CVE-2026-58096 (High) detected in src4.0.4

[mend-bolt-for-github]

CVE-2026-58096 - High Severity Vulnerability

Vulnerable Library - src4.0.4

Library home page: https://github.com/MidnightBSD/src.git

Found in HEAD commit: 816463d989cc5839c1cca2efb5bf2503408507fb

Found in base branches: stable/4.0, master

Vulnerable Source Files (1)

/usr.sbin/ppp/lcp.c

Vulnerability Details

LcpDecodeConfig() did not validate the length of received endpoint discriminator options against the minimum required by RFC 1717. Undersized options would trigger an out-of-bounds write.
A malicious PPP peer can exploit CVE-2026-58095 and CVE-2026-58096 to crash ppp(8) or potentially execute arbitrary code as root.

Publish Date: 2026-08-26

URL: CVE-2026-58096

CVSS 3 Score Details (8.8)

Base Score Metrics:

• Exploitability Metrics:
  • Attack Vector: Network
  • Attack Complexity: Low
  • Privileges Required: Low
  • User Interaction: None
  • Scope: Unchanged
• Impact Metrics:
  • Confidentiality Impact: High
  • Integrity Impact: High
  • Availability Impact: High

For more information on CVSS3 Scores, click here.

Suggested Fix

Type: Upgrade version

Origin: https://security.freebsd.org/advisories/FreeBSD-SA-26:60.ppp.asc

Release Date: 2026-08-26

Fix Resolution: https://github.com/freebsd/freebsd-src.git - release/15.1.0-p3,https://github.com/freebsd/freebsd-src.git - release/14.4.0-p9,https://github.com/freebsd/freebsd-src.git - release/15.0.0-p13

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