CVE-2026-92748
Medium
Elevated severity or exploit probability.
CVSS base
8.8
HIGH
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS — probability of exploitation (30 days)
0.8%
55.4th percentile
CISA KEV
Not listed
Weakness / dates
CWE-22
Published 2026-09-16 · modified 2026-09-18
Description
BC Security Empire before 6.7.1 fails to validate the multipart filename parameter in upload endpoints, allowing authenticated operators to write files to arbitrary paths on the C2 server. Attackers can use path traversal sequences in the filename to bypass directory containment and write malicious files to sensitive locations for code execution.
References
- https://github.com/BC-SECURITY/Empire
- https://github.com/BC-SECURITY/Empire/blob/v6.6.0/empire/server/core/download_service.py#L148-L193
- https://github.com/BC-SECURITY/Empire/commit/c33a626316cb20bc8ed707e03a22d324d5d4762a
- https://github.com/BC-SECURITY/Empire/issues/824
- https://github.com/BC-SECURITY/Empire/releases/tag/v6.7.1
- https://www.vulncheck.com/advisories/bc-security-empire-before-6.7.1-path-traversal-file-upload-rce
- https://github.com/BC-SECURITY/Empire/issues/824