JLSEC-2026-247 Null pointer dereference in PKCS12 parsing

Issue summary: Processing a maliciously formatted PKCS12 file may lead OpenSSL to crash leading to a potential Denial of Service attack Impact summary: Applications loading files in the PKCS12 format from untrusted sources might terminate abruptly. A file in PKCS12 format can contain certificates...

UBUNTU-CVE-2026-41676

rust-openssl provides OpenSSL bindings for the Rust programming language. From 0.9.27 to before 0.10.78, Deriver::derive and PkeyCtxRef::derive sets len = buf.len and passes it as the in/out length to EVPPKEYderive, relying on OpenSSL to honor it. On OpenSSL 1.1.x, X25519, X448, DH and HKDF-extra...

UBUNTU-CVE-2026-41681

rust-openssl provides OpenSSL bindings for the Rust programming language. From 0.10.39 to before 0.10.78, EVPDigestFinal always writes EVPMDCTXsizectx to the out buffer. If out is smaller than that, MdCtxRef::digestfinal writes past its end, usually corrupting the stack. This is reachable from sa...

GHSA-GHM9-CR32-G9QJ rust-openssl: rustMdCtxRef::digest_final() writes past caller buffer with no length check

EVPDigestFinal always writes EVPMDCTXsizectx to the out buffer. If out is smaller than that, MdCtxRef::digestfinal writes past its end, usually corrupting the stack. This is reachable from safe Rust...

PT-2026-29186

Name of the Vulnerable Software and Affected Versions vcpkg versions prior to 3.6.13 Description vcpkg, a C/C++ package manager, exhibited a configuration issue in its Windows builds of OpenSSL. Specifically, the openssldir setting was configured to a path on the build machine. This configuration...

CVE-2026-27448

pyOpenSSL is a Python wrapper around the OpenSSL library. Starting in version 0.14.0 and prior to version 26.0.0, if a user provided callback to settlsextservernamecallback raised an unhandled exception, this would result in a connection being accepted. If a user was relying on this callback for...

CVE-2026-27459

pyOpenSSL is a Python wrapper around the OpenSSL library. Starting in version 22.0.0 and prior to version 26.0.0, if a user provided callback to setcookiegeneratecallback returned a cookie value greater than 256 bytes, pyOpenSSL would overflow an OpenSSL provided buffer. Starting in version 26.0....

OESA-2026-1558 libssh security update

The ssh library was designed to be used by programmers needing a working SSH implementation by the mean of a library. The complete control of the client is made by the programmer. With libssh, you can remotely execute programs, transfer files, use a secure and transparent tunnel for your remote...

Nutanix AHV : Multiple Vulnerabilities (NXSA-AHV-11.0.0.2)

The version of AHV installed on the remote host is prior to 11.0.0.2. It is, therefore, affected by multiple vulnerabilities as referenced in the NXSA-AHV-11.0.0.2 advisory. - A flaw was found in libssh when using the ChaCha20 cipher with the OpenSSL library. If an attacker manages to exhaust the...

RHSA-2026:1472 Red Hat Security Advisory: openssl security update

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Missing Cryptographic Step

Overview Affected versions of this package are vulnerable to Missing Cryptographic Step that exposes the final 1-15 bytes of a message when the low-level OCB API is used directly with AES-NI or other hardware accelerated code paths. Common implementations of openssl using EVP are not vulnerable...

OpenSSL security vulnerabilities

OpenSSL is an open-source encryption library developed by the OpenSSL team that enables secure implementation of Secure Sockets Layer SSLv2/v3 and Secure Transport Layer TLSv1 protocols. This product supports various encryption algorithms, including symmetric ciphers, hash algorithms, and secure...

RHSA-2026:0794 Red Hat Security Advisory: openssl and openssl-fips-provider security update

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Astra Linux – Vulnerability in libssh

A flaw was discovered in libssh when using the ChaCha20 cipher with the OpenSSL library. If an attacker manages to exhaust the heap space, this error is not detected, and libssh may use a partially initialized cipher context. This occurs because the OpenSSL error code returns aliases with the SSH...

CLSA-2025-1765804754 openssl: Fix of CVE-2025-9230

CVE-2025-9230: fix out-of-bounds read of unwrapped key size that may trigger a crash...

RHSA-2025:22794 Red Hat Security Advisory: openssl security update

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JLSEC-2025-332 A flaw was found in libssh when using the ChaCha20 cipher with the OpenSSL library

A flaw was found in libssh when using the ChaCha20 cipher with the OpenSSL library. If an attacker manages to exhaust the heap space, this error is not detected and may lead to libssh using a partially initialized cipher context. This occurs because the OpenSSL error code returned aliases with th...

SUSE CVE-2025-65493

NULL pointer dereference in src/coapopenssl.c in OISM libcoap 4.3.5 allows remote attackers to cause a denial of service via a crafted DTLS/TLS connection that triggers BIOgetdata to return NULL...

SUSE CVE-2025-65496

NULL pointer dereference in coapdtlsgeneratecookie in src/coapopenssl.c in OISM libcoap 4.3.5 allows remote attackers to cause a denial of service via a crafted DTLS handshake that triggers SSLgetSSLCTX to return NULL...

EUVD-2025-198708

NULL pointer dereference in coapdtlsgeneratecookie in src/coapopenssl.c in OISM libcoap 4.3.5 allows remote attackers to cause a denial of service via a crafted DTLS handshake that triggers SSLgetSSLCTX to return NULL...