Tillitis TKey Signer possible RAM disclosure vulnerability
Key facts
- Attack vector
- Local
- Privileges required
- Low
- User interaction
- Required
- Attack complexity
- High
- Impact type
- Information disclosure
- Confidentiality · integrity · availability
- Low · None · None
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-125 and the CVSS impact.
Summary
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.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
Remediation
- Fix · CNA tkey-device-signer (tillitis) Fixed in 1.0.0
Timeline
- 2026-10-02 Threatist record created from CVE-2024-32482
References
More tillitis vulnerabilities
- TI-2026-25401 Tillitis: TKey Client has an Error in Protocol Implementation CVSS 4.0MEDIUM 4.7
Sources
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences