RCE in Tclahr Uac
CVE-2026-41449
UAC (Unix-like Artifacts Collector) versions prior to 3.3.0 contain a command injection vulnerability in the _run_command function that allows attackers to execute arbitrary commands by injecting shell metacharacters into untrusted data such as usernames, process names, or filenames. Attackers can exploit this vulnerability through crafted evidence inputs, mounted images with hostile filenames, or tampered artifact definitions to achieve remote code execution on the analyst's host when processing evidence.
Vulnerability class: Command Injection (OS Command Injection)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.010 (62.6th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 63rd percentile — 62.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.006 · newest: 0.010 · change: +0.004
Affected products
Weakness classification (CWE)
References
- github.com/tclahr/uac/pull/443 (issue-tracking)
- github.com/tclahr/uac/commit/2cc367d8ead388f05abd3cfb8af537788a124e72 (patch)
- www.vulncheck.com/advisories/uac-command-injection-via-run-command-sh (third-party-advisory)
Frequently asked questions
- What is CVE-2026-41449?
- CVE-2026-41449 is a high-severity vulnerability in Tclahr Uac, classified under OS Command Injection. CVSS score: 7.8/10. Published 2026-08-21.
- How severe is CVE-2026-41449?
- High severity. CVSS v3 base score is 7.8 out of 10.