CVE-2026-76464 Cisco Meraki Hardening Release October 2026 - Buffer Management Vulnerabilities
Buffer management flaws in Cisco Meraki firmware allow attackers to execute arbitrary code or cause denial of service.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-76464?
CVE-2026-76464 is a critical memory corruption vulnerability in Cisco Campus Gateway Software, published on 7 Oct 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco networking 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 this CVE-2026-76464 are related to buffer management issues that are grouped under the Common Weakness Enumeration (CWE) CWE-119.
Weakness: CWE-119
Which versions are affected by CVE-2026-76464?
How do I fix CVE-2026-76464?
No fix has been published for CVE-2026-76464 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2026-76464 being exploited?
There is no known exploitation of CVE-2026-76464 in the wild and no public exploit code.
Sources
Also known as GHSA-gmqq-qr7p-pfwh.