ppp(8): missing length validation in mp_SetEnddisc()

published 2026-08-26 2 mo ago modified 2026-09-10 59 d ago also EUVD-2026-66248

cvss: 7.8; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.2%; EPSS 0.2% chance of exploitation in 30 days, percentile 5%
public exploits: 0; none known

mp_SetEnddisc() copied a user-supplied PSN endpoint value without length validation, allowing a buffer overflow via the ppp(8) command interface.

A local user with access to the ppp(8) command interface can crash ppp(8) or potentially execute arbitrary code as root.

Patch / fix

fixed in 1

FreeBSD FreeBSD p3, p9, p13

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: total
Assessed: 2 mo ago (2026-08-26)

Exploit prediction

0.17% chance of exploitation in the next 30 days, higher than 5% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CISA ADP	3.1	7.8	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CNA	3.1	7.8	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

FreeBSD FreeBSD

Classification

Weakness

CWE-130 Improper Handling of Length Parameter Inconsistency
CWE-122 Heap-based Buffer Overflow

References

security.freebsd.org /advisories/FreeBSD-SA-26:60.ppp.asc
vendor-advisory

Sources

CVE List CVE-2026-58097
NVD CVE-2026-58097

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary