CVE-2026-40029
parseusbs < 1.9 Command Injection via Crafted LNK Filename
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.
INFO
Published Date :
April 8, 2026, 10:16 p.m.
Last Modified :
July 24, 2026, 9:10 p.m.
Remotely Exploit :
No
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 3.1 | HIGH | 83251b91-4cc7-4094-a5c7-464a1b83ea10 | ||||
| CVSS 3.1 | HIGH | [email protected] | ||||
| CVSS 3.1 | HIGH | MITRE-CVE | ||||
| CVSS 3.1 | HIGH | [email protected] | ||||
| CVSS 4.0 | HIGH | 83251b91-4cc7-4094-a5c7-464a1b83ea10 | ||||
| CVSS 4.0 | HIGH | [email protected] |
Solution
- Update parseusbs to version 1.9 or later.
- Avoid parsing untrusted .lnk files.
- Sanitize all user-supplied input.
- Avoid using os.popen() with shell=True.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-40029.
| URL | Resource |
|---|---|
| https://github.com/khyrenz/parseusbs/commit/99f05996494e7e41ea0c7e13145ba20eb793e46b | Patch |
| https://github.com/khyrenz/parseusbs/pull/10 | Issue Tracking |
| https://mobasi.ai/sentinel | Third Party Advisory |
| https://www.vulncheck.com/advisories/parseusbs-command-injection-via-crafted-lnk-filename | Third Party Advisory |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-40029 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-40029
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-40029 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-40029 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Translated by [email protected]
Jul. 24, 2026
Action Type Old Value New Value Added Translation Title: parseusbs de khyrenz, Description: parseusbs anterior a 1.9 contiene una vulnerabilidad de inyección de comandos del sistema operativo en parseUSBs.py donde las rutas de archivos LNK se pasan sin sanitizar a un comando de shell os.popen(), permitiendo la ejecución arbitraria de comandos a través de nombres de archivo .lnk manipulados que contienen metacaracteres de shell. Un atacante puede manipular un nombre de archivo .lnk con metacaracteres de shell incrustados que ejecutan comandos arbitrarios en la máquina del examinador forense durante el análisis de artefactos USB. -
CVE Modified by [email protected]
Jun. 17, 2026
Action Type Old Value New Value Added Affected [{'vendor': 'khyrenz', 'product': 'parseusbs', 'versions': [{'status': 'affected', 'version': '0', 'lessThan': '1.9.0', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '1.9.0', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '99f05996494e7e41ea0c7e13145ba20eb793e46b', 'versionType': 'git'}], 'defaultStatus': 'unaffected'}] -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Jun. 17, 2026
Action Type Old Value New Value Added SSVC {'id': 'CVE-2026-40029', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'none'}, {'automatable': 'no'}, {'technicalImpact': 'total'}], 'version': '2.0.3', 'timestamp': '2026-04-09T14:48:22.522386Z'} -
Initial Analysis by [email protected]
Apr. 13, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H Added CPE Configuration OR *cpe:2.3:a:khyrenz:parseusbs:*:*:*:*:*:*:*:* versions up to (excluding) 1.9 Added Reference Type VulnCheck: https://github.com/khyrenz/parseusbs/commit/99f05996494e7e41ea0c7e13145ba20eb793e46b Types: Patch Added Reference Type VulnCheck: https://github.com/khyrenz/parseusbs/pull/10 Types: Issue Tracking Added Reference Type VulnCheck: https://mobasi.ai/sentinel Types: Third Party Advisory Added Reference Type VulnCheck: https://www.vulncheck.com/advisories/parseusbs-command-injection-via-crafted-lnk-filename Types: Third Party Advisory -
New CVE Received by [email protected]
Apr. 08, 2026
Action Type Old Value New Value Added 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. Added CVSS V4.0 AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X Added CVSS V3.1 AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H Added CWE CWE-78 Added Reference https://github.com/khyrenz/parseusbs/commit/99f05996494e7e41ea0c7e13145ba20eb793e46b Added Reference https://github.com/khyrenz/parseusbs/pull/10 Added Reference https://mobasi.ai/sentinel Added Reference https://www.vulncheck.com/advisories/parseusbs-command-injection-via-crafted-lnk-filename