CVE-2026-36045Public exploitNetwork attack vector

Remote command execution via incomplete shell denylist

Published May 27, 2026 · Updated May 27, 2026

OS command injection in Sipeed picoclaw 0.1.2 and earlier allows remote attackers to execute arbitrary commands through ExecTool. The guardCommand() function compares input against only eight destructive-command patterns, then passes unmatched input to PowerShell or sh -c. ExecTool is enabled by default, and any remote channel permitted to send agent messages can reach host-shell execution.

CVSS severity7.3
High
EPSS probability1.31%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

OS command injection in Sipeed picoclaw 0.1.2 and earlier allows remote attackers to execute arbitrary commands through ExecTool. The guardCommand() function compares input against only eight destructive-command patterns, then passes unmatched input to PowerShell or sh -c. ExecTool is enabled by default, and any remote channel permitted to send agent messages can reach host-shell execution.

The record

CVE
CVE-2026-36045
Published
May 27, 2026
Updated
May 27, 2026
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-78, T1059.001, T1059.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 27, 2026CVE publishedPublication date reported by the CVE source.
  2. May 27, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

7.3GitHub Advisory DatabaseCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
8.8NucleiAvCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

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)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
T1059.001Command and Scripting Interpreter: PowerShell
T1059.004Command and Scripting Interpreter: Unix Shell

Public exploit references

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

Technologies

Your stack

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Your stack

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