HOMEVULNERABILITIESCVE-2026-40029
HIGH

CVE-2026-40029

CWE-78Published: April 8, 2026· Updated: Apr 13, 2026

7.8
CVSS v3.1
EPSS:0.02%probability of exploitation in 30 daysPercentile:5.8th

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.

NVD Source

Technical Analysis

CVE-2026-40029 requires local access, meaning attackers must already have a foothold on the target system.

Exploitation does not require any privileges, though user interaction (Required) is needed, which slightly reduces the risk of mass automated attacks.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 7.8.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorLocal
Attack ComplexityLow
Privileges Req.None
User InteractionRequired
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Affected Vendors & Products

khyrenz1 product
parseusbs
Source: NVD CPE · 1 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

PATCHhttps://github.com/khyrenz/parseusbs/commit/99f05996494e7e41ea0c7e13145ba20eb793e46b
ADVISORYhttps://mobasi.ai/sentinel
ADVISORYhttps://www.vulncheck.com/advisories/parseusbs-command-injection-via-crafted-lnk-filename

All References (4)

→
https://github.com/khyrenz/parseusbs/commit/99f05996494e7e41ea0c7e13145ba20eb793e46bPatch
→
https://github.com/khyrenz/parseusbs/pull/10Issue Tracking
→
https://mobasi.ai/sentinelThird Party Advisory
→
https://www.vulncheck.com/advisories/parseusbs-command-injection-via-crafted-lnk-filenameThird Party Advisory

Quick Facts

CVE IDCVE-2026-40029
CVSS Score7.8 / 10
SeverityHIGH
WeaknessCWE-78
CISA KEVNo
EPSS (30d)0.02%
Affected1 vendor
PublishedApr 8, 2026

Related CVEs (CWE-78)

CVE-2026-41553
10.0
CVE-2026-33478
KEV10.0
CVE-2026-56004
10.0
CVE-2026-56415
10.0
CVE-2021-35402
KEV10.0
CVE-2026-6349
10.0

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2026-40029 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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