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CVE-2026-39829

OpenSSH

Descripción

The RSA and DSA public key parsers did not enforce size limits on key parameters. A crafted public key with an excessively large modulus or DSA parameter could cause several minutes of CPU consumption during signature verification. This could be triggered by unauthenticated clients during public key authentication. RSA moduli are now limited to 8192 bits, and DSA parameters are validated per FIPS 186-2.

CVSS 7.5EPSS 0.46699999999999997%Riesgo 0.78
Ver fuente
Publicación
2026-05-22 04:16:22
Versiones afectadas
unknown
Tipo
Software crítico
Última modificación
2026-08-11 13:18:41
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H