Security Vulnerability in AMD CPUs Allowing Configuration Modification
CVE-2025-29943

4.6MEDIUM

Key Information:

Vendor

Amd
Status
Amd Epyc™ 9004 Series Processors
Amd Epyc™ 9005 Series Processors
Amd Epyc™ 8004 Series Processors
Amd Epyc™ Embedded 7003 Series Processors
Vendor
CVE Published:
16 January 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2025-29943?

A security vulnerability has been identified in AMD CPUs, which may permit an administrator-privileged attacker to alter the configuration of the CPU pipeline. This manipulation could potentially corrupt the stack pointer within a Secure Encrypted Virtualization-Scalable Nested Page Tables (SEV-SNP) guest, affecting the integrity and security of virtualized environments. Users of AMD EPYC and Ryzen processors should remain vigilant and apply necessary mitigations as detailed in the latest security bulletins.

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Affected Version(s)

AMD EPYC™ 8004 Series Processors Genoa++_1.0.0.H

AMD EPYC™ 9004 Series Processors Genoa++_1.0.0.H

AMD EPYC™ 9005 Series Processors TurinPI_1.0.0.6

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

POC_CVE-2025-29943_Write-what-where-Condition
Created by fevar54

References

https://www.amd.com/en/resources/product-security/bulleti...

CVSS V4

Score:
4.6
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Local
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • đź‘ľ

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

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