CVE-2026-40032

Arbitrary command execution via unsafe placeholder evaluation

Published Apr 8, 2026 · Updated Apr 8, 2026

Command injection in UAC before 3.3.0-rc1 allows local users to execute arbitrary shell commands through crafted placeholder values. The _run_command() pipeline evaluates command strings after foreach, user, and home-directory values are substituted without shell-safe quoting. Exploitation requires a crafted value to be consumed during collection, and commands run with the privileges of the UAC process.

CVSS severity8.5
High
EPSS probability0.73%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Command injection in UAC before 3.3.0-rc1 allows local users to execute arbitrary shell commands through crafted placeholder values. The _run_command() pipeline evaluates command strings after foreach, user, and home-directory values are substituted without shell-safe quoting. Exploitation requires a crafted value to be consumed during collection, and commands run with the privileges of the UAC process.

The record

CVE
CVE-2026-40032
Published
Apr 8, 2026
Updated
Apr 8, 2026
Vendor
Thiago Canozzo Lahr
Product
Unix-like Artifacts Collector (UAC)
Classifications
CWE-78, T1059
Attack vector
local
Privileges
Unavailable

Timeline

How it unfolded

  1. Apr 8, 2026CVE publishedPublication date reported by the CVE source.
  2. Apr 8, 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?

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

  1. Affected versionversion=0 <=3.2.0

What conditions does exploitation require?

Attack vectorlocal
Required privilegesUnavailable in this record.

What is affected?

Thiago Canozzo Lahr · Unix-like Artifacts Collector (UAC)version=0 <=3.2.0

Published CVSS scores

7.8VulnCheckCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
8.5VulnCheckCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

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
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
T1059Command and Scripting Interpreter

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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