CVE-2025-29943

medium

Description

Write what were condition within AMD CPUs may allow an admin-privileged attacker to modify the configuration of the CPU pipeline potentially resulting in the corruption of the stack pointer inside an SEV-SNP guest.

References

References
More

https://thehackernews.com/2026/01/new-stackwarp-hardware-flaw-breaks-amd.html

https://www.theregister.com/2026/01/15/stackwarp_bug_amd_cpus/

https://www.securityweek.com/new-stackwarp-attack-threatens-confidential-vms-on-amd-processors/

https://www.amd.com/en/resources/product-security/bulletin/AMD-SB-3027.html

Details

Source: Mitre, NVD

Published: 2026-01-16

Updated: 2026-01-16

Named Vulnerability: StackWarp

Risk Information

CVSS v2

Base Score: 6.4

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:P/A:P

Severity: Medium

CVSS v3

Base Score: 7.8

Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Severity: High

CVSS v4

Base Score: 4.6

Vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:N/SC:N/SI:L/SA:N