CVE-2026-5503: out-of-bounds write in TLSX_EchChangeSNI via attacker-controlled publicName

Overview

Severity
N/A
Exploit Status
Not Exploited
Patch Tuesday
2026-Apr
Released
2026-04-15
Last Updated
2026-04-30
EPSS Score
0.36% (percentile: 27.3%)

Affected Products (2)

Open Source Software

  • azl3 mariadb 10.11.16-1 on Azure Linux 3.0
  • cbl2 mariadb 10.6.25-1 on CBL Mariner 2.0

Revision History

  • 2026-04-15: Information published.
  • 2026-04-30: Information published.