What’s Vulnerable › Vulnerabilities

CVE-2024-32482: Tillitis TKey Signer possible RAM disclosure vulnerability

• Severity: low (CVSS 2.2 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.1% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2024-04-23 · updated 2026-06-17
• Weakness: CWE-125

Description

The Tillitis TKey signer device application is an ed25519 signing tool. A vulnerability has been found that makes it possible to disclose portions of the TKey’s data in RAM over the USB interface. To exploit the vulnerability an attacker needs to use a custom client application and to touch the TKey. No secret is disclosed. All client applications integrating tkey-device-signer should upgrade to version 1.0.0 to receive a fix. No known workarounds are available.

Affected products

• tillitis Tkey Device Signer: before 1.0.0 — fixed in 1.0.0

How to fix

Upgrade to a fixed version: tillitis Tkey Device Signer 1.0.0. Check the vendor advisory for mitigations.

References

• https://bugbounty.tillitis.se/security-bulletins/tillitis-security-bulletin-240115-1
• https://github.com/tillitis/tkey-device-signer/security/advisories/GHSA-frqc-62hv-379p
• https://bugbounty.tillitis.se/security-bulletins/tillitis-security-bulletin-240115-1
• https://github.com/tillitis/tkey-device-signer/security/advisories/GHSA-frqc-62hv-379p

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