CVE-2026-42959: Crash during DNSSEC validation of malicious content

Overview

Severity
High (CVSS 7.5)
CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Exploit Status
Not Exploited
Patch Tuesday
2026-May
Released
2026-05-21
EPSS Score
0.04% (percentile: 13.8%)

Affected Products (1)

Open Source Software

  • azl3 unbound 1.19.1-5 on Azure Linux 3.0

Revision History

  • 2026-05-21: Information published.