CVE-2026-27884 MEDIUM

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

Vendor Pennyw0Rth
Product NetExec
Weakness CWE-22 · Path traversal
Published February 26, 2026
Last update February 26, 2026

CVSS base score

5.3/10
Attack vector Network
Attack complexity High
Privileges required None
User interaction Required
Confidentiality None
Integrity High

CVSS vector

CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:N

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

February 26, 2026 CVE published
February 26, 2026 Record updated