CVE-2026-45253highCWE-787

CVE-2026-45253: high-severity vulnerability in FreeBSD

Missing validation in ptrace(PT_SC_REMOTE)

Published · Updated

Follow this CVE+ Monitor FreeBSD

E-mail alert when it lands in KEV, gets a public PoC or its score goes up.

21Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackcvss 8.4epss 0.2%
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.
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected products
FreeBSD · FreeBSD
Related CVEs — FreeBSD

In the same product, most dangerous first.

CVE-2018-17157—CVE-2018-17157EPSS 24.2%CVE-2017-1084—CVE-2017-1084EPSS 15.3%CVE-2025-14558HIGHRemote code execution via ND6 Router AdvertisementsEPSS 6.5%CVE-2019-5600—CVE-2019-5600EPSS 4.9%CVE-2018-17158—CVE-2018-17158EPSS 4.4%CVE-2018-6918—CVE-2018-6918EPSS 4.2%