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OpenSSL Patches High-Severity Vulnerability Found With AI

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The latest OpenSSL releases patch 18 vulnerabilities, including a high-severity issue that could allow remote code execution.

The high-severity vulnerability, tracked as CVE-2026-45447, is a heap user-after-free bug in a function used for PKCS#7 (Public-Key Cryptography Standard #7) verification.

Discovered by a Calif researcher in collaboration with Claude AI and Anthropic Research, the bug can be triggered using a specially crafted PKCS#7 or S/MIME signed message during PKCS#7 signature verification.

“When processing a PKCS#7 or S/MIME signed message, if the SignedData digestAlgorithms field is present as an empty ASN.1 SET, OpenSSL may incorrectly free a caller-owned BIO during PKCS7_verify(). A subsequent use of the BIO by the calling application results in a use-after-free condition,” OpenSSL developers explained.

Exploitation of the vulnerability can result in heap corruption, process crashes, and possibly in remote code execution.

The moderate-severity flawspatched in OpenSSL can be exploited to decrypt encrypted communications, forge arbitrary...

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