One (Thread) Can Keep a (PRNG) Secret, but Not Two

We present a novel, practical attack on the IPv6 Fragment ID generation algorithm of XNU, which is the kernel used by Apple products such as macOS and iOS. This attack exploits a race-condition vulnerability in the algorithm's pseudorandom number generator PRNG to cryptanalytically break, learn t...

CVE-2026-44053

Netatalk 1.5.0 through 4.2.2 uses a broken cryptographic algorithm in the DHCAST128 UAM, which allows a remote attacker to obtain authentication credentials or impersonate a user via cryptanalytic attack...

CVE-2026-44053

Netatalk 1.5.0 through 4.2.2 uses a broken cryptographic algorithm in the DHCAST128 UAM, which allows a remote attacker to obtain authentication credentials or impersonate a user via cryptanalytic attack...

CVE-2025-65849

A cryptanalytic break in Altcha Proof-of-Work obfuscation mode version 0.8.0 and later allows for remote visitors to recover the Proof-of-Work nonce in constant time via mathematical deduction. NOTE: this is disputed by the Supplier because the product's objective is "to discourage automated...

GHSA-MPMC-QCHH-R9Q8 Altcha Proof-of-Work obfuscation mode cryptanalytic break

A cryptanalytic break in Altcha Proof-of-Work obfuscation mode version 0.8.0 and later allows for remote visitors to recover the Proof-of-Work nonce in constant time via mathematical deduction...

EUVD-2025-201806

A cryptanalytic break in Altcha Proof-of-Work obfuscation mode version 0.8.0 and later allows for remote visitors to recover the Proof-of-Work nonce in constant time via mathematical deduction...

Altcha Proof-of-Work obfuscation mode cryptanalytic break

A cryptanalytic break in Altcha Proof-of-Work obfuscation mode version 0.8.0 and later allows for remote visitors to recover the Proof-of-Work nonce in constant time via mathematical deduction...

CVE-2025-65849

A cryptanalytic break in Altcha Proof-of-Work obfuscation mode version 0.8.0 and later allows for remote visitors to recover the Proof-of-Work nonce in constant time via mathematical deduction. NOTE: this is disputed by the Supplier because the product's objective is "to discourage automated...

CVE-2025-65849

A cryptanalytic break in Altcha Proof-of-Work obfuscation mode version 0.8.0 and later allows for remote visitors to recover the Proof-of-Work nonce in constant time via mathematical deduction. NOTE: this is disputed by the Supplier because the product's objective is "to discourage automated...

PT-2025-49588

A cryptanalytic break in Altcha Proof-of-Work obfuscation mode version 0.8.0 and later allows for remote visitors to recover the Proof-of-Work nonce in constant time via mathematical deduction...

EUVD-2017-10728

Malware in sbrugna...

EUVD-2001-0378

Malware in sbrugna...

1965 Cryptanalysis Training Workbook Released by the NSA

In the early 1960s, National Security Agency cryptanalyst and cryptanalysis instructor Lambros D. Callimahos coined the term "Stethoscope" to describe a diagnostic computer program used to unravel the internal structure of pre-computer ciphertexts. The term appears in the newly declassified...

CVE-2017-1712

"A vulnerability in the TLS protocol implementation of the Domino server could allow an unauthenticated, remote attacker to access sensitive information, aka a Return of Bleichenbacher's Oracle Threat ROBOT attack. An attacker could iteratively query a server running a vulnerable TLS stack...

Non-Adaptive Cryptanalytic Time-Space Lower Bounds Via a Shearer-Like Inequality for Permutations

Whitepaper called Non-Adaptive Cryptanalytic Time-Space Lower Bounds Via A Shearer-Like Inequality For Permutations...

Cisco ACI Multi-Site CloudSec Encryption Information Disclosure (cisco-sa-aci-cloudsec-enc-Vs5Wn2sX)

According to its self-reported version, Cisco NX-OS System Software in ACI Mode is affected by an information disclosure vulnerability. The vulnerability affects Cisco Nexus 9000 Series Fabric Switches in Application Centric Infrastructure ACI mode of Multi-Site that are part of a Multi-Site...

CVE-2023-20185

A vulnerability in the Cisco ACI Multi-Site CloudSec encryption feature of Cisco Nexus 9000 Series Fabric Switches in ACI mode could allow an unauthenticated, remote attacker to read or modify intersite encrypted traffic. This vulnerability is due to an issue with the implementation of the cipher...

Cisco ACI Multi-Site CloudSec Encryption Information Disclosure Vulnerability

A vulnerability in the Cisco ACI Multi-Site CloudSec encryption feature of Cisco Nexus 9000 Series Fabric Switches in ACI mode could allow an unauthenticated, remote attacker to read or modify intersite encrypted traffic. This vulnerability is due to an issue with the implementation of the cipher...

Cisco Firepower Threat Defense Software SSL Decryption Policy Bleichenbacher Attack (cisco-sa-ftd-tls-bb-rCgtmY2)

A vulnerability in the TLS handler of Cisco Firepower Threat Defense FTD Software could allow an unauthenticated, remote attacker to gain access to sensitive information. This vulnerability is due to improper implementation of countermeasures against a Bleichenbacher attack on a device that uses...

CVE-2022-20940

A vulnerability in the TLS handler of Cisco Firepower Threat Defense FTD Software could allow an unauthenticated, remote attacker to gain access to sensitive information. This vulnerability is due to improper implementation of countermeasures against a Bleichenbacher attack on a device that uses...