CRMEB 3.1.0+ is vulnerable to File Upload Getshell via /crmeb/crmeb/services/UploadService.php.
Priority MEDIUM 46CWE-434Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-434.
Summary
CRMEB 3.1.0+ is vulnerable to File Upload Getshell via /crmeb/crmeb/services/UploadService.php.
Why it matters now
EPSS 0.01846 79th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:crmeb:crmeb:3.1.0\+:*:*:*:*:*:*:* | 3.1.0+ | Vulnerable | Zhong Bang |
- cpe:2.3:a:crmeb:crmeb:3.1.0\+:*:*:*:*:*:*:* Versions 3.1.0+ Vulnerable ·Zhong Bang
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2020-21787
- 2026-10-03 Alias added: GHSA-gmrc-j4q4-6cv6
References
More Zhong Bang Crmeb vulnerabilities
- TI-2024-34066 CRMEB <=5.4.0 is vulnerable to Incorrect Access Control. CVSS 3.1HIGH 7.5
- TI-2026-01417 Zhong Bang CRMEB crontab Endpoint CrontabController.php authorization CVSS 4.0MEDIUM 6.9
- TI-2026-00929 CRMEB LoginController.php appleLogin improper authentication CVSS 4.0MEDIUM 6.9
- TI-2024-24421 SQL Injection vulnerability in CRMEB v.5.2.2 allows a remote attacker to obtain sensitive… CVSS 3.1HIGH 7.5
- TI-2023-01103 Zhong Bang CRMEB Java list sql injection CVSS 3.1HIGH 7.2
- TI-2026-00930 CRMEB JSON Token LoginServices.php remoteRegister improper authentication CVSS 4.0MEDIUM 6.3
Sources
- CVE-2020-21787 · CVE Program
- CVE-2020-21787 · NVD
- FIRST EPSS
- GHSA-gmrc-j4q4-6cv6 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences