CVE-2021-48017: OrbiTeam BSCW Server (High, CVSS 8.7)
- CVSS
- 8.7 High (v4.0)
- Exploited in the wild
- Not on CISA’s KEV list
- Public exploit
- None reported in public exploit databases
- Weakness
- CWE-22
- Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N- Published
- Oct 22, 2026
What it is
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.
Description from the National Vulnerability Database.
What to do
Check whether you run OrbiTeam BSCW Server, then apply the vendor’s fix or mitigation from the advisories below.
Sources: NVD, FIRST EPSS, CISA KEV, and public exploit databases (availability only). ThreatRoundup reports whether public exploit code exists but never links to it: fake proof-of-concepts that infect security researchers are common. This page updates automatically.