CVE-2026-59650

Bouncy Castle for Java up to 1.84 (and Java LTS up to 2.73.11) is affected by CVE-2026-59650: MTI/A0 DH key exchange exponentiates an unvalidated peer value. This can impact confidentiality and integrity as described in the CVE, with overall severity listed as CRITICAL (CVSS 9.3). The issue is fi...

CVE-2026-59650 MTI/A0 DH agreement exponentiates unvalidated peer value

In Bouncy Castle for Java before 1.85, MTI/A0 DH agreement exponentiates unvalidated peer value. This issue also affects Bouncy Castle for Java LTS before 2.73.12...

EUVD-2026-52024

In Bouncy Castle for Java before 1.85, MTI/A0 DH agreement exponentiates unvalidated peer value. This issue also affects Bouncy Castle for Java LTS before 2.73.12...

RLSA-2026:47756 Important: openssh security update

OpenSSH is an SSH protocol implementation supported by a number of Linux, UNIX, and similar operating systems. It includes the core files necessary for both the OpenSSH client and server. Security Fixes: openssh: Local MITM of X11 forwarding via abstract UNIX socket pre-binding in Rocky Linux...

SUSE CVE-2026-55653

A flaw was found in OpenSSH. A malicious SSH server can exploit a double free vulnerability in the Diffie-Hellman Group Exchange DH-GEX client path. This occurs during FIPS Federal Information Processing Standards mode known-group validation when the client processes attacker-controlled DH-GEX...

RLSA-2026:47755 Moderate: openssh security update

OpenSSH is an SSH protocol implementation supported by a number of Linux, UNIX, and similar operating systems. It includes the core files necessary for both the OpenSSH client and server. Security Fixes: openssh: Local MITM of X11 forwarding via abstract UNIX socket pre-binding in Rocky Linux...

openssh: Double free in Red Hat Enterprise Linux versions of OpenSSH DH-GEX client path during FIPS known-group validation leads to client-side denial of service

A flaw was found in OpenSSH. A malicious SSH server can exploit a double free vulnerability in the Diffie-Hellman Group Exchange DH-GEX client path. This occurs during FIPS Federal Information Processing Standards mode known-group validation when the client processes attacker-controlled DH-GEX...

openssh: Double free in Red Hat Enterprise Linux versions of OpenSSH DH-GEX client path during FIPS known-group validation leads to client-side denial of service

A flaw was found in OpenSSH. A malicious SSH server can exploit a double free vulnerability in the Diffie-Hellman Group Exchange DH-GEX client path. This occurs during FIPS Federal Information Processing Standards mode known-group validation when the client processes attacker-controlled DH-GEX...

openssh: Double free in Red Hat Enterprise Linux versions of OpenSSH DH-GEX client path during FIPS known-group validation leads to client-side denial of service

A flaw was found in OpenSSH. A malicious SSH server can exploit a double free vulnerability in the Diffie-Hellman Group Exchange DH-GEX client path. This occurs during FIPS Federal Information Processing Standards mode known-group validation when the client processes attacker-controlled DH-GEX...

Moderate: openssh security update

OpenSSH is an SSH protocol implementation supported by a number of Linux, UNIX, and similar operating systems. It includes the core files necessary for both the OpenSSH client and server. Security Fixes: openssh: Local MITM of X11 forwarding via abstract UNIX socket pre-binding in AlmaLinux OpenS...

ALSA-2026:47755 Moderate: openssh security update

OpenSSH is an SSH protocol implementation supported by a number of Linux, UNIX, and similar operating systems. It includes the core files necessary for both the OpenSSH client and server. Security Fixes: openssh: Local MITM of X11 forwarding via abstract UNIX socket pre-binding in AlmaLinux OpenS...

ALSA-2026:47757 Important: openssh security update

OpenSSH is an SSH protocol implementation supported by a number of Linux, UNIX, and similar operating systems. It includes the core files necessary for both the OpenSSH client and server. Security Fixes: openssh: Local MITM of X11 forwarding via abstract UNIX socket pre-binding in AlmaLinux OpenS...

Security Bulletin: Vulnerability in Diffie-Hellman ciphers affects TS3100/TS3200 (CVE-2015-4000)

Summary The Logjam Attack on TLS connections using the Diffie-Hellman DH key exchange protocol affects TS3100/TS3200. Vulnerability Details CVEID: CVE-2015-4000 DESCRIPTION: The TLS protocol could allow a remote attacker to obtain sensitive information, caused by the failure to properly convey a...

OPENSUSE-SU-2026:21444-1 Security update for libssh

This update for libssh fixes the following issues: - CVE-2026-15370: stack buffer overflow in SFTP server longname construction bsc1272162. - CVE-2026-59843: denial of service via zero advertised channel packet size bsc1272164. - CVE-2026-59844: denial of service via oversized SFTP read length...

CVE-2026-64319 nvmet-auth: validate reply message payload bounds against transfer length

In the Linux kernel, the following vulnerability has been resolved: nvmet-auth: validate reply message payload bounds against transfer length nvmetauthreply accesses the variable-length rval array using attacker-controlled hl hash length and dhvlen DH value length fields without verifying they fi...

FFC-DH Peer Validation Uses Attacker-Supplied q

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SUSE-SU-2026:22760-1 Security update for libgcrypt

This update for libgcrypt fixes the following issue - CVE-2026-41989: crafted ECDH ciphertext can lead denial of service bsc1262684...

OESA-2026-2891 edk2 security update

EDK II is a modern, feature-rich, cross-platform firmware development environment for the UEFI and PI specifications. Security Fixes: Issue summary: When EVPPKEYderivesetpeer is called with a DHX X9.42 peer key, the peer key is not properly checked for the subgroup membership. Impact summary: A...

Pion DTLS: Denial of service via panic while parsing a crafted ECDHE_PSK ServerKeyExchange message

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openssh: Double free in Red Hat Enterprise Linux versions of OpenSSH DH-GEX client path during FIPS known-group validation leads to client-side denial of service

A flaw was found in OpenSSH. A malicious SSH server can exploit a double free vulnerability in the Diffie-Hellman Group Exchange DH-GEX client path. This occurs during FIPS Federal Information Processing Standards mode known-group validation when the client processes attacker-controlled DH-GEX...