What is the CVSS score of CVE-2021-43117?

CVE-2021-43117 has a CVSS 3.1 base score of 9.8 (Critical). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H. EPSS exploitation probability: 2.1%.

Is there a public PoC exploit available for CVE-2021-43117?

Yes, a public proof-of-concept exploit is available for CVE-2021-43117. Prioritise patching immediately. EPSS: 2.1%.

Fastadmin CVE-2021-43117

CRITICAL

Unrestricted Upload of File with Dangerous Type (CWE-434)

2021-12-13 cve@mitre.org

RCE File Upload Fastadmin

9.8

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

9.8 CRITICAL

AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

CVE Published

Dec 13, 2021 - 12:15 nvd

CRITICAL 9.8

DescriptionNVD

fastadmin v1.2.1 is affected by a file upload vulnerability which allows arbitrary code execution through shell access.

AnalysisAI

fastadmin v1.2.1 is affected by a file upload vulnerability which allows arbitrary code execution through shell access. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.

Technical ContextAI

This vulnerability is classified as Unrestricted File Upload (CWE-434), which allows attackers to upload malicious files that can be executed on the server. fastadmin v1.2.1 is affected by a file upload vulnerability which allows arbitrary code execution through shell access. Affected products include: Fastadmin.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Validate file types server-side, store uploads outside webroot, use random filenames, scan for malware.