CVE Watch30 jul 2026

CVE-2024-14041

In Bouncy Castle for Java from 1.73 to before 1.78, three ML-KEM (CRYSTALS-Kyber) routines divided secret-derived polynomial coefficients by

CVSS

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Sin CVSS

EPSS

0.3%

p20

KEV

—

Exploit Today

0-100

Publicado: 28 jul 2026 · Última mod.: 30 jul 2026 · CWE-208

EPSS · 30d

0.3%EPSS · 30 días0.3%

2026-07-282026-08-04

Descripción técnica

In Bouncy Castle for Java from 1.73 to before 1.78, three ML-KEM (CRYSTALS-Kyber) routines divided secret-derived polynomial coefficients by the modulus q: Poly.toMsg, which decodes the decrypted message, and the ciphertext compression routines Poly.compressPoly and PolyVec.compressPolyVec. An attacker able to measure the timing of a large number of decapsulations performed with the same long-term private key can recover that key. These are the KyberSlash1 (Poly.toMsg) and KyberSlash2 (ciphertext compression) divisions. Compression performed during encapsulation operates on values that become the public ciphertext and is not affected.

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