CVE-2026-5194 (GCVE-0-2026-5194)

Vulnerability from cvelistv5 – Published: 2026-04-09 19:30 – Updated: 2026-05-23 22:06
VLAI
Title
wolfSSL ECDSA Certificate Verification
Summary
Missing hash/digest size and OID checks allow digests smaller than allowed when verifying ECDSA certificates, or smaller than is appropriate for the relevant key type, to be accepted by signature verification functions. This could lead to reduced security of ECDSA certificate-based authentication if the public CA key used is also known. This affects ECDSA/ECC verification when EdDSA or ML-DSA is also enabled.
Severity
9.3 (Critical)
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:L/SC:H/SI:L/SA:L/U:Red
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-04-21 00:00 UTC
CWE
  • CWE-295 - Improper Certificate Validation
Assigner
wolfSSL CNA under the icscert root
CNA scorecard B 80/100 over 51 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
wolfSSL wolfSSL Affected: 3.12.0 , < 5.9.1 (semver)
guessed Create a notification for this product.
Credits
Nicholas Carlini from Anthropic
Show details on NVD website
To clipboard 

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