What it is
CVE-2020-13638 is an unauthenticated vulnerability affecting rConfig rConfig. lib/crud/userprocess.php in rConfig 3.9.x before 3.9.7 has an authentication bypass, leading to administrator account creation. This issue...
Vulnerability report
Exploited in the wild
High confidence
Not in CISA KEV
CVE-2020-13638
rConfig Authentication Bypass
rConfig / rConfig
- Severity
- CVSS 9.8 · Critical
- Confidence
- High
- Exploit status
- Exploited in the wild
- EPSS
- 76.8%
- First observed
- —
- Last observed
- —
Decision summary
What security teams need to know first
Direct answers before the deeper technical record.
Is it exploited?
Yes. KEVIntel tracks this CVE as a known exploited vulnerability. Confidence is high.
Who is affected?
rConfig / rConfig.
What should we do?
Prioritize remediation. Validate affected assets and apply vendor fixes on an accelerated timeline.
Overview
rConfig Authentication Bypass
lib/crud/userprocess.php in rConfig 3.9.x before 3.9.7 has an authentication bypass, leading to administrator account creation. This issue has been fixed in 3.9.7.
- Published
- 13 Nov 2020
- Exploitation Reported
- 01 Jun 2025
- Attack vector
- Remote
- Complexity
- Low
- Privileges
- None
- User interaction
- None
Tags
nuclei_scanner
CVE References
- theguly.github.io/2020/09/rconfig-3.9.4-multiple-vulnerabilities theguly.github.io · CVE Record https://theguly.github.io/2020/09/rconfig-3.9.4-multiple-vulnerabilit...
Exploitation evidence
Why KEVIntel 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 KEVIntel record.
Proof of concept available
Nuclei Templates
Public scanner or PoC coverage increases practical exploitability.
Known exploited vulnerability sources
Per-source evidence links for KEV attestations are available through the KEVIntel Pro API.
Learn about Pro API access| Source | Added |
|---|---|
| The Shadowserver First | 2025-06-01 00:00 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
Nuclei template detected 25 Apr 2025.
View Nuclei template (opens in new tab)Virtual patch status
No KEVIntel virtual patch is currently available. Future rules ship for ModSecurity, Cloudflare, and AWS WAF.
Learn about virtual patches →Scanner Artifacts
Scanner and exploit-framework references linked to this CVE.
| Scanner | Reference | Detected |
|---|---|---|
| Nuclei | https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2020/CVE-2020-13638.yaml | 25 Apr 2025 |
Risk and context
Severity, weaknesses, and research context
CVSS v3.1
9.8
Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS
76.8%
Weaknesses
All CVSS Scores
CVSS v3.1
9.8
Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v2.0
7.5
High
AV:N/AC:L/Au:N/C:P/I:P/A:P
Potential Proof of Concepts
These PoCs are unverified and could contain malware. Use at your own risk.
rConfig 3.9 - Authentication Bypass(Admin Login)
nuclei · Created Unknown
Timeline
From disclosure to observed exploitation
-
Public PoC available
Public proof-of-concept code published
-
Added to KEVIntel KEV Feed
High-confidence, third-party attested exploitation
-
Nuclei template available
Scanner coverage available
-
CVE published
Vulnerability disclosed publicly
-
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-2020-13638
Free JSON includes basic KEV fields{
"cve_id": "CVE-2020-13638",
"confidence": "High",
"cvss_score": 9.8,
"epss_score": 0.76758,
"exploit_status": {
"exploited_in_the_wild": true,
"active_exploitation_observed": false
},
"sensor_telemetry": { "attempts": 0, "sensors": 0 }
}