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Case File

CVE-2020-36843

MEDIUM · CVSS 4.3 EPSS 0.13% Public Exploit

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2025-03-13 · Last synced 2026-08-04

CyberRota Analysis

This is a medium severity vulnerability with a CVSS score of 4.3. It affects Java. 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.

GitHub PoC Links
github.com ↗

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

CVE
CVE-2020-36843
Severity
MEDIUM
CVSS
4.3
EPSS
0.13%
Java

Original NVD Description

The implementation of EdDSA in EdDSA-Java (aka ed25519-java) through 0.3.0 exhibits signature malleability and does not satisfy the SUF-CMA (Strong Existential Unforgeability under Chosen Message Attacks) property. This allows attackers to create new valid signatures different from previous signatures for a known message.