Quick answers
- Is CVE-2025-54508 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2025-54508 being exploited in the wild.
- How severe is CVE-2025-54508?
- Informational severity, published 10 November 2026.
- Which products and versions are affected?
- AMD SEV firmware.
- Is there a fix for CVE-2025-54508?
- No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
- How is CVE-2025-54508 attacked?
- It is attacked with local access, in device firmware.
- Am I affected by CVE-2025-54508?
- Check whether you run Amd SEV firmware. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
The vulnerability exists in the SEV firmware's Reverse Map Table (RMP) validation logic, where insufficient synchronization allows concurrent modifications to RMP entries from a privileged context. An attacker with elevated privileges can trigger race conditions in RMP entry updates, leading to loss of data integrity guarantees that SEV provides. This is a synchronization defect rather than a direct memory corruption vector.
Affected products
- AMD SEV firmware
Timeline
- 2026-11-10: disclosed