CVE-2023-31762

Weak security in the transmitter of Digoo DG-HAMB Smart Home Security System v1.0 allows attackers to gain full access to the system via a code replay attack...

CVE-2009-4409

The 1 CHAP and 2 MS-CHAP-V2 authentication capabilities in the PPP Access Concentrator PPPAC function in Internet Initiative Japan SEIL/B1 firmware 1.00 through 2.52 use the same challenge for each authentication attempt, which allows remote attackers to bypass authentication via a replay attack...

CVE-2019-20626

The remote keyless system on Honda HR-V 2017 vehicles sends the same RF signal for each door-open request, which might allow a replay attack...

CVE-2023-31200

PTC Vuforia Studio does not require a token; this could allow an attacker with local access to perform a cross-site request forgery attack or a replay attack...

CVE-2021-41138

Frontier is Substrate's Ethereum compatibility layer. In the newly introduced signed Frontier-specific extrinsic for pallet-ethereum, a large part of transaction validation logic was only called in transaction pool validation, but not in block execution. Malicious validators can take advantage of...

CVE-2022-27254

The remote keyless system on Honda Civic 2018 vehicles sends the same RF signal for each door-open request, which allows for a replay attack, a related issue to CVE-2019-20626...

PT-2026-23804

A flaw was found in Libsoup. The server-side digest authentication implementation in the SoupAuthDomainDigest class does not properly track issued nonces or enforce the required incrementing nonce-count nc attribute. This vulnerability allows a remote attacker to capture a single valid...

CVE-2025-61739

Due to Nonce reuse, attackers can perform reply attack or decrypt captured packets...

CVE-2025-61739

Due to Nonce reuse, attackers can perform reply attack or decrypt captured packets...

CVE-2025-61739

CVE-2025-61739 concerns nonce reuse that enables a replay attack or decryption of captured packets. Documents identify the affected products as Johnson Controls IQ Panels2, IQ Panels2+, IQHub, IQPanel 4, and PowerG, with the issue rooted in nonce reuse and/or weak RNG affecting confidentiality an...

CVE-2025-61739 Johnson Controls IQ Panels2, 2+, IQHub, IQPanel 4, PowerG reusing a nonce, key pair in encryption

Due to Nonce reuse, attackers can perform reply attack or decrypt captured packets...

EUVD-2025-204703

Due to Nonce reuse, attackers can perform reply attack or decrypt captured packets...

Mozilla Firefox < 3.5.6

The version of Firefox installed on the remote macOS or Mac OS X host is prior to 3.5.6. It is, therefore, affected by a vulnerability as referenced in the mfsa2009-68 advisory. - Mozilla Firefox before 3.0.16 and 3.5.x before 3.5.6, and SeaMonkey before 2.0.1, allows remote attackers to send...

CVE-2025-9612

An issue was discovered in the PCI Express PCIe Integrity and Data Encryption IDE specification, where insufficient guidance on Transaction Layer Packet TLP ordering and tag uniqueness may allow encrypted packets to be replayed or reordered without detection. This can enable local or physical...

CVE-2025-68113 ALTCHA Proof-of-Work Vulnerable to Challenge Splicing and Replay

ALTCHA is privacy-first software for captcha and bot protection. A cryptographic semantic binding flaw in ALTCHA libraries allows challenge payload splicing, which may enable replay attacks. The HMAC signature does not unambiguously bind challenge parameters to the nonce, allowing an attacker to...

CVE-2025-68113

CVE-2025-68113 (ALTCHA) describes a cryptographic semantic binding flaw in ALTCHA libraries where the HMAC does not unambiguously bind challenge parameters to the nonce, enabling potential replay of previously solved challenges depending on server-side handling. Affected components include ALTCHA...

CVE-2025-68113 ALTCHA Proof-of-Work Vulnerable to Challenge Splicing and Replay

ALTCHA is privacy-first software for captcha and bot protection. A cryptographic semantic binding flaw in ALTCHA libraries allows challenge payload splicing, which may enable replay attacks. The HMAC signature does not unambiguously bind challenge parameters to the nonce, allowing an attacker to...

Improper Verification of Cryptographic Signature

Overview altcha is an A lightweight library for creating and verifying ALTCHA challenges. Affected versions of this package are vulnerable to Improper Verification of Cryptographic Signature via the HMAC computation. An attacker can bypass intended challenge expiration and reuse previously solved...

ALTCHA Proof-of-Work Vulnerable to Challenge Splicing and Replay

A cryptographic semantic binding flaw in ALTCHA libraries allows challenge payload splicing, which may enable replay attacks. The HMAC signature does not unambiguously bind challenge parameters to the nonce, allowing an attacker to reinterpret a valid proof-of-work submission with a modified...

Authentication Bypass

Jenkins SAML Plugin is vulnerable to Authentication Bypass. The vulnerability is due to the absence of a replay cache in the SAML authentication flow, allowing attackers who capture SAML authentication messages to replay them and authenticate to Jenkins as the affected user...