CVE-2020-21861
CVE-2020-21861 is a high-severity vulnerability in Duxcms Project Duxcms with a CVSS 3.x base score of 8.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-434.
Key facts
- Severity: High (CVSS 3.x base score 8.8)
- EPSS exploit prediction: 1% (49th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-434
- Affected product: Duxcms Project Duxcms
- Published:
- Last modified:
Description
File upload vulnerability in DuxCMS 2.1 allows attackers to execute arbitrary php code via duxcms/AdminUpload/upload.
Frequently asked questions
- What is CVE-2020-21861?
- File upload vulnerability in DuxCMS 2.1 allows attackers to execute arbitrary php code via duxcms/AdminUpload/upload.
- How severe is CVE-2020-21861?
- CVE-2020-21861 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2020-21861 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (49th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2020-21861?
- CVE-2020-21861 affects Duxcms Project Duxcms. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2020-21861?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
- When was CVE-2020-21861 published?
- CVE-2020-21861 was published on 2023-07-06 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:a:duxcms_project:duxcms:2.1:*:*:*:*:*:*:*
More vulnerabilities in Duxcms Project Duxcms
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- CVE-2020-21881 — Medium (CVSS 6.5): Cross Site Request Forgery (CSRF) vulnerability in admin.php in DuxCMS 2.1 allows remote attackers to modtify…
- CVE-2020-36763 — Medium (CVSS 5.4): Cross Site Scripting (XSS) vulnerability in DuxCMS 2.1 allows remote attackers to run arbitrary code via the content,…
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