Heap-based buffer overflow in FreeBSD - CVE-2026-58097
Published: August 26, 2026
Vulnerability identifier: #VU145746
CSH Severity: Low
CVSS v4: 8.5 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-58097
CWE-ID: CWE-122
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to execute arbitrary code.
The vulnerability exists due to a buffer overflow in mp_SetEnddisc() when handling a user-supplied PSN endpoint value through the ppp(8) command interface. A local user can supply a specially crafted PSN endpoint value to execute arbitrary code.
Exploitation requires access to the ppp(8) command interface. The issue can also crash ppp(8).
Affected software
FreeBSD
How to mitigate CVE-2026-58097
Install security update from vendor's website.