CVE-2020-23564 json
File Upload vulnerability in SEMCMS 3.9 allows remote attackers to run arbitrary code via SEMCMS_Upfile.php.
published 2023-08-05 3 y ago modified 2026-06-17 4 mo ago also EUVD-2020-16308
- cvss
- 7.2
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.1%
- EPSS 1.1% chance of exploitation in 30 days, percentile 66%
- public exploits
- 0
- none known
Summary
File Upload vulnerability in SEMCMS 3.9 allows remote attackers to run arbitrary code via SEMCMS_Upfile.php.
CISA SSVC
- Exploitation
- Proof of concept is public
- Automatable
- no
- Technical impact
- total
- Assessed
- 2 y ago
Exploit prediction
1.12% chance of exploitation in the next 30 days, higher than 66% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- github.com https://github.com/a1ertx55/cmstest/blob/master/semcms.md referenced PoC, tagged "exploit" by a source, unverified
- github.com https://github.com/a1ertx55/cmstest/blob/main/semcms.md referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 7.2 | CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H |
Classification
- Weakness
-
- CWE-434 Unrestricted Upload of File with Dangerous Type
References
-
github.com
/a1ertx55/cmstest/blob/master/semcms.md
exploit, third-party-advisory
-
github.com
/a1ertx55/cmstest/blob/main/semcms.md
exploit, third-party-advisory
Sources
- CVE List CVE-2020-23564
- NVD CVE-2020-23564
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