CVE-2026-58096

⚠️ high

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 and CVE-2026-58096 to crash ppp(8) or potentially execute arbitrary code as root.

CVSS Score

8.8

High

EPSS Score

0.6

Exploit Probability

Published Date

2026-08-26

First Seen: 2026-08-28

📊 Relative Risk Intelligence

This CVE is High Risk - more severe than 80.8% of all 360,673 vulnerabilities in our database.

#69,256

Top 25% most severe

Severity Percentile

🎯 CISA SSVC Assessment Updated: Aug 27, 2026

🔍 Exploitation Status

None

No known exploits

⚙️ Automatable

Requires human interaction

💥 Technical Impact

Total

Complete system compromise possible

🏆 Discovered By

Robert Morris Décio Brandão (0xDBJ) Joshua Rogers Reo Shiseki

SSVC data provided by CISA

Last Modified 2026-09-10

Source NVD 🔗

CVSS Vector 3.1 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CWE IDs (Weakness Types)

CWE-130 CWE-787

📦 Affected Products 3

Vendor	Product	Status	Affected Versions
freebsd	freebsd	Affected	v14.4
freebsd	freebsd	Affected	v15.0
freebsd	freebsd	Affected	v15.1

🔗 References 1

https://security.freebsd.org/advisories/FreeBSD-SA-2...

Vendor Advisory

🔗 Related CVEs 6

CVE ID	Severity	CVSS	EPSS	Summary	Published
CVE-2026-58095	⚠️ high	8.8	0.6	mp_Enddisc() used incorrect length calculations when formatting endpoint discriminator addresses for display, allowing a...	2026-08-26
CVE-2026-58097	⚠️ high	7.8	0.2	mp_SetEnddisc() copied a user-supplied PSN endpoint value without length validation, allowing a buffer overflow via the ...	2026-08-26
CVE-2026-49415	⚠️ high	8.8	0.2	During execve(2) of a SUID binary, the new virtual address space is installed before the process credentials are updated...	2026-08-19
CVE-2026-49418	⚠️ high	8.8	0.3	When msync(MS_INVALIDATE) is called on a mapping of an unmanaged device object, the physical pages in the mapping range ...	2026-08-19
CVE-2026-49419	⚠️ high	8.8	0.3	When the JAIL_AT_DESC flag is specified, kern_jail_set() and kern_jail_get() released the reference to the caller's curr...	2026-08-19
CVE-2026-49420	⚠️ high	8.8	0.3	The RTSP handler in libalias rewrote outgoing packets into a fixed-length stack buffer without checking whether the rewr...	2026-08-19

These CVEs affect the same products