What it is
CVE-2023-7307 is an unauthenticated Sangfor Behavior Management System XML External Entity Injection affecting Sangfor Technologies Co. Ltd. Sangfor Behavior Management System (DC Management System).
Vulnerability report
Exploited in the wild
High confidence
Not in CISA KEV
CVE-2023-7307
Sangfor Behavior Management System XML External Entity Injection
Sangfor Technologies Co. Ltd. / Sangfor Behavior Management System (DC Management System) · *
- Severity
- CVSS 8.7 · High
- Confidence
- High
- Exploit status
- Exploited in the wild
- EPSS
- 0.5%
- First observed
- —
- Last observed
- —
Decision summary
What security teams need to know first
Direct answers before the deeper technical record.
Is it exploited?
Yes. KEV Intelligence tracks this CVE as a known exploited vulnerability. Confidence is high.
Who is affected?
Sangfor Technologies Co. Ltd. / Sangfor Behavior Management System (DC Management System) *.
What should we do?
Prioritize remediation. Validate affected assets and apply vendor fixes on an accelerated timeline.
Overview
Sangfor Behavior Management System XML External Entity Injection
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.
Vendor
Product
Affected
Status
Sangfor Technologies Co. Ltd.
Sangfor Behavior Management System (DC Management System)
*
Affected
- Published
- 27 Aug 2025
- Exploitation Reported
- 27 Aug 2025
- Attack vector
- Remote
- Complexity
- Low
- Privileges
- None
- User interaction
- None
CVE References
- CVE Record CVE.org · CVE Record https://www.cve.org/CVERecord?id=CVE-2023-7307
- Third-Party Advisory — vulncheck.com vulncheck.com · Third-Party Advisory https://www.vulncheck.com/advisories/sangfor-behavior-management-syst...
- Exploit — cnblogs.com cnblogs.com · Exploit https://www.cnblogs.com/pursue-security/p/17666126.html
- Product — support.sangfor.com.cn support.sangfor.com.cn · Product https://support.sangfor.com.cn/productDocument/read?product_id=22&ver...
- Product — sangfor.com sangfor.com · Product https://www.sangfor.com/blog/cybersecurity/launching-sangfor-iam-12-0...
Exploitation evidence
Why KEV Intelligence marks this CVE as exploited
Third-party attestation and first-party sensor observation are shown separately so teams can judge the evidence chain.
Exploited in the wild
The Shadowserver
Independent exploitation attestation added to the KEV Intelligence record.
Known exploited vulnerability sources
Per-source evidence links for KEV attestations are available through the KEV Intelligence Pro API.
Learn about Pro API access| Source | Added |
|---|---|
| The Shadowserver First | 2025-08-27 21:26 UTC |
Detection
Operational artifacts and observed signals
Make the evidence actionable in scanner, SOC, and edge-control workflows.
Observed signals
- Request targets
- 0
- User-Agents
- 0
Raw values available in Pro and Enterprise.
Scanner coverage
No scanner integrations recorded yet.
Virtual patch status
No KEV Intelligence virtual patch is currently available. Future rules ship for ModSecurity, Cloudflare, and AWS WAF.
Learn about virtual patches →No detection artifacts or sensor request patterns are available for this CVE yet.
Check back as sensor telemetry and scanner integrations are updated.
Risk and context
Severity, weaknesses, and research context
CVSS v4.0
8.7
High
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
EPSS
0.5%
Timeline
From disclosure to observed exploitation
-
CVE published
Vulnerability disclosed publicly
-
Added to KEV Intelligence KEV Feed
High-confidence, third-party attested exploitation
-
CVE ID reserved
Identifier reserved by the CNA
Pro API
Automate this intelligence
Confidence, exploit status, sensor telemetry, PoCs, scanner integrations, mentions, and tags are available programmatically for VM, SOC, and CTI workflows.
- Evidence confidence and provenance
- First-party sensor telemetry
- PoC and scanner references
- Affected versions and enrichment
- Automation-ready JSON delivery
GET /api/v2/pro/kevs/CVE-2023-7307
Free JSON includes basic KEV fields{
"cve_id": "CVE-2023-7307",
"confidence": "High",
"cvss_score": 8.7,
"cvss_estimated": false,
"epss_score": 0.00517,
"exploit_status": {
"exploited_in_the_wild": true,
"active_exploitation_observed": false
},
"sensor_telemetry": { "attempts": 0, "sensors": 0 }
}Early warning alerts
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