CVE-2026-42257 - Vulnerability Details

Threat entity extracted from intelligence sources

Frequency
2
occurrences
First Seen
June 15, 2026
Last Seen
June 16, 2026

Related Threat Clusters

  • Ruby IMAP Library Vulnerabilities Expose Users to MITM Attacks

    Two critical vulnerabilities were discovered in Ruby's Net::IMAP library affecting Ubuntu 18.04 and 16.04 LTS. CVE-2026-42246 allows remote attackers to perform machine-in-the-middle attacks by bypassing TLS encryption.…

    2 articles · Updated June 16, 2026

Recent Intelligence Reports

  • Ubuntu 18.04 Ruby Security Advisory USN-8431 — Linuxsecurity · June 16, 2026
  • USN-8431-1: Ruby vulnerabilities — Ubuntu · June 15, 2026

CVSS v3.1 Breakdown