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Case File

CVE-2020-8929

MEDIUM · CVSS 5.3 EPSS 0.46% Public Exploit

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2020-10-19 · Last synced 2026-08-04

CyberRota Analysis

This is a medium severity vulnerability with a CVSS score of 5.3. 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.

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

CVE
CVE-2020-8929
Severity
MEDIUM
CVSS
5.3
EPSS
0.46%
Java

Original NVD Description

A mis-handling of invalid unicode characters in the Java implementation of Tink versions prior to 1.5 allows an attacker to change the ID part of a ciphertext, which result in the creation of a second ciphertext that can decrypt to the same plaintext. This can be a problem with encrypting deterministic AEAD with a single key, and rely on a unique ciphertext-per-plaintext.

Related CVEs

Other vulnerabilities affecting the same vendor(s)