Nuvoton ECHD Key Security Update

Nuvoton has informed HP of a potential security vulnerability identified in Nuvoton TPM NPCT7xx models used in certain HP PC products, which might allow information disclosure. Nuvoton has released firmware mitigation for the potential vulnerability. HP has identified affected platforms and...

CVE-2026-6923

A side-channel attack, which requires a physical presence to the TPM, can lead to extraction of an Elliptic Curve Diffie-Hellman ECDH key...

EUVD-2026-30328

A side-channel attack, which requires a physical presence to the TPM, can lead to extraction of an Elliptic Curve Diffie-Hellman ECDH key...

CVE-2026-6923 Nuvoton - CWE-1300: Improper Protection of Physical Side Channels

A side-channel attack, which requires a physical presence to the TPM, can lead to extraction of an Elliptic Curve Diffie-Hellman ECDH key...

CVE-2026-6923

A side-channel attack, which requires a physical presence to the TPM, can lead to extraction of an Elliptic Curve Diffie-Hellman ECDH key...

CVE-2026-6923

CVE-2026-6923 describes a side-channel vulnerability affecting TPMs where physical access is required to extract an Elliptic Curve Diffie-Hellman (ECDH) key. The vulnerability stems from a physical side channel to the TPM that can lead to key leakage. Documented impact is confidentiality loss (ex...

PT-2026-40966

A side-channel attack, which requires a physical presence to the TPM, can lead to extraction of an Elliptic Curve Diffie-Hellman ECDH key...

Nuvoton NPCT7xx 安全漏洞

Nuvoton NPCT7xx is a series of TPM security controllers developed by Nuvoton Corporation in Taiwan, China, aimed at trusted computing and platform security management. Nuvoton NPCT7xx has security vulnerabilities, which stem from side-channel attacks and may lead to the extraction of elliptic cur...

EUVD-2026-27657

Keylime has a hardcoded attestation challenge nonce that allows replay attacks...

GHSA-WC6P-4GWJ-JCR8 Duplicate Advisory: Keylime has a hardcoded attestation challenge nonce that allows replay attacks

Duplicate Advisory This advisory has been withdrawn because it is a duplicate of GHSA-q8w6-w55c-ccv5. This link is maintained to preserve external references. Original Description A flaw was found in Keylime. An attacker with root access on an enrolled monitored machine, where the Keylime agent...

Duplicate Advisory: Keylime has a hardcoded attestation challenge nonce that allows replay attacks

Duplicate Advisory This advisory has been withdrawn because it is a duplicate of GHSA-q8w6-w55c-ccv5. This link is maintained to preserve external references. Original Description A flaw was found in Keylime. An attacker with root access on an enrolled monitored machine, where the Keylime agent...

Use of Predictable Algorithm in Random Number Generator

Overview keylime is a TPM-based key bootstrapping and system integrity measurement system for cloud Affected versions of this package are vulnerable to Use of Predictable Algorithm in Random Number Generator in the generatechallenge method. An attacker can evade detection and bypass security...

CVE-2026-6420

A flaw was found in Keylime. An attacker with root access on an enrolled monitored machine, where the Keylime agent runs, can exploit a vulnerability in the Keylime verifier. The verifier uses a hardcoded challenge nonce for Trusted Platform Module TPM quote attestation instead of a...

CVE-2026-6420

CVE-2026-6420 affects Keylime: a flaw in the verifier uses a hardcoded TPM quote nonce instead of a cryptographically random value. An attacker with root on an enrolled monitored machine where the Keylime agent runs can stockpile valid TPM quotes and replay them to evade detection after compromis...

CVE-2026-6420

A flaw was found in Keylime. An attacker with root access on an enrolled monitored machine, where the Keylime agent runs, can exploit a vulnerability in the Keylime verifier. The verifier uses a hardcoded challenge nonce for Trusted Platform Module TPM quote attestation instead of a...

CVE-2026-6420 Keylime: keylime: security bypass due to hardcoded tpm quote nonce

A flaw was found in Keylime. An attacker with root access on an enrolled monitored machine, where the Keylime agent runs, can exploit a vulnerability in the Keylime verifier. The verifier uses a hardcoded challenge nonce for Trusted Platform Module TPM quote attestation instead of a...

CVE-2026-6420 Keylime: keylime: security bypass due to hardcoded tpm quote nonce

A flaw was found in Keylime. An attacker with root access on an enrolled monitored machine, where the Keylime agent runs, can exploit a vulnerability in the Keylime verifier. The verifier uses a hardcoded challenge nonce for Trusted Platform Module TPM quote attestation instead of a...

CVE-2026-6420

A flaw was found in Keylime. An attacker with root access on an enrolled monitored machine, where the Keylime agent runs, can exploit a vulnerability in the Keylime verifier. The verifier uses a hardcoded challenge nonce for Trusted Platform Module TPM quote attestation instead of a...

Keylime 安全漏洞

Keylime is an open-source scalable trust system developed using TPM technology. Keylime has a security vulnerability, which stems from the verifier using hardcoded challenge random numbers for TPM reference proofs instead of encrypted random values. This allows attackers to accumulate valid TPM...

PT-2026-37443

Name of the Vulnerable Software and Affected Versions Keylime affected versions not specified Description A flaw in the Keylime verifier allows an attacker with root access on an enrolled monitored machine to bypass security. The verifier uses a hardcoded challenge nonce for Trusted Platform Modu...