CVE-2026-76461: Cisco Secure Email Gateway · SQL Injection
Affects Cisco Secure Email GatewaySource GCVE Database
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 30 Oct 2026, 06:59 UTC
- 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:HExploitation evidence
t = 0 is the CVE’s publication on cve.org
Disclosed: evidence found.
CVE published 14 Sep 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: evidence found.
Listed in CISA KEV the same day as disclosure
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
Timeline
CVE ID reserved
by Cisco Systems, Inc.
, 26 days before disclosure
CVE published
on cve.org
, t = 0
In Threat Radar
record ingested
, 10 minutes after disclosure
Added to CISA KEV (opens in a new tab)
exploitation confirmed
, the same day as disclosure
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.
- sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-esa-inj-2bLVGmhX (opens in a new tab)
- cisa.gov/news-events/directives/bod-26-04-prioritizing-security-updates-based-risk (opens in a new tab)
- cisa.gov/news-events/directives/bod-26-04-implementation-guidance-prioritizing-security-updates-based-risk (opens in a new tab)
- nvd.nist.gov/vuln/detail/CVE-2026-76461 (opens in a new tab)
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| CiscoCisco Secure Email | Affected
| 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.