libssh: libssh: integrity downgrade via OpenSSL AES-GCM tag verification

A flaw was found in libssh. Incorrect AES-GCM finalization checks in builds using the OpenSSL backend can effectively remove integrity protection, allowing an in-path attacker to modify plaintext on the wire without detection...

USN-8699-1 libssh vulnerabilities

It was discovered that libssh had a stack buffer overflow in its SFTP server when constructing directory listing entries for long filenames. An attacker could possibly use this issue to cause libssh to crash or execute arbitrary code. This issue only affected Ubuntu 26.04 LTS. CVE-2026-15370 It w...

CVE-2026-81020

wolfEngine before 1.4.1 generates the 8-byte explicit AES-GCM nonce once when the TLS write key is set and never increments it per record. As a result every TLS 1.2 and DTLS 1.2 AES-GCM record within a connection is encrypted under an identical key and nonce pair. Reusing a GCM key and nonce...

CVE-2026-81019

wolfProvider before 1.2.2 generates the 8-byte explicit AES-GCM nonce once when the TLS write key is set and never increments it per record. As a result every TLS 1.2 and DTLS 1.2 AES-GCM record within a connection is encrypted under an identical key and nonce pair. Reusing a GCM key and nonce...

CVE-2026-81020 wolfEngine reuses the AES-GCM nonce on every TLS 1.2 / DTLS 1.2 record

wolfEngine before 1.4.1 generates the 8-byte explicit AES-GCM nonce once when the TLS write key is set and never increments it per record. As a result every TLS 1.2 and DTLS 1.2 AES-GCM record within a connection is encrypted under an identical key and nonce pair. Reusing a GCM key and nonce...

EUVD-2026-67737

wolfEngine before 1.4.1 generates the 8-byte explicit AES-GCM nonce once when the TLS write key is set and never increments it per record. As a result every TLS 1.2 and DTLS 1.2 AES-GCM record within a connection is encrypted under an identical key and nonce pair. Reusing a GCM key and nonce...

CVE-2026-81020 wolfEngine reuses the AES-GCM nonce on every TLS 1.2 / DTLS 1.2 record

wolfEngine before 1.4.1 generates the 8-byte explicit AES-GCM nonce once when the TLS write key is set and never increments it per record. As a result every TLS 1.2 and DTLS 1.2 AES-GCM record within a connection is encrypted under an identical key and nonce pair. Reusing a GCM key and nonce...

CVE-2026-81020

wolfEngine before 1.4.1 generates the 8-byte explicit AES-GCM nonce only once when the TLS write key is set and never increments it per record. Consequently, every TLS 1.2 and DTLS 1.2 AES-GCM record within a connection is encrypted under an identical key and nonce pair. GCM nonce reuse discloses...

CVE-2026-81019 wolfProvider reuses the AES-GCM nonce on every TLS 1.2 / DTLS 1.2 record

wolfProvider before 1.2.2 generates the 8-byte explicit AES-GCM nonce once when the TLS write key is set and never increments it per record. As a result every TLS 1.2 and DTLS 1.2 AES-GCM record within a connection is encrypted under an identical key and nonce pair. Reusing a GCM key and nonce...

CVE-2026-81019 wolfProvider reuses the AES-GCM nonce on every TLS 1.2 / DTLS 1.2 record

wolfProvider before 1.2.2 generates the 8-byte explicit AES-GCM nonce once when the TLS write key is set and never increments it per record. As a result every TLS 1.2 and DTLS 1.2 AES-GCM record within a connection is encrypted under an identical key and nonce pair. Reusing a GCM key and nonce...

EUVD-2026-67736

wolfProvider before 1.2.2 generates the 8-byte explicit AES-GCM nonce once when the TLS write key is set and never increments it per record. As a result every TLS 1.2 and DTLS 1.2 AES-GCM record within a connection is encrypted under an identical key and nonce pair. Reusing a GCM key and nonce...

CVE-2026-81019

wolfProvider (by wolfSSL) versions before 1.2.2 generate the 8-byte explicit AES-GCM nonce once when the TLS write key is set and never increment it per record. Consequently, every TLS 1.2 and DTLS 1.2 AES-GCM record in a given connection is encrypted with an identical key and nonce pair. Reusing...

CVE-2026-81019: Reusing a Nonce, Key Pair in Encryption

wolfProvider before 1.2.2 generates the 8-byte explicit AES-GCM nonce once when the TLS write key is set and never increments it per record. As a result every TLS 1.2 and DTLS 1.2 AES-GCM record within a connection is encrypted under an identical key and nonce pair. Reusing a GCM key and nonce...

PT-2026-83143

Name of the Vulnerable Software and Affected Versions wolfProvider versions prior to 1.2.2 Description The software generates the 8-byte explicit AES-GCM nonce only once when the TLS write key is set and fails to increment it for each record. Consequently, every TLS 1.2 and DTLS 1.2 AES-GCM recor...

PT-2026-83144

Name of the Vulnerable Software and Affected Versions wolfEngine versions prior to 1.4.1 Description wolfEngine fails to increment the 8-byte explicit AES-GCM nonce for each record, generating it only once when the TLS write key is set. Consequently, all TLS 1.2 and DTLS 1.2 AES-GCM records withi...

CVE-2026-81020: Reusing a Nonce, Key Pair in Encryption

wolfEngine before 1.4.1 generates the 8-byte explicit AES-GCM nonce once when the TLS write key is set and never increments it per record. As a result every TLS 1.2 and DTLS 1.2 AES-GCM record within a connection is encrypted under an identical key and nonce pair. Reusing a GCM key and nonce...

openssl: Incorrect Tag Processing for Empty Messages in AES-GCM-SIV and AES-SIV modes

A flaw was found in OpenSSL. The implementations of AES-SIV Advanced Encryption Standard - SIV and AES-GCM-SIV Advanced Encryption Standard - Galois/Counter Mode - SIV incorrectly process authentication tags for empty messages. This vulnerability allows a remote attacker to forge empty messages...

openssl: Incorrect Tag Processing for Empty Messages in AES-GCM-SIV and AES-SIV modes

A flaw was found in OpenSSL. The implementations of AES-SIV Advanced Encryption Standard - SIV and AES-GCM-SIV Advanced Encryption Standard - Galois/Counter Mode - SIV incorrectly process authentication tags for empty messages. This vulnerability allows a remote attacker to forge empty messages...

OESA-2026-3476 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...

CVE-2026-50577

ePA 3.x Integration implements the authorization workflow and writes Medical Information Objects to Germany's electronic patient record. Prior to 1.3.0, ePA 3.x Integration leaves requestcounter unchanged in app/vau/VAUProtokoll.py while constructing VAU messages. The frozen client request counte...