Quick answers
- Is CVE-2025-54504 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2025-54504 being exploited in the wild.
- How severe is CVE-2025-54504?
- Informational severity, published 10 November 2026.
- Which products and versions are affected?
- AMD Secure Encrypted Virtualization (SEV) firmware.
- Is there a fix for CVE-2025-54504?
- 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-2025-54504 attacked?
- It is attacked with local access, in device firmware.
- Am I affected by CVE-2025-54504?
- Check whether you run Amd Secure Encrypted Virtualization (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
Insufficient granularity of access control in AMD SEV firmware fails to adequately restrict write access to a trusted region used by SEV-ES, allowing an attacker with administrative privileges to modify protected state. This is a firmware-level vulnerability requiring local privileged access to exploit, potentially breaking the integrity assurances of SEV-encrypted virtual machines.
Affected products
- AMD Secure Encrypted Virtualization (SEV) firmware
Timeline
- 2026-11-10: disclosed