CVE-2026-5194

CVE Enrichment

CVSS: 9.3 CRITICAL
EPSS: 0.57%
EPSS Percentile: 47.26%
CISA KEV: Not listed

Description

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.

Technical Details

CVSS Version: 4.0
CNA / NVD Source: [email protected]
Published: 10-Apr-2026 03:16
Last Modified: 17-Jun-2026 17:58
EPSS Date: 2026-11-02
CWE: CWE-295

CVSS Vector


            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 /
                            E:X /
                            CR:X /
                            IR:X /
                            AR:X /
                            MAV:X /
                            MAC:X /
                            MAT:X /
                            MPR:X /
                            MUI:X /
                            MVC:X /
                            MVI:X /
                            MVA:X /
                            MSC:X /
                            MSI:X /
                            MSA:X /
                            S:X /
                            AU:X /
                            R:X /
                            V:X /
                            RE:X /
                            U:Red

Affected Products / Versions

wolfssl / wolfssl Source: NVD CPE · affected
Version / affected range: * · from (inclusive) 3.12.0 · before (exclusive) 5.9.1
cpe:2.3:a:wolfssl:wolfssl:*:*:*:*:*:*:*:*

References

Last enrichment sync: 03-Nov-2026 00:52
Sources: NVD · FIRST EPSS · CISA KEV
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Reported Context (2)

#ProjectGlasswing Anthropic Says Project Glasswing Found Thousands of Serious Software Flaws
A critical cryptographic validation flaw in the wolfSSL TLS/SSL library (CVE-2026-5194) can accept improperly small hash digests during ECDSA and related signature verification, allowing forged certificates to be wolfSSL Flaw Could Allow Forged Certificates to Be Accepted

People (2)

Vendors (2)

Products (2)

Industries (1)

Note: Related entities, including threat actors, malware, CVEs, MITRE ATT&CK techniques, vendors, products, tools, countries, and industries, are shown when they appear in the same reporting. Their presence does not necessarily mean they were targeted, compromised, vulnerable, responsible for the activity, or directly involved in the incident.