CVE-2026-74900criticalCWE-391

CVE-2026-74900: fallo crítico en jahlives openssl_encrypt

openssl_encrypt before 1.4.0 Weak Shared Secret via PQC Simulation Mode

Publicada el · Actualizada el

Seguir esta CVE+ Monitorear openssl encrypt+ Monitorear openssl-encrypt

Aviso por correo cuando entre en el KEV, tenga PoC pública o suba de nota.

28Vexday Risk Score

Sin señal de explotación. Ningún artefacto público de explotación conocido hasta ahora.

ssvc Trackcvss 9.3epss 0.6%
openssl_encrypt versions before 1.4.0 contain a critical vulnerability in pqc.py where KEM decapsulation failures silently fall back to simulation mode, generating a deterministic shared secret from only 16 bytes of the private key and publicly available encapsulated key data. Attackers who obtain 16 bytes of the private key can compute the shared secret and decrypt all ciphertext, as the fallback triggers on any KEM failure without raising an error.
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Productos afectados
jahlives · openssl_encrypt
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