CVE-2026-76453 Cisco NX-OS Software Security Hardening Release: October 2026 - Improper Neutralization Vulnerabilities
Cisco NX-OS contains improper neutralization vulnerabilities requiring a security hardening patch to mitigate potential risks.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-76453?
CVE-2026-76453 is a high-severity vulnerability in Cisco NX-OS Software, published on 7 Oct 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco NX-OS engineering team has conducted a comprehensive internal security review. This review resulted in a software hardening release that addresses multiple internally discovered vulnerabilities. The vulnerabilities tracked by CVE-2026-76453 are related to improper neutralization issues that are grouped under the Common Weakness Enumeration (CWE) CWE-707.
Weakness: CWE-707
Which versions are affected by CVE-2026-76453?
How do I fix CVE-2026-76453?
No fix has been published for CVE-2026-76453 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-76453 being exploited?
There is no known exploitation of CVE-2026-76453 in the wild and no public exploit code.
Sources
Also known as GHSA-f77q-jh4p-g2hw.