RCE in Khyrenz Parseusbs
CVE-2026-40029
parseusbs before 1.9 contains an OS command injection vulnerability in parseUSBs.py where LNK file paths are passed unsanitized into an os.popen() shell command, allowing arbitrary command execution via crafted .lnk filenames containing shell metacharacters. An attacker can craft a .lnk filename with embedded shell metacharacters that execute arbitrary commands on the forensic examiner's machine during USB artifact parsing.
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: 0.013 (70.0th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 70th percentile — 70.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.008 · newest: 0.013 · change: +0.005
Affected products
- Khyrenz Parseusbs — versions 99f05996494e7e41ea0c7e13145ba20eb793e46b, 1.9.0, 0
Weakness classification (CWE)
References
- github.com/khyrenz/parseusbs/pull/10 (issue-tracking, product, Issue Tracking)
- github.com/khyrenz/parseusbs/commit/99f05996494e7e41ea0c7e13145ba20eb793e46b (Patch, patch)
- mobasi.ai/sentinel (vendor-advisory, Third Party Advisory)
- www.vulncheck.com/advisories/parseusbs-command-injection-via-crafted-lnk-filena… (Third Party Advisory, third-party-advisory)
Frequently asked questions
- What is CVE-2026-40029?
- CVE-2026-40029 is a high-severity vulnerability in Khyrenz Parseusbs, classified under OS Command Injection. CVSS score: 7.8/10. Published 2026-04-08.
- How severe is CVE-2026-40029?
- High severity. CVSS v3 base score is 7.8 out of 10.