CVE-2025-11934CWE-20

CVE-2025-11934

Low · published November 22, 2025

CVSS v3.1
2.7
EPSS
0%
Percentile
5.4
In the wild
Unconfirmed
What it is

Improper input validation in the TLS 1.3 CertificateVerify signature algorithm negotiation in wolfSSL 5.8.2 and earlier on multiple platforms allows for downgrading the signature algorithm used. For example when a client sends ECDSA P521 as the supported signature algorithm the server previously could respond as ECDSA P256 being the accepted signature algorithm and the connection would continue with using ECDSA P256, if the client supports ECDSA P256.

The record
Technical detail
CVSS v3.1
2.7 · LOW
Vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:N
CVSS v4.0
Not supplied
EPSS
0.00165 · 5.4th percentile
Weakness
CWE-20 · Improper Input Validation
Published
2025-11-22T04:15Z
Affected products (1)
ProductVersionsFixed in
wolfssl/wolfssl≥ 5.8.2, < 5.8.45.8.4
References (3)
https://github.com/wolfSSL/wolfssl · [email protected]https://github.com/wolfSSL/wolfssl/pull/9113 · [email protected]https://github.com/wolfSSL/wolfssl/pull/9113 · 134c704f-9b21-4f2e-91b3-4a467353bcc0
EPSS history
Timeline
  • 21 NOV 22:12Z
    Improper Validation of Signature Algorithm Used in TLS 1.3 CertificateVerify
    cvelistv5