CVE-2026-89135NVD

Vulnerability Summary

A failed X509_verify_cert call permanently plants an unverified attacker CA in the shared CertManager, bypassing certificate validation in every type-blind sibling consumer (native TLS, OCSP, CRL, direct CM verify). This affects version 5.8.4 through 5.9.2 of wolfSSL with the macros (OPENSSL_EXTRA && !NO_CERTS && !WOLFCRYPT_ONLY) defined or built with --enable-opensslextra and the application is specifically making calls to the X509_verify_cert function.

Severity Level

MEDIUM(6.3)

Published Date

Sep 27, 2026

Last Modified

Sep 27, 2026

Exploitation Status

No confirmed exploitation yet

EPSS Score (30-Day)

0.21%Probability

Root Weakness (CWE)

CWE-295: Unknown/Unlisted Weakness ↗

Refer to the official MITRE database for detailed architectural specifications regarding this weakness.

CVSS v4.0 Base Metrics — Score 6.3 (MEDIUM)

Attack VectorNetwork

Attack ComplexityHigh

Attack RequirementsPresent

Privileges RequiredNone

User InteractionNone

Confidentiality (Vulnerable System)Low

Integrity (Vulnerable System)Low

Availability (Vulnerable System)None

Confidentiality (Subsequent System)None

Integrity (Subsequent System)None

Availability (Subsequent System)None

Affected & Patched Versions

Affected Versions

wolfSSL wolfSSL >= 5.8.4 and <= 5.9.2

Patched Versions

wolfSSL wolfSSL 5.9.2

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