CVE-2026-40032 | tclahr UAC up to 3.2.0 Placeholder _run_command os command injection (ID 429)

VDB-356483 · CVE-2026-40032 · ID 429 TCLAHR UAC UP TO 3.2.0 PLACEHOLDER _RUN_COMMAND OS COMMAND INJECTION HISTORYDIFFRELATEJSONXMLCTI CVSS Meta Temp Score Current Exploit Price (≈) CTI Interest Score 6.9 $0-$5k 0.67+ Summaryinfo A vulnerability, which was classified as critical, has been found in tclahr UAC up to 3.2.0. The affected element is the function _run_command of the component Placeholder Handler. The manipulation leads to os command injection. This vulnerability is listed as CVE-2026-40032. The attack may be initiated remotely. There is no available exploit. It is advisable to upgrade the affected component. Detailsinfo A vulnerability, which was classified as critical, has been found in tclahr UAC up to 3.2.0. This issue affects the function _run_command of the component Placeholder Handler. The manipulation with an unknown input leads to a os command injection vulnerability. Using CWE to declare the problem leads to CWE-78. The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component. Impacted is confidentiality, integrity, and availability. The summary by CVE is: UAC (Unix-like Artifacts Collector) before 3.3.0-rc1 contains a command injection vulnerability in the placeholder substitution and command execution pipeline where the _run_command() function passes constructed command strings directly to eval without proper sanitization. Attackers can inject shell metacharacters or command substitutions through attacker-controlled inputs including %line% values from foreach iterators and %user% / %user_home% values derived from system files to achieve arbitrary command execution with the privileges of the UAC process. The weakness was presented with Mobasi Security Team as 429. It is possible to read the advisory at github.com. The identification of this vulnerability is CVE-2026-40032 since 04/08/2026. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. It demands that the victim is doing some kind of user interaction. Technical details of the vulnerability are known, but there is no available exploit. The attack technique deployed by this issue is T1202 according to MITRE ATT&CK. Upgrading to version 3.3.0-rc1 eliminates this vulnerability. Applying the patch 50ace60e172e38feb78347bdf579311c23eff078 is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version. Productinfo Vendor tclahr Name UAC Version 3.0 3.1 3.2.0 License open-source Website Product: https://github.com/tclahr/uac/ CPE 2.3info 🔒 🔒 🔒 CPE 2.2info 🔒 🔒 🔒 CVSSv4info VulDB Vector: 🔒 VulDB Reliability: 🔍 CNA CVSS-B Score: 🔒 CNA CVSS-BT Score: 🔒 CNA Vector: 🔒 CVSSv3info VulDB Meta Base Score: 7.0 VulDB Meta Temp Score: 6.9 VulDB Base Score: 6.3 VulDB Temp Score: 6.0 VulDB Vector: 🔒 VulDB Reliability: 🔍 CNA Base Score: 7.8 CNA Vector (VulnCheck): 🔒 CVSSv2info Vector Complexity Authentication Confidentiality Integrity Availability Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock VulDB Base Score: 🔒 VulDB Temp Score: 🔒 VulDB Reliability: 🔍 Exploitinginfo Class: Os command injection CWE: CWE-78 / CWE-77 / CWE-74 CAPEC: 🔒 ATT&CK: 🔒 Physical: Partially Local: Yes Remote: Yes Availability: 🔒 Status: Not defined Price Prediction: 🔍 Current Price Estimation: 🔒 0-Day Unlock Unlock Unlock Unlock Today Unlock Unlock Unlock Unlock Threat Intelligenceinfo Interest: 🔍 Active Actors: 🔍 Active APT Groups: 🔍 Countermeasuresinfo Recommended: Upgrade Status: 🔍 0-Day Time: 🔒 Upgrade: UAC 3.3.0-rc1 Patch: 50ace60e172e38feb78347bdf579311c23eff078 Timelineinfo 04/08/2026 CVE reserved 04/09/2026 +1 days Advisory disclosed 04/09/2026 +0 days VulDB entry created 04/09/2026 +0 days VulDB entry last update Sourcesinfo Product: github.com Advisory: 429 Organization: Mobasi Security Team Status: Confirmed CVE: CVE-2026-40032 (🔒) GCVE (CVE): GCVE-0-2026-40032 GCVE (VulDB): GCVE-100-356483 Entryinfo Created: 04/09/2026 02:47 Changes: 04/09/2026 02:47 (81) Complete: 🔍 Cache ID: 99:BC3:101 Discussion No comments yet. Languages: en. Please log in to comment. ◂ PreviousOverviewNext ▸