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Medium 5.3Published Feb 25, 2026

CVE-2026-27884NetExec vulnerable to arbitrary file write via path traversal in spider_plus module

Updated under an hour ago ()

Does this affect you?

It affects Pennyw0rth NetExec. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

NetExec is a network execution tool. Prior to version 1.5.1, the module spider_plus improperly creates the output file and folder path when saving files from SMB shares. It does not take into account that it is possible for Linux SMB shares to have path traversal characters such as `../` in them. An attacker can craft a filename in an SMB share that includes these characters, which when spider_plus crawls and downloads, can write or overwrite arbitrary files. The issue is patched in v1.5.1. As a workaround, do not run spider_plus with DOWNLOAD=true against targets.

CVSS
5.3 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:N
Weakness (CWE)
CWE-22
Known exploited
Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days)
Not loaded for this CVE
Assigned by
GitHub_M
NVD analysis
Deferred
Record last updated
Feb 26, 2026
First seen by InfoSec Signals
Oct 9, 2026

Affected products

Affected products
Pennyw0rth NetExec
pennyw0rth:netexec (from the name)
before 1.5.1
CNA record

References

References

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.

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