Vulnerability · Published Oct 22, 2026 · Assigned by VulnCheck

CVE-2021-48017OrbiTeam BSCW Server < 5.2.5 / 7.4.4 Path Traversal via bscw.cgi

High 7.5

In plain English

A high-severity path traversal in BSCW Server from OrbiTeam. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 37% of all known vulnerabilities).

Severity (CVSS 3.1)7.5High

Exploit odds (30 days)0.4%top 62.8% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

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 products (as reported)

Vendor	Product	Versions
OrbiTeam	BSCW Server	5.0.0 – before 5.2.57.0.0 – before 7.4.4

Weakness: CWE-22 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

References

Archived SEC Consult SA-20211202-0 third-party-advisory, exploit
Packet Storm 165156 exploit
Nuclei Template technical-description
VulnCheck Advisory: OrbiTeam BSCW Server < 5.2.5 / 7.4.4 Path Traversal via bscw.cgi third-party-advisory