Timing Attack Affecting org.bouncycastle:bcprov-debug-jdk14 package, versions [1.73,1.78)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published29 Jul 2026
- disclosed28 Jul 2026
- creditUnknown
Introduced: 28 Jul 2026
NewCVE-2024-14041 (opens in a new tab)How to fix?
Upgrade org.bouncycastle:bcprov-debug-jdk14 to version 1.78 or higher.
Overview
Affected versions of this package are vulnerable to Timing Attack in the ML-KEM Poly.toMsg, Poly.compressPoly, and PolyVec.compressPolyVec routines. An attacker can recover a long-term private key by sending ciphertexts and measuring the time taken by repeated decapsulation operations that execute secret-dependent divisions by the Kyber modulus q on secret-derived polynomial coefficients. The flaw affects Kyber decapsulation and ciphertext compression code in org.bouncycastle.pqc.crypto.crystals.kyber, where the coefficient-to-message and coefficient-compression logic leaks information through variable-time arithmetic. This compromises private-key confidentiality in deployments that process many decapsulations using the same key.