# CVE-2025-52537: AMD Secure Encrypted Virtualization access control in SEV firmware

Source: https://junglewise.ai/threats/cve-2025-52537-improper-access-control-within-the-amd-secure-encrypted  
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-2025-52537 · Severity: info · Published 2026-11-10

AMD Secure Encrypted Virtualization (SEV) firmware contains an access control flaw that could allow administrators with elevated privileges to tamper with encrypted virtual machine memory. This could compromise the integrity of sensitive data running within protected virtual machines, breaking the security guarantee that SEV is designed to provide.

## Quick answers

**Is CVE-2025-52537 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2025-52537 being exploited in the wild.

**How severe is CVE-2025-52537?** Informational severity, published 10 November 2026.

**Which products and versions are affected?** AMD Secure Encrypted Virtualization (SEV) firmware.

**Is there a fix for CVE-2025-52537?** 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-2025-52537 attacked?** It is attacked with local access, in device firmware.

**Am I affected by CVE-2025-52537?** Check whether anything you run is named in the advisory. 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 has improper access control mechanisms that fail to adequately restrict administrative-level access to guest memory regions. An attacker with administrative privileges could exploit this flaw to read or modify encrypted guest memory, undermining the confidentiality and integrity protections of virtualized workloads. The vulnerability requires administrative-level access and affects the SEV firmware component.

## Affected products

- AMD Secure Encrypted Virtualization (SEV) firmware

## Timeline

- 2026-11-10: disclosed

## References

- [https://www.amd.com/en/resources/product-security/bulletin/AMD-SB-3037.html](https://www.amd.com/en/resources/product-security/bulletin/AMD-SB-3037.html)