---
id: CVE-2021-48017
title: OrbiTeam BSCW Server < 5.2.5 / 7.4.4 Path Traversal via bscw.cgi
summary: >-
  OrbiTeam BSCW Server 5.x before 5.2.5 and 7.x before 7.4.4 contains an
  unauthenticated path traversal vulnerability in the style_name parameter of
  the theme operation. Attackers can send GET requests to
  /pub/bscw.cgi/<id>?op=theme with .…
severity: high
cvss: 7.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N'
cvssSource: cna
cwe:
  - CWE-22
vendor: OrbiTeam
product: BSCW Server
affected:
  - bscw_server >= 5.0.0 < 5.2.5
  - bscw_server >= 7.0.0 < 7.4.4
published: '2026-10-22'
updated: '2026-10-22'
sourceUpdated: '2026-10-22T10:57:31.855Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2021-48017'
references:
  - url: >-
      https://web.archive.org/web/20260421125237/https://sec-consult.com/vulnerability-lab/advisory/multiple-vulnerabilities-in-bscw-server/
    label: Archived SEC Consult SA-20211202-0
  - url: 'https://packetstorm.news/files/id/165156/'
    label: Packet Storm 165156
  - url: >-
      https://github.com/projectdiscovery/nuclei-templates/blob/main/http/vulnerabilities/other/orbiteam-bscw-server-lfi.yaml
    label: Nuclei Template
  - url: >-
      https://www.vulncheck.com/advisories/orbiteam-bscw-server-5.2.5-7.4.4-path-traversal-via-bscw-cgi
    label: >-
      VulnCheck Advisory: OrbiTeam BSCW Server < 5.2.5 / 7.4.4 Path Traversal
      via bscw.cgi
tags:
  - cve.org
ingestedAt: '2026-10-22T11:37:02.341Z'
---

## Overview

OrbiTeam BSCW Server 5.x before 5.2.5 and 7.x before 7.4.4 contains an unauthenticated path traversal vulnerability in the style_name parameter of the theme operation. Attackers can send GET requests to /pub/bscw.cgi/<id>?op=theme with ../ sequences in style_name to read local files such as /etc/passwd. Exploitation evidence was first observed by the Shadowserver Foundation on 2023-10-22.

## Affected

- `bscw_server >= 5.0.0 < 5.2.5`
- `bscw_server >= 7.0.0 < 7.4.4`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.