VulnerabilityAnalyzed

CVE-2026-45253

ptrace(PT_SC_REMOTE) failed to properly validate parameters for the syscall(2) and __syscall(2) meta-system calls.

HIGH 8.4EPSS 0.20%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (0.20%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

Description

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: 8.4 HIGHCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS: 0.20% probability · 10th percentile
CISA KEV: Not listed
Weakness: CWE-787
Affected: freebsd/freebsd
Source: secteam@freebsd.org

References

https://security.freebsd.org/advisories/FreeBSD-SA-26:21.ptrace.ascVendor Advisory

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.