Is CVE-2026-45253 actively exploited?

No active exploitation of CVE-2026-45253 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-45253 be exploited remotely?

No. CVE-2026-45253 requires local access to exploit.

What is the CVSS score of CVE-2026-45253?

CVE-2026-45253 has a CVSS score of 8.4 (HIGH).

HOME VULNERABILITIESCVE-2026-45253

HIGH

CVE-2026-45253

CWE-787Published: May 21, 2026· Updated: May 21, 2026

8.4

CVSS v3.1

EPSS:0.01%probability of exploitation in 30 daysPercentile:0.3th

Official 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.

NVD Source

Technical Analysis

CVE-2026-45253 requires local access, meaning attackers must already have a foothold on the target system.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 8.4.

From a weakness classification perspective (CWE-787): Out-of-bounds write vulnerabilities can lead to data corruption, crashes, or arbitrary code execution.