PYSEC-2026-4320 certifi bundles emSign root CAs with compromised intermediate CA keys

Certifi versions before 2026.10.18 include the emSign ECC Root CA - G3 root certificate in their bundled CA store. Eight eMudhra intermediate CA certificates that chain to this root have compromised private keys and the CA has revoked them. An attacker with one of the compromised keys can issue...

certifi bundles emSign root CAs with compromised intermediate CA keys

Certifi versions before 2026.10.18 include the emSign ECC Root CA - G3 root certificate in their bundled CA store. Eight eMudhra intermediate CA certificates that chain to this root have compromised private keys and the CA has revoked them. An attacker with one of the compromised keys can issue...

emudhra-poc

eMudhra CA Key Compromise Proof-of-Concept In October 2026, e...

CVE-2026-111943

crypto/x509: Verify and the macOS/Windows platform verifiers returned certificate chains through a set of intermediate CA certificates that Go now distrusts due to security concerns around their operation. Go 1.26.10 and 1.27.3 filter out any chain containing these intermediates, identified by...

CVE-2026-86881

A certificate validation issue was addressed with improved certificate validation. This issue is fixed in iOS 26.7 and iPadOS 26.7, iOS 27 and iPadOS 27, macOS Golden Gate 27, macOS Sequoia 15.8, macOS Tahoe 26.7, tvOS 27, visionOS 27, watchOS 27. An attacker with a compromised intermediate...

EUVD-2026-77977

A certificate validation issue was addressed with improved certificate validation. This issue is fixed in iOS 26.7 and iPadOS 26.7, iOS 27 and iPadOS 27, macOS Golden Gate 27, macOS Sequoia 15.8, macOS Tahoe 26.7, tvOS 27, visionOS 27, watchOS 27. An attacker with a compromised intermediate...

CVE-2026-86881

A certificate validation issue was addressed with improved certificate validation. This issue is fixed in iOS 26.7 and iPadOS 26.7, iOS 27 and iPadOS 27, macOS Golden Gate 27, macOS Sequoia 15.8, macOS Tahoe 26.7, tvOS 27, visionOS 27, watchOS 27. An attacker with a compromised intermediate...

CVE-2026-86881

A certificate validation issue in Apple products allows an attacker with a compromised intermediate certificate authority to issue certificates with arbitrary extended key usages . This vulnerability affects iOS 26.7, iPadOS 26.7, iOS 27, iPadOS 27, macOS Golden Gate 27, macOS Sequoia 15.8, macOS...

CVE-2026-86881

A certificate validation issue was addressed with improved certificate validation. This issue is fixed in iOS 26.7 and iPadOS 26.7, iOS 27 and iPadOS 27, macOS Golden Gate 27, macOS Sequoia 15.8, macOS Tahoe 26.7, tvOS 27, visionOS 27, watchOS 27. An attacker with a compromised intermediate...

PT-2026-91682

Name of the Vulnerable Software and Affected Versions iOS versions prior to 26.7 iPadOS versions prior to 26.7 iOS versions prior to 27 iPadOS versions prior to 27 macOS Golden Gate versions prior to 27 macOS Sequoia versions prior to 15.8 macOS Tahoe versions prior to 26.7 tvOS versions prior to...

CVE-2026-57826

An issue was discovered in openHiTLS 0.2.0 through 0.3.2. In the X.509 certificate chain verification, the basic constraints extension and CA flag processing of intermediate CAs are only verified for v3 certificates, and v1/v2 certificates are ignored...

CVE-2026-57826

The openHiTLS library (versions 0.2.0 through 0.3.2 ) contains a vulnerability in its X.509 certificate chain verification process. The root cause is that the software only verifies the basic constraints extension and CA flag processing for v3 certificates , while completely ignoring v1 and v2 ce...

EUVD-2026-61278

An issue was discovered in openHiTLS 0.2.0 through 0.3.2. In the X.509 certificate chain verification, the basic constraints extension and CA flag processing of intermediate CAs are only verified for v3 certificates, and v1/v2 certificates are ignored...

CVE-2026-57826: Improper Certificate Validation

An issue was discovered in openHiTLS 0.2.0 through 0.3.2. In the X.509 certificate chain verification, the basic constraints extension and CA flag processing of intermediate CAs are only verified for v3 certificates, and v1/v2 certificates are ignored...

DEBIAN-CVE-2026-55964

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...

PT-2026-52573

Name of the Vulnerable Software and Affected Versions wolfSSL affected versions not specified Description An issue exists where chain intermediate certificates asserting CA:TRUE but lacking the keyCertSign key usage were accepted as signing CAs. This occurs because chain-supplied temporary CAs...

EUVD-2002-1390

Malware in sbrugna...

EUVD-2009-5093

Malware in sbrugna...

EUVD-2016-0829

Malware in sbrugna...

K14903688: BIG-IP SSL Profile OCSP Authentication security exposure

Security Advisory Description The BIG-IP system does not properly verify the revocation of intermediate CA certificates when querying Online Certificate Status Protocol OCSP servers and may allow unauthorized connections. This issue occurs when all of the following conditions are met: You have a...