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.

INFO

Published Date :

2026-03-20T04:24:12.374Z

Last Modified :

2026-03-20T18:08:15.041Z

Source :

GitHub_M
AFFECTED PRODUCTS

The following products are affected by CVE-2026-32953 vulnerability.

Vendors Products
Tillitis
  • Tkey Client
  • Tkeyclient
REFERENCES

Here, you will find a curated list of external links that provide in-depth information to CVE-2026-32953.

URL Resource
https://github.com/tillitis/tkeyclient/commit/4954dccf0287657edf8d405057e134cdff9c59e8 cve-icon cve-icon
https://github.com/tillitis/tkeyclient/releases/tag/v1.3.0 cve-icon cve-icon
https://github.com/tillitis/tkeyclient/security/advisories/GHSA-4w7r-3222-8h6v cve-icon cve-icon
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CVSS Vulnerability Scoring System

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Detailed values of each vector for above chart.
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact