Skip to main content
VulnerabilityPublished

CVE-2026-76461: Cisco Secure Email Gateway · SQL Injection

Affects Cisco Secure Email GatewaySource GCVE Database

0
Compare
Authoritative record:CVE-2026-76461· Critical 9.8

Exploited in the wild · KEV due 17 Sep 2026 · 29% EPSS : apply the vendor's fix or mitigations to Cisco Secure Email Gateway now.

Data as of 29 Oct 2026, 19:04 UTC

CVSS 3.1 base score
9.8Critical
How severe the flaw is on the 0–10 CVSS scale.
KEV deadline
 US federal agencies must patch by this date; a sensible deadline for everyone else. Other KEV due dates
EPSS
29.5% chance of exploitation in 30 days – higher than 98% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Exploitation evidence

t = 0 is the CVE’s publication on cve.org

  1. Disclosed: evidence found.

    CVE published 14 Sep 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: evidence found.

    Listed in CISA KEV the same day as disclosure

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

Timeline

  1. CVE ID reserved

    by Cisco Systems, Inc.

    , 26 days before disclosure

  2. CVE published

    on cve.org

    , t = 0

  3. In Threat Radar

    record ingested

    , 10 minutes after disclosure

  4. , the same day as disclosure

  5. KEV remediation due

    US federal deadline

    , 3 days after disclosure

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), CISA KEV (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 29 Oct 2026.

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.

Affected software

ProductAffectedFixed in
CiscoCisco Secure EmailAffected
  • 13.0.0-392 – 16.0.4-016
23 affected builds
Fixed in–

Check the firmware or software version for Cisco Secure Email Gateway in the device's admin interface against the vendor advisory.

Description

CVE-2026-76461 is a critical vulnerability in Cisco AsyncOS Software for Cisco Secure Email Gateway. It arises from insufficient validation in the email parsing logic, allowing an unauthenticated remote attacker to send crafted emails containing malicious SQL statements. Successful exploitation can lead to arbitrary command execution with root privileges on the underlying operating system.

References

Community reviews

Loading reviews…