CVE-2026-54872

Issue summary: The generic elliptic-curve scalar multiplication used for ECDSA and SM2 signature operations with curves that do not have a dedicated implementation leaks information about the secret nonce through timing. Impact summary: An attacker able to measure signing times may learn...

CVE-2026-77696: Observable Timing Discrepancy

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-2026-54875: Observable Timing Discrepancy

Issue summary: A non-constant-time optimized implementation of scalar point multiplication is used for SM2 private key operations on ARM64 and RISC-V platforms. Impact summary: An attacker able to measure the time taken by, or to observe the cache-line access pattern of SM2 signing or decryption ...

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...

PT-2026-102652

Name of the Vulnerable Software and Affected Versions OpenSSL versions 4.0 through 4.0.2 OpenSSL versions 3.6 through 3.6.4 OpenSSL versions 3.5 through 3.5.8 OpenSSL versions 3.4 through 3.4.7 Description On ARM64 and RISC-V platforms, the SM2 curve utilizes a scalar multiplication implementatio...

PT-2026-102657

Name of the Vulnerable Software and Affected Versions The product name cannot be determined. affected versions not specified Description SM2 signature generation uses non-constant-time arithmetic on secret values, creating a timing side-channel. The process computes the signature value using...

CVE-2026-77696: Observable Timing Discrepancy

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-2026-54872

Issue summary: The generic elliptic-curve scalar multiplication used for ECDSA and SM2 signature operations with curves that do not have a dedicated implementation leaks information about the secret nonce through timing. Impact summary: An attacker able to measure signing times may learn...

Linux Distros Unpatched Vulnerability : CVE-2026-77696

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - Issue summary: SM2 signature generation uses non-constant-time arithmetic on secret values, forming a timing side-channel. Impact summary: An attacker able to...

OpenSSL -- Multiple vulnerabilities

The OpenSSL project reports: DTLS Retransmits Handshake Messages From a Stale Buffer Offset CVE-2026-84782 High Use-After-Free in X.509 Extension Cache Under Concurrent Use CVE-2026-84783 Moderate Excessive Memory Allocation in Relative CRLDP Processing CVE-2026-35189 Low QUIC Unvalidated...

Linux Distros Unpatched Vulnerability : CVE-2026-54875

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - Issue summary: A non-constant-time optimized implementation of scalar point multiplication is used for SM2 private key operations on ARM64 and RISC-V platforms...

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...

Timing Side-Channel in Scalar Multiplication for Non-NIST EC Curves

Issue summary: The generic elliptic-curve scalar multiplication used for ECDSA and SM2 signature operations with curves that do not have a dedicated implementation leaks information about the secret nonce through timing. Impact summary: An attacker able to measure signing times may learn...

Non-Constant-Time SM2 Scalar Multiplication on ARM64 and RISC-V

Issue summary: A non-constant-time optimized implementation of scalar point multiplication is used for SM2 private key operations on ARM64 and RISC-V platforms. Impact summary: An attacker able to measure the time taken by, or to observe the cache-line access pattern of SM2 signing or decryption ...

PT-2026-102981

Name of the Vulnerable Software and Affected Versions oauthlib affected versions not specified Description A timing side-channel exists in the PKCE implementation of the Authorization Code Grant flow. The functions code challenge method plain and code challenge method s256 in the file...

UBUNTU-CVE-2026-54872

Issue summary: The generic elliptic-curve scalar multiplication used for ECDSA and SM2 signature operations with curves that do not have a dedicated implementation leaks information about the secret nonce through timing. Impact summary: An attacker able to measure signing times may learn...

GAZEleak: Passcode Inference against Eye-Tracking XR Devices through External Observation

Mixed-reality headsets such as Apple Vision Pro replace the touch screen with gaze-as-pointer interaction: the wearer looks at a target and confirms with an air pinch. Because the display is inside the headset and the eye tracker is walled off from third-party software, such input is widely assum...

OT-PCA: New Key-Recovery Plaintext-Checking Oracle Based Side-Channel Attacks on HQC with Offline Templates

In this paper, we introduce OT-PCA, a novel approach for conducting Plaintext-Checking PC oracle based side-channel attacks, specifically designed for Hamming Quasi-Cyclic HQC. By calling the publicly accessible HQC decoder, we build offline templates that enable efficient extraction of soft...

Application Agnostic EM Side-Channel Emanations of the FPGA Clock Distribution Network

Electromagnetic side channels have been extensively utilized in non-invasive attacks or analyses to extract critical information from deployed systems. Most of the attacks or analyses are typically executed on cryptographic algorithms under the assumption that the underlying implementation remain...