XXE in Sangfor Technologies Co. Ltd. Behavior Management System (Dc System)
CVE-2023-7307
Sangfor Behavior Management System (also referred to as DC Management System in Chinese-language documentation) contains an XML external entity (XXE) injection vulnerability in the /src/sangforindex endpoint. A remote unauthenticated attacker can submit crafted XML data containing external entity definitions, leading to potential disclosure of internal files, server-side request forgery (SSRF), or other impacts depending on parser behavior. The vulnerability is due to improper configuration of the XML parser, which allows resolution of external entities without restriction. This product is now integrated into their IAM (Internet Access Management) platform and an affected version range is undefined. Exploitation evidence was first observed by the Shadowserver Foundation on 2023-09-06 UTC.
Vulnerability class: XXE (XML External Entity)
EPSS: 0.005 (41.0th percentile) — read the EPSS interpretation.
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- disclosure@vulncheck.com (technical-description, exploit)
- disclosure@vulncheck.com (product)
- disclosure@vulncheck.com (product)
- disclosure@vulncheck.com (third-party-advisory)
Frequently asked questions
- What is CVE-2023-7307?
- CVE-2023-7307 is a vulnerability in Sangfor Technologies Co. Ltd. Behavior Management System (Dc System), classified under Improper Restriction of XML External Entity Reference (XXE). Published 2025-08-27.
- Is CVE-2023-7307 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.