CVE-2026-45253
HIGHFreeBSD 15.0-RELEASE < p9, 14.4-RELEASE < p5, 14.3-RELEASE < p14 - Out-of-bounds Write in ptrace(PT_SC_REMOTE)
Title source: llmDescription
ptrace(PT_SC_REMOTE) failed to properly validate parameters for the syscall(2) and __syscall(2) meta-system calls. As a result, a user with the ability to debug a process may trigger arbitrary code execution in the kernel, even if the target process has no special privileges. The missing validation allows an unprivileged local user to escalate privileges, potentially gaining full control of the affected system.
References (1)
Core 1
Core References
Vendor Advisory vendor-advisory
https://security.freebsd.org/advisories/FreeBSD-SA-26:21.ptrace.asc
Scores
CVSS v3
8.4
EPSS
0.0001
EPSS Percentile
0.3%
Attack Vector
LOCAL
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
total
Details
CWE
CWE-787
Status
published
Products (6)
freebsd/freebsd
14.3 (14 CPE variants)
freebsd/freebsd
14.4 (6 CPE variants)
freebsd/freebsd
15.0 (9 CPE variants)
FreeBSD/FreeBSD
14.3-RELEASE - p14
FreeBSD/FreeBSD
14.4-RELEASE - p5
FreeBSD/FreeBSD
15.0-RELEASE - p9
Published
May 21, 2026
Tracked Since
May 21, 2026