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CVE-2026-23966

Estado: AnalizadaCrítica (9.1)—

sm-crypto provides JavaScript implementations of the Chinese cryptographic algorithms SM2, SM3, and SM4. A private key recovery vulnerability exists in the SM2 decryption logic of sm-crypto prior to version 0.3.14. By interacting with the SM2 decryption interface multiple times, an attacker can fully recover the private key within approximately several hundred interactions. Version 0.3.14 patches the issue.

CVSS

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

🎯 Técnicas ATT&CK

Cómo se explota esta vulnerabilidad y qué consigue el atacante, en el lenguaje de MITRE ATT&CK.

Vulnerabilidad de recuperación de clave privada en SM2 de sm-crypto accesible remotamente (AV:N, PR:N, UI:N). El atacante extrae credenciales criptográficas mediante múltiples interacciones con la interfaz de descifrado. Impacto: robo de material criptográfico privado y potencial interceptación de c

Inferido por nuestro agente de análisis a partir de la descripción oficial, el vector CVSS y la CWE, y comprobado por un supervisor. Puede contener errores.

🛡️ Mitigaciones ATT&CK que cubren estas técnicas

Network SegmentationUser Account ManagementPrivileged Account ManagementLimit Access to Resource Over NetworkVulnerability ScanningMulti-factor Authentication

Tecnologías afectadas (1)

Juneandgreen — Sm-crypto

CWE

Referencias

JSON original (NVD)

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