CVE-2026-12681 Affecting tbot package, versions <18.9.2-r2
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-CHAINGUARDLATEST-TBOT-19430439
- published30 Aug 2026
- disclosed24 Jun 2026
Introduced: 24 Jun 2026
CVE-2026-12681 (opens in a new tab)How to fix?
Upgrade Chainguard tbot to version 18.9.2-r2 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream tbot package and not the tbot package as distributed by Chainguard.
See How to fix? for Chainguard relevant fixed versions and status.
Improper Validation of Specified Index, Position, or Offset in Input vulnerability in Google go-attestation. parseEfiSignatureList() does not advance the buffer past vendor bytes before reading entries. For hashSHA256SigGUID lists, this allows attacker-controlled vendor header bytes to be appended to the trusted SHA256 hash list. A crafted TPM event log could inject arbitrary SHA256 hashes into the verifier's trusted measurement database, enabling a remote attestation verifier to accept a compromised boot state. This issue affects go-attestation: through 0.6.0.