Quick answers
- Is CVE-2025-54507 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2025-54507 being exploited in the wild.
- How severe is CVE-2025-54507?
- Informational severity, published 12 November 2026.
- Which products and versions are affected?
- AMD SEV (Secure Encrypted Virtualization) firmware.
- Is there a fix for CVE-2025-54507?
- 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-2025-54507 attacked?
- It is attacked with local access, in device firmware.
- Am I affected by CVE-2025-54507?
- Check whether you run Amd SEV (Secure Encrypted Virtualization) 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
An improper validation weakness in AMD SEV firmware fails to prevent duplicate Reverse Map Table (RMP) entries for the same guest physical address. The vulnerability requires administrative privileges to exploit and results in loss of guest memory integrity guarantees provided by the SEV security model.
Affected products
- AMD SEV (Secure Encrypted Virtualization) firmware
Timeline
- 2026-11-12: disclosed