by Kastro
Paper/Archive/CVE-2026-5194

CVE-2026-5194

wolfSSL wolfSSL — wolfSSL ECDSA Certificate Verification

EPSS 0.6%CVSS 9.3
critical.is priorityof 100
37
CVSS 9.3 (CNA)9.3 / 10 × 3027.9Not in CISA KEV+300.0EPSS percentile 47.3.473 × 209.5No public exploit+100.0SSVC exploitation: none+100.0
Description · from the CVE record

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.

Affected

ProductAffectedFixed inSource
wolfSSL3.12.0 – < 5.9.15.9.1CNA

Scores by source

wolfSSL (CNA)9.3CVSS: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
NVD9.1CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
CISA ADPSSVCExploitation: none · Automatable: no · Technical impact: total

References

patchgithub.com/wolfSSL/wolfssl/pull/10131refanthropic.com/research/glasswing-initial-update