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Case File

CVE-2020-13895

HIGH · CVSS 8.8 EPSS 0.71% Public Exploit

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2020-06-07 · Last synced 2026-08-04

CyberRota Analysis

This is a high severity vulnerability with a CVSS score of 8.8. Public exploit code or proof-of-concept references have been detected in its references.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2020-13895
Severity
HIGH
CVSS
8.8
EPSS
0.71%

Original NVD Description

Crypt::Perl::ECDSA in the Crypt::Perl (aka p5-Crypt-Perl) module before 0.32 for Perl fails to verify correct ECDSA signatures when r and s are small and when s = 1. This happens when using the curve secp256r1 (prime256v1). This could conceivably have a security-relevant impact if an attacker wishes to use public r and s values when guessing whether signature verification will fail.

Related CVEs

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