---
id: CVE-2026-58096
title: >-
  LcpDecodeConfig() did not validate the length of received endpoint
  discriminator options against the minimum required by RFC 1717
summary: >-
  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…
severity: high
cvss: 8.8
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'
cwe:
  - CWE-130
  - CWE-787
vendor: freebsd
product: freebsd
affected:
  - freebsd = 14.4
  - freebsd = 15.0
  - freebsd = 15.1
published: '2026-08-26'
updated: '2026-09-10'
sourceUpdated: '2026-09-10T15:39:04.077'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-58096'
references:
  - url: 'https://security.freebsd.org/advisories/FreeBSD-SA-26:60.ppp.asc'
    label: secteam@freebsd.org
tags:
  - nvd
epss: 0.00604
epssPercentile: 0.46746
ingestedAt: '2026-09-10T15:53:17.038Z'
---

## Overview

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.

## Affected

- `freebsd = 14.4`
- `freebsd = 15.0`
- `freebsd = 15.1`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.