CVE-2025-63913 Denial of service in n/a
Attackers can cause a denial of service in OpenSBI by sending crafted requests to specific SBI PMU extension functions.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2025-63913?
CVE-2025-63913 is a high-severity denial of service vulnerability in n/a, published on 27 Jul 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
An issue was discovered in OpenSBI 1.3 allowing attackers to cause a denial of service via crafted request to the SBI function #2 or the 'Find and configure a matching counter' function of SBI PMU extension.
Weakness: CWE-400
Which versions are affected by CVE-2025-63913?
How do I fix CVE-2025-63913?
Apply the vendor's patch.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2025-63913 being exploited?
There is no known exploitation of CVE-2025-63913 in the wild and no public exploit code.
Sources
Also known as AZL-94302, DEBIAN-CVE-2025-63913, GHSA-2rpc-x25h-pv3j, UBUNTU-CVE-2025-63913, USN-8853-1.