CVE-2026-32953

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.

• CWE-303

• https://github.com/tillitis/tkeyclient/commit/4954dccf0287657edf8d405057e134cdff9c59e8Patch
• https://github.com/tillitis/tkeyclient/releases/tag/v1.3.0Release Notes
• https://github.com/tillitis/tkeyclient/security/advisories/GHSA-4w7r-3222-8h6vExploit, Vendor Advisory

Published

Mar 20, 2026

Last Modified

Jun 17, 2026

Status

Analyzed

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
• Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
• PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
• AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.

• CVE-2026-32947Harden-Runner is a CI/CD security agent that works like an E…4.9
• CVE-2026-32948sbt is a build tool for Scala, Java, and others. From versio…7.8
• CVE-2026-32949SQLBot is an intelligent data query system based on a large …7.5
• CVE-2026-32950SQLBot is an intelligent data query system based on a large …8.8
• CVE-2026-32951Discourse is an open-source discussion platform. From versio…4.3
• CVE-2026-32952go-ntlmssp is a Go package that provides NTLM/Negotiate auth…7.5
• CVE-2026-32954ERP is a free and open source Enterprise Resource Planning t…7.5
• CVE-2026-32955SD-330AC and AMC Manager provided by silex technology, Inc. …8.8
• CVE-2026-32956SD-330AC and AMC Manager provided by silex technology, Inc. …9.8
• CVE-2026-32957SD-330AC and AMC Manager provided by silex technology, Inc. …6.9
• CVE-2026-32958SD-330AC and AMC Manager provided by silex technology, Inc. …6.9
• CVE-2026-32959SD-330AC and AMC Manager provided by silex technology, Inc. …8.2