# CVE-2025-29941: AMD SEV firmware pseudo-random number generator seed misuse

Source: https://junglewise.ai/threats/cve-2025-29941-incorrect-usage-of-seeds-in-pseudo-random-number-generator-in-the  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-11-10. Updated: 2026-11-10  
License: CC BY 4.0 with a link back

CVE-2025-29941 · Severity: info · Published 2026-11-10

AMD's Secure Encrypted Virtualization (SEV) firmware contains a flaw in how it seeds its pseudo-random number generator. An attacker with hypervisor or migration agent access could exploit this to forge guest encryption contexts, potentially compromising the confidentiality of encryption keys used to protect guest virtual machines.

Technologies: [Amd SEV firmware](https://junglewise.ai/threats/technologies/sev-firmware). Vendors: [Amd](https://junglewise.ai/threats/vendors/amd).

## Quick answers

**Is CVE-2025-29941 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2025-29941 being exploited in the wild.

**How severe is CVE-2025-29941?** Informational severity, published 10 November 2026.

**Which products and versions are affected?** AMD SEV firmware.

**Is there a fix for CVE-2025-29941?** 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-2025-29941 attacked?** It is attacked from the adjacent network, in device firmware.

**Am I affected by CVE-2025-29941?** 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 SEV firmware incorrectly reuses or initializes PRNG seeds in a predictable manner, allowing an adversary with hypervisor or migration agent privileges to predict generated random values. This enables injection of forged guest contexts during guest import or migration, leading to exposure of derived guest encryption keys. The attack requires elevated privileges within the virtualization environment.

## Affected products

- AMD SEV firmware

## Timeline

- 2026-11-10: disclosed

## References

- [https://www.amd.com/en/resources/product-security/bulletin/AMD-SB-3038.html](https://www.amd.com/en/resources/product-security/bulletin/AMD-SB-3038.html)

## Related threats

- [AMD SEV firmware improper RMP validation](https://junglewise.ai/threats/cve-2025-54508-improper-validation-of-reverse-map-table-rmp-entries-in-the)
- [AMD SEV firmware TOCTOU race condition in scatter list validation](https://junglewise.ai/threats/cve-2025-54506-a-time-of-check-to-time-of-use-toctou-race-condition-in-the-amd)
- [AMD SEV firmware improper handling of memory range overlaps](https://junglewise.ai/threats/cve-2025-54503-improper-handling-of-overlap-between-protected-memory-ranges-in)