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Case File

CVE-2009-0021

MEDIUM · CVSS 5 EPSS 3.22%

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2009-01-07 · Last synced 2026-08-04

CyberRota Analysis

This is a medium severity vulnerability with a CVSS score of 5.0. It affects OpenSSL. It may be remotely exploitable.

CVE
CVE-2009-0021
Severity
MEDIUM
CVSS
5
EPSS
3.22%
OpenSSL

Original NVD Description

NTP 4.2.4 before 4.2.4p5 and 4.2.5 before 4.2.5p150 does not properly check the return value from the OpenSSL EVP_VerifyFinal function, which allows remote attackers to bypass validation of the certificate chain via a malformed SSL/TLS signature for DSA and ECDSA keys, a similar vulnerability to CVE-2008-5077.