PT-2026-52560 · Wolfssl · Wolfssl

007Bsd · Published 2026-06-25 · Updated 2026-06-25 · CVE-2026-10097

NVD

CVSS v4.0

6.3

Medium

Base vector

AV:N/AC:H/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

ML-KEM-1024 x64 AVX2 implicit rejection failure in the Fujisaki-Okamoto transform breaks IND-CCA2 security, allowing decapsulation to deviate from the implicit-rejection behavior required by the standard. The AVX2 constant-time ciphertext comparison used during decapsulation never compared the final 32-byte block of the 1568-byte ML-KEM-1024 ciphertext, so a ciphertext manipulated only in those final bytes would compare as equal and decapsulation returned the real shared secret instead of performing the required implicit rejection.

Fix

Use of a Broken Cryptographic Algorithm

Weakness Enumeration

CWE-327

Related Identifiers

CVE-2026-10097

Affected Products

Wolfssl

References · 3

• https://github.com/wolfSSL/wolfssl/pull/10430 · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2026-10097 · Security Note
• https://wolfssl.com/docs/security-vulnerabilities · Note