Improper Signature Verification

Bouncy Castle for Java is vulnerable to Improper Signature Verification. The vulnerability is due to CMS.verifySignatures returning true for SignedData objects containing no signers, which allows an attacker to bypass signature verification and have unsigned data incorrectly treated as successful...

CVE-2026-77696

A flaw was found in OpenSSL. During SM2 signature generation, variable-time arithmetic operations are performed on secret values, creating an observable timing side-channel. An attacker capable of measuring signature generation times can collect timing data across multiple signing operations, whi...

CVE-2026-72897

A flaw was found in openssl. When a server replaces its security context during an active Transport Layer Security TLS handshake, it fails to update the internal capacity tracking for cryptographic signature algorithms. A remote peer can exploit this issue by advertising specific signature...

Security Bulletin: TSSC/IMC addresses multiple security vulnerabilities in Bouncy Castle for Java

Summary TSSC/IMC addresses multiple security vulnerabilities, listed in the CVEs below. Vulnerability Details CVEID:CVE-2026-12185 DESCRIPTION: In Bouncy Castle for Java before 1.85, BKS/UBER keystore allocates from untrusted lengths before integrity check. This issue also affects Bouncy Castle f...

Timing Attack

Overview Affected versions of this package are vulnerable to Timing Attack in SM2 signature generation, which performs variable time BIGNUM operations on both the secret nonce and the private key. An attacker can learn nonce information and recover the private key through a lattice or Hidden Numb...

AZL-105489 CVE-2026-77696 affecting package edk2 20240524git3e722403cd16-20

Issue summary: SM2 signature generation uses non-constant-time arithmetic on secret values, forming a timing side-channel. Impact summary: An attacker able to measure SM2 signing times may learn information about the per-signature secret nonce, which over many signatures can, via a lattice / Hidd...

AZL-105603 CVE-2026-77696 affecting package openvmm 0.1.0-1

Issue summary: SM2 signature generation uses non-constant-time arithmetic on secret values, forming a timing side-channel. Impact summary: An attacker able to measure SM2 signing times may learn information about the per-signature secret nonce, which over many signatures can, via a lattice / Hidd...

AZL-105519 CVE-2026-77696 affecting package kata-containers 4.1.0.kata0-1

Issue summary: SM2 signature generation uses non-constant-time arithmetic on secret values, forming a timing side-channel. Impact summary: An attacker able to measure SM2 signing times may learn information about the per-signature secret nonce, which over many signatures can, via a lattice / Hidd...

AZL-105366 CVE-2026-77696 affecting package openssl-fips-provider 3.1.2-2

Issue summary: SM2 signature generation uses non-constant-time arithmetic on secret values, forming a timing side-channel. Impact summary: An attacker able to measure SM2 signing times may learn information about the per-signature secret nonce, which over many signatures can, via a lattice / Hidd...

CVE-2026-72897: Out-of-bounds Write

Issue summary: A TLS server that calls SSLsetSSLCTX to switch a connection to a different SSLCTX part way through a handshake may access memory beyond the end of an internal array if the replacement context knows about more provider signature algorithms than the context the connection was created...

PT-2026-102913

The device's update mechanism includes conditions that allow unauthorized software packages to be accepted as authentic. During the boot process, the stock done function disables signature verification in the OPKG configuration before restoring optional packages from a writable, unsigned feed...

CVE-2026-100293: Improper Verification of Cryptographic Signature

In Anjvision YSSD‑RTMP‑H5 firmware version 3.3.2.4, both the local and cloud update mechanisms apply new firmware without any cryptographic verification, relying only on basic hashing. This design allows an attacker who can reach the update routine to introduce untrusted firmware images that the...

PT-2026-109057

Issue summary: SM2 signature generation uses non-constant-time arithmetic on secret values, forming a timing side-channel. Impact summary: An attacker able to measure SM2 signing times may learn information about the per-signature secret nonce, which over many signatures can, via a lattice / Hidd...

CVE-2026-77696

Issue summary: SM2 signature generation uses non-constant-time arithmetic on secret values, forming a timing side-channel. Impact summary: An attacker able to measure SM2 signing times may learn information about the per-signature secret nonce, which over many signatures can, via a lattice / Hidd...

UBUNTU-CVE-2026-77696

Issue summary: SM2 signature generation uses non-constant-time arithmetic on secret values, forming a timing side-channel. Impact summary: An attacker able to measure SM2 signing times may learn information about the per-signature secret nonce, which over many signatures can, via a lattice / Hidd...

CVE-2026-91191: Improper Verification of Cryptographic Signature

The device's update mechanism includes conditions that allow unauthorized software packages to be accepted as authentic. During the boot process, the stock done function disables signature verification in the OPKG configuration before restoring optional packages from a writable, unsigned feed...

Linux Distros Unpatched Vulnerability : CVE-2026-100888

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - A weakness has been identified in Trusted Domain Project OpenDKIM up to 2.11.0. This affects the function dkimcanonselecthdrs of the file libopendkim/dkim-canon...

Oracle Linux 10 : python-cryptography (ELSA-2026-71658)

The remote Oracle Linux 10 host has a package installed that is affected by a vulnerability as referenced in the ELSA-2026-71658 advisory. 43.0.0-4 - Fix CVE-2026-69249: add X.509 signature validation budget Tenable has extracted the preceding description block directly from the Oracle Linux...

Timing Side-Channel in SM2 Signature Generation

Issue summary: SM2 signature generation uses non-constant-time arithmetic on secret values, forming a timing side-channel. Impact summary: An attacker able to measure SM2 signing times may learn information about the per-signature secret nonce, which over many signatures can, via a lattice / Hidd...

SUSE CVE-2026-100888

A weakness has been identified in Trusted Domain Project OpenDKIM up to 2.11.0. This affects the function dkimcanonselecthdrs of the file libopendkim/dkim-canon.c of the component DKIM Signature Header Selection. Executing a manipulation of the argument h can lead to out-of-bounds write. The atta...