CVE-2026-27486

Service interruption via unowned PID termination

Published Feb 21, 2026 · Updated Feb 21, 2026

Improper process termination in OpenClaw CLI before 2026.2.14 allows local users to interrupt unrelated processes on shared hosts. The CLI runner cleanup helpers enumerate system-wide processes, match command lines, and send SIGKILL without confirming that each PID is a child of the current OpenClaw process. Triggering cleanup requires local low-privileged execution and a matching command line; the bounded consequence is abrupt termination of another user's process.

CVSS severity4.3
Medium
EPSS probability0.29%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Improper process termination in OpenClaw CLI before 2026.2.14 allows local users to interrupt unrelated processes on shared hosts. The CLI runner cleanup helpers enumerate system-wide processes, match command lines, and send SIGKILL without confirming that each PID is a child of the current OpenClaw process. Triggering cleanup requires local low-privileged execution and a matching command line; the bounded consequence is abrupt termination of another user's process.

The record

CVE
CVE-2026-27486
Published
Feb 21, 2026
Updated
Feb 21, 2026
Vendor
OpenClaw Foundation
Product
OpenClaw
Classifications
CWE-283, T1489
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Feb 21, 2026CVE publishedPublication date reported by the CVE source.
  2. Feb 21, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 2026.2.14

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

OpenClaw Foundation · OpenClawversion=< 2026.2.14

Published CVSS scores

4.3GitHub, Inc.CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:N/SC:N/SI:N/SA:H
5.3NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-283Unverified Ownership
T1489Service Stop

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo