CVE-2025-11935 Forward Secrecy Violation in WolfSSL TLS 1.3

What is CVE-2025-11935?

CVE-2025-11935 is a medium-severity vulnerability in Wolfssl Wolfssl, published on 21 Nov 2025.

Official 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.

Weakness: CWE-326

Which versions are affected by CVE-2025-11935?

It affects 1 product.

Products include Wolfssl Wolfssl.

How do I fix CVE-2025-11935?

No fix has been published for CVE-2025-11935 yet. Limit exposure of the affected software until one is available.

Is CVE-2025-11935 being exploited?

There is no known exploitation of CVE-2025-11935 in the wild and no public exploit code.

Other vulnerabilities in Wolfssl Wolfssl

• CVE-2024-5991 Buffer overread in domain name matching Critical 10.0
• CVE-2021-37155 Security feature bypass in n/a Critical 9.8
• CVE-2020-36177 Memory corruption in n/a Critical 9.8
• CVE-2014-2896 Memory corruption in n/a Critical 9.8
• CVE-2014-2897 Memory corruption in n/a Critical 9.8

All Wolfssl Wolfssl vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as DEBIAN-CVE-2025-11935, GHSA-4497-xvm3-5vh9, UBUNTU-CVE-2025-11935.