CVE-2026-76442 Cisco Secure Email Gateway Security Hardening Release
Cisco Secure Email Gateway contains improper input validation flaws that could lead to denial of service, requiring a security hardening patch.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-76442?
CVE-2026-76442 is a high-severity vulnerability in Cisco Secure Email, published on 14 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco Secure Email Gateway and Cisco Secure Email and Web Manager engineering team has conducted a comprehensive internal security review. This review resulted in software hardening releases that address multiple internally discovered vulnerabilities. The vulnerabilities tracked by CVE-2026-76442 are related to issues with improper validation of specified quantity in input that are grouped under the Common Weakness Enumeration (CWE) Pillar CWE-1284.
Weakness: CWE-1284
Which versions are affected by CVE-2026-76442?
How do I fix CVE-2026-76442?
No fix has been published for CVE-2026-76442 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-76442 being exploited?
There is no known exploitation of CVE-2026-76442 in the wild and no public exploit code.
Sources
Also known as GHSA-wq94-r9v8-g7wm.