Vulnerability · Published Apr 8, 2026 · Assigned by VulnCheck

CVE-2026-40029parseusbs < 1.9 Command Injection via Crafted LNK Filename

High 7.8

In plain English

A high-severity OS command injection in parseusbs from khyrenz. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.8% (higher than 57% of all known vulnerabilities).

Severity (CVSS 3.1)7.8High

Exploit odds (30 days)0.8%top 42.6% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

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.

Affected products (as reported)

Vendor	Product	Versions
khyrenz	parseusbs	0 – before 1.9.0

Weakness: CWE-78 · Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

References

Pull Request issue-tracking
Patch Commit patch
Mobasi Sentinel Vulnerability Index vendor-advisory
VulnCheck Advisory: parseusbs < 1.9 Command Injection via Crafted LNK Filename third-party-advisory