File Upload vulnerability in SEMCMS 3.9 allows remote attackers to run arbitrary code via SEMCMS_Upfile.php.
Priority HIGH 67CWE-434Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- High
- 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
File Upload vulnerability in SEMCMS 3.9 allows remote attackers to run arbitrary code via SEMCMS_Upfile.php.
Why it matters now
Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.01122 66th percentileScored 2026-11-07
Public exploit Yes 2 exploit referencesTagged by NVD
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
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
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2020-23564
- 2026-10-03 Alias added: GHSA-hh33-x9h6-xp68
References
More Sem-cms Semcms vulnerabilities
- TI-2024-20439 An issue was discovered in SEMCMS v.4.8, allows remote attackers to execute arbitrary… CVSS 3.1CRITICAL 9.8
- TI-2024-20402 SQL Injection vulnerability in SEMCMS v.4.8 allows a remote attacker to obtain sensitive… CVSS 3.1CRITICAL 9.8
- TI-2021-16297 SEMCMS v 1.1 is vulnerable to SQL Injection via Ant_Pro.php. CVSS 3.1CRITICAL 9.8
- TI-2021-16296 SEMCMS Shop V 1.1 is vulnerable to SQL Injection via Ant_Global.php. CVSS 3.1CRITICAL 9.8
- TI-2021-16295 SEMCMS SHOP v 1.1 is vulnerable to SQL Injection via Ant_Menu.php. CVSS 3.1CRITICAL 9.8
- TI-2021-16291 SEMCMS SHOP v 1.1 is vulnerable to SQL Injection via Ant_Info.php. CVSS 3.1CRITICAL 9.8
Sources
- CVE-2020-23564 · CVE Program
- CVE-2020-23564 · NVD
- FIRST EPSS
- GHSA-hh33-x9h6-xp68 · 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