CVE-2026-25833: Mbed TLS 3.5.0 to 3.6.5 fixed in 3.6.6 and 4.1.0 has a buffer overflow in the x509_inet_pton_ipv6() function

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/E:U
Exploit Status
Not Exploited
Patch Tuesday
2026-Apr
Released
2026-05-07
Last Updated
2026-06-02
EPSS Score
0.31% (percentile: 22.3%)

Affected Products (2)

Open Source Software

  • azl3 nodejs24 24.14.1-2 on Azure Linux 3.0

Other

  • 21370-17084

Revision History

  • 2026-05-07: Information published.
  • 2026-05-19: Information published.
  • 2026-05-31: Information published.
  • 2026-06-01: Information published.
  • 2026-06-02: Information published.