Description
With TLS 1.3 pre-shared key (PSK) a malicious or faulty server could ignore the request for PFS (perfect forward secrecy) and the client would continue on with the connection using PSK without PFS. This happened when a server responded to a ClientHello containing psk_dhe_ke without a key_share extension. The re-use of an authenticated PSK connection that on the clients side unexpectedly did not have PFS, reduces the security of the connection.
Metrics
CVSS 3.1 7.5/10
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:NWeakness enumeration
Affected software
| Vendor | Product | Versions |
|---|---|---|
| wolfSSL | wolfSSL | >= 3.12.0, < 5.8.4 |
References
- https://github.com/wolfSSL/wolfsslProduct
- https://github.com/wolfSSL/wolfssl/pull/9112Issue Tracking, Patch
Timeline
- Published
- Nov 21, 2025
- Last modified
- Oct 19, 2026
- NVD status
- Analyzed