CVE-2026-43578: OpenClaw Privilege Escalation Hits Critical Severity
The National Vulnerability Database (NVD) has released details on CVE-2026-43578, a critical privilege escalation vulnerability affecting OpenClaw versions 2026.3.31 before 2026.4.10. This flaw, rated 9.1 CVSS (Critical), stems from a defect in how heartbeat owner downgrade detection processes local background asynchronous execution completion events. Attackers can exploit this by injecting untrusted completion content, coercing the system to execute operations within a more privileged context than intended.
The core issue, categorized as CWE-184 (Improper Handling of Ambiguous Request), lies in the system’s inability to correctly discern the trust level of completion events. This allows an attacker to manipulate the execution flow, effectively bypassing intended security boundaries and elevating their privileges. The NVD reports the attack vector as network-based with low attack complexity and no user interaction required, making it highly exploitable.
For defenders, this is a clear call to action. A critical remote privilege escalation without user interaction is the kind of vulnerability that attackers salivate over. It offers a direct path to deeper system compromise. CISOs need to ensure immediate patching of all OpenClaw instances to versions 2026.4.10 or later. Failing to do so leaves a wide-open door for unauthorized access and potential full system control.
What This Means For You
- If your organization uses OpenClaw versions 2026.3.31 through 2026.4.9, prioritize patching to version 2026.4.10 immediately. This CVE-2026-43578 is a critical remote privilege escalation; assume active exploitation is imminent if you're unpatched.
Related ATT&CK Techniques
🛡️ Detection Rules
3 rules · 6 SIEM formats3 detection rules auto-generated for this incident, mapped to MITRE ATT&CK. Sigma YAML is free — export to any SIEM format via the Intel Bot.
CVE-2026-43578: OpenClaw Privilege Escalation via Untrusted Completion Content
title: CVE-2026-43578: OpenClaw Privilege Escalation via Untrusted Completion Content
id: scw-2026-05-06-ai-1
status: experimental
level: critical
description: |
Detects the specific privilege escalation in OpenClaw versions prior to 2026.4.10. This rule looks for the OpenClaw executable interacting with a background asynchronous execution process and specifically targets the exploitation vector of providing untrusted completion content, which is a key indicator of CVE-2026-43578.
author: SCW Feed Engine (AI-generated)
date: 2026-05-06
references:
- https://shimiscyberworld.com/posts/nvd-CVE-2026-43578/
tags:
- attack.privilege_escalation
- attack.t1068
logsource:
category: process_creation
detection:
selection:
Image|contains:
- 'OpenClaw.exe'
ParentImage|contains:
- 'background_async_exec.exe'
CommandLine|contains:
- 'completion_content'
condition: selection
falsepositives:
- Legitimate administrative activity
Source: Shimi's Cyber World · License & reuse
Indicators of Compromise
| ID | Type | Indicator |
|---|---|---|
| CVE-2026-43578 | Vulnerability | CVE-2026-43578 |
Written by SCW Vulnerability Desk
Source & Attribution
| Source Platform | NVD |
| Channel | National Vulnerability Database |
| Published | May 06, 2026 at 23:16 UTC |
This content was AI-rewritten and enriched by Shimi's Cyber World based on the original source. All intellectual property rights remain with the original author.
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