Linux Distros Unpatched Vulnerability : CVE-2026-89135

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - A failed X509verifycert call permanently plants an unverified attacker CA in the shared CertManager, bypassing certificate validation in every type-blind siblin...

CVE-2026-89135

A failed X509verifycert 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 OPENSSLEXTRA &&...

DEBIAN-CVE-2026-89135

A failed X509verifycert 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 OPENSSLEXTRA &&...

UBUNTU-CVE-2026-89135

A failed X509verifycert 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 OPENSSLEXTRA &&...

CVE-2026-89135

A failed X509verifycert 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 OPENSSLEXTRA &&...

CVE-2026-89135 Failed X509_verify_cert leaves unverified CA in shared CertManager

A failed X509verifycert 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 OPENSSLEXTRA &&...

CVE-2026-89135 Failed X509_verify_cert leaves unverified CA in shared CertManager

A failed X509verifycert 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 OPENSSLEXTRA &&...

CVE-2026-89135

The wolfSSL library, versions 5.8.4 through 5.9.2 , is vulnerable to a flaw where a failed X509_verify_cert call permanently installs an unverified attacker Certificate Authority (CA) into the shared CertManager . This allows an attacker to bypass certificate validation across various consumers, ...

EUVD-2026-87912

A failed X509verifycert 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 OPENSSLEXTRA &&...

CVE-2026-89135

A failed X509verifycert 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 OPENSSLEXTRA &&...

CVE-2026-11999 X.509 trust-chain bypass via path-depth exhaustion in wolfSSL_X509_verify_cert()

X.509 trust-chain bypass path-depth exhaustion in the OpenSSL compatibility certificate verifier wolfSSLX509verifycert. This affects only builds with --enable-opensslextra whose application calls X509verifycert with caller-supplied untrusted intermediates; for those users it is critical, otherwis...

CVE-2026-55964: Improper Certificate Validation

Chain intermediate CA:TRUE without keyCertSign accepted as a signing CA. Intermediate CA certificates are required to have the keyCertSign key usage when a Key Usage extension is present, but chain-supplied temporary CAs WOLFSSLTEMPCA added while building a certificate path were previously exempt...

CVE-2026-11310: Improper Certificate Validation

X.509 trust-chain bypass in the OpenSSL compatibility certificate verifier wolfSSLX509verifycert. This affects only builds with --enable-opensslextra OPENSSLEXTRA and whose application validates certificates by calling X509verifycert with caller-supplied untrusted intermediate certificates; for...

CVE-2026-11999: Improper Certificate Validation

X.509 trust-chain bypass path-depth exhaustion in the OpenSSL compatibility certificate verifier wolfSSLX509verifycert. This affects only builds with --enable-opensslextra whose application calls X509verifycert with caller-supplied untrusted intermediates; for those users it is critical, otherwis...

K83823933: OpenSSL Vulnerability CVE-2021-4044

Security Advisory Description Internally libssl in OpenSSL calls X509verifycert on the client side to verify a certificate supplied by a server. That function may return a negative return value to indicate an internal error for example out of memory. Such a negative return value is mishandled by...

CVE-2021-4044: Invalid handling of X509_verify_cert() internal errors in libssl

Security Advisory ID : BSA-2022-1661 Component : OpenSSL Revision : 1.0 A flaw was found in the way OpenSSL verified certificates via the X509verifycert function. X509verifycert fuunction may return a negative return value to indicate an internal error for example, out of memory. Such a negative...

CVE-2021-4044: Invalid handling of X509_verify_cert() internal errors in libssl

A flaw was found in the way OpenSSL verified certificates via the X509verifycert function. X509verifycert fuunction may return a negative return value to indicate an internal error for example, out of memory. Such a negative return value is mishandled by OpenSSL and will cause an IO function such...

Internet Bug Bounty: Invalid handling of X509_verify_cert() internal errors in libssl (CVE-2021-4044)

Internally libssl in OpenSSL calls X509verifycert on the client side to verify a certificate supplied by a server. That function may return a negative return value to indicate an internal error for example out of memory. Such a negative return value is mishandled by OpenSSL and will cause an IO...

CVE-2021-4044

A flaw was found in the way OpenSSL verified certificates via the X509verifycert function. An internal error was not correctly validated causing application crashes or invalid application behavior...

OpenSSL: Invalid handling of X509_verify_cert() internal errors (20211214) - Windows

OpenSSL is prone to an invalid handling of X509verifycert internal errors vulnerability. Copyright C 2021 Greenbone Networks GmbH Some text descriptions might be excerpted from a referenced sources, and are Copyright C by the respective right holders. SPDX-License-Identifier: GPL-2.0-or-later Thi...