PT-2026-31469 · Tclahr+1 · Uac

CVE-2026-40032 · Published 2026-04-08 · Updated 2026-04-08

Positive Technologies (AI Summary)

CVSS v4.0

8.5

High

Base vector

AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Name of the Vulnerable Software and Affected Versions UAC (Unix-like Artifacts Collector) versions prior to 3.3.0-rc1

Description A command injection issue exists in the placeholder substitution and command execution pipeline. The run command() function passes constructed command strings directly to eval without proper sanitization. This allows attackers to execute arbitrary commands with the privileges of the UAC process by injecting shell metacharacters or command substitutions through controlled inputs, such as %line% values from foreach iterators and %user% or %user home% values derived from system files.

Recommendations Update to version 3.3.0-rc1 or later.

Exploit

Fix

OS Command Injection

Weakness Enumeration

CWE-78

Related Identifiers

CVE-2026-40032

Affected Products

Uac

References · 10

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/40xxx/CVE-2026-40032.json · Exploit
• https://github.com/tclahr/uac/commit/50ace60e172e38feb78347bdf579311c23eff078 · Patch
• https://github.com/tclahr/uac/commit/cb95d7166cd47908e1189d9669e43f9a6d3d707f · Patch
• https://github.com/tclahr/uac/commit/d0fca5e36d8d6a33a4404f0f6fe92b0424544589 · Patch
• https://mobasi.ai/sentinel · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-40032 · Security Note
• https://osv.dev/vulnerability/CVE-2026-40032 · Vendor Advisory
• https://github.com/tclahr/uac/issues/429 · Note
• https://github.com/tclahr/uac/pull/443 · Note
• https://vulncheck.com/advisories/uac-rc1-command-injection-via-placeholder-substitution · Note