VULNERABILITY INTELLIGENCE

CVE-2026-32953

CVSS score4.6 MEDIUM
EPSS probability0.25%
CISA KEVNot currently listed
Published2026-03-20
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Description

Tillitis TKey Client package is a Go package for a TKey client. Versions 1.2.0 and below contain a critical bug in the tkeyclient Go module which causes 1 out of every 256 User Supplied Secrets (USS) to be silently ignored, producing the same Compound Device Identifier (CDI)—and thus the same key material—as if no USS is provided. This happens because a buffer index error overwrites the USS-enabled boolean with the first byte of the USS digest, so any USS whose hash starts with 0x00 is effectively discarded. This issue has been fixed in version 1.3.0. Users unable to upgrade immediately should switch to a USS whose hash does not begin with a zero byte.

Weakness classification

  • security-advisories@github.com: CWE-303
  • nvd@nist.gov: NVD-CWE-noinfo

Primary references