CVE-2025-11934
wolfSSL vulnerability analysis and mitigation

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.


SourceNVD

Related wolfSSL vulnerabilities:

CVE ID

Severity

Score

Technologies

Component name

CISA KEV exploit

Has fix

Published date

CVE-2025-11936MEDIUM6.3
  • wolfSSLwolfSSL
  • cpe:2.3:a:wolfssl:wolfssl
NoYesNov 21, 2025
CVE-2025-12889LOW2.3
  • wolfSSLwolfSSL
  • wolfssl
NoYesNov 22, 2025
CVE-2025-11934LOW2.1
  • wolfSSLwolfSSL
  • cpe:2.3:a:wolfssl:wolfssl
NoYesNov 21, 2025
CVE-2025-13912LOW1
  • wolfSSLwolfSSL
  • cpe:2.3:a:wolfssl:wolfssl
NoYesDec 11, 2025
CVE-2025-12888LOW1
  • wolfSSLwolfSSL
  • wolfssl
NoYesNov 21, 2025

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