CVE-2025-64657 Azure Application Gateway Elevation of Privilege Vulnerability
An unauthorized attacker can exploit a stack-based buffer overflow in Azure Application Gateway to elevate privileges over the network.
- 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-2025-64657?
CVE-2025-64657 is a critical memory corruption vulnerability in Microsoft Azure App Gateway, published on 26 Nov 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Stack-based buffer overflow in Azure Application Gateway allows an unauthorized attacker to elevate privileges over a network.
Weakness: CWE-787
Which versions are affected by CVE-2025-64657?
It affects 1 product.
Products include Microsoft Azure Application Gateway.
How do I fix CVE-2025-64657?
No fix has been published for CVE-2025-64657 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-2025-64657 being exploited?
There is no known exploitation of CVE-2025-64657 in the wild and no public exploit code.
Other vulnerabilities in Microsoft Azure App Gateway
Sources
Also known as GHSA-w337-cfcg-vpqj.