4.5

CVE-2025-29946: amd64-microcode

Deferred
AliasesUBUNTU-CVE-2025-29946DEBIAN-CVE-2025-29946
Published 10-02-2026Last modified 10-02-2026

Vulnerability summary

CVE-2025-29946 is a medium (CVSS 4.5) vulnerability in amd64-microcode. EPSS estimates a 0.16% chance of exploitation in the next 30 days, higher than 4.9% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 4.5, local access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
4.5/10
010
Medium · v4.0 (CVE.org)
EPSS score
0.16%
0%100%
Low · +0.01 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Timeline

  1. 10-02-2026
    PublishedVulnerability first disclosed.
  2. 10-02-2026
    Last modifiedVulnerability information updated.

Description

Insufficient or Incomplete Data Removal in Hardware Component in SEV firmware doesn't fully flush IOMMU. This can potentially lead to a loss of confidentiality and integrity in guest memory.

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.16%

Chance of exploitation in the next 30 days

Percentile

5%

Versus all other CVEs

30-day change

Increase +0.01 pp

From 0.15% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: local access, administrative account, no user interaction (CVSS vector). Other conditions: not stated in public data.

Debian1 product
  • amd64-microcodeAll versions (No fix recorded)
Ubuntu1 product
  • amd64-microcodeAll versions (No fix recorded)

2 vendors · 2 products

References

4 links