Gateway SQL Injection Vulnerability

CISA SSVC

Exploitation
Active, exploited in the wild
Automatable
yes
Technical impact
total
Assessed
56 d ago

Exploit prediction

40.16% chance of exploitation in the next 30 days, higher than 98% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

CVSS scores

assigned by version score vector
CNA 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

  • Cisco Cisco Secure Email

Classification

Weakness
  • CWE-89 Improper Neutralization of Special Elements used in an SQL Command

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.