What is the CVSS score of CVE-2020-23520?

CVE-2020-23520 has a CVSS 3.1 base score of 7.2 (High). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H. EPSS exploitation probability: 2.2%.

Is there a public PoC exploit available for CVE-2020-23520?

Yes, a public proof-of-concept exploit is available for CVE-2020-23520. Prioritise patching immediately. EPSS: 2.2%.

Imcat CVE-2020-23520

HIGH

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

2020-12-09 cve@mitre.org

File Upload RCE Imcat

7.2

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

7.2 HIGH

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

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Attack Vector

Network

Attack Complexity

Low

Privileges Required

High

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

CVE Published

Dec 09, 2020 - 16:15 nvd

HIGH 7.2

DescriptionNVD

imcat 5.2 allows an authenticated file upload and consequently remote code execution via the picture functionality.

AnalysisAI

imcat 5.2 allows an authenticated file upload and consequently remote code execution via the picture functionality. Rated high severity (CVSS 7.2), this vulnerability is remotely exploitable, 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. imcat 5.2 allows an authenticated file upload and consequently remote code execution via the picture functionality. Affected products include: Txjia Imcat.

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.