What is the CVSS score of CVE-2020-22721?

CVE-2020-22721 has a CVSS 3.1 base score of 7.8 (High). CVSS vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H. EPSS exploitation probability: 0.5%.

Is there a public PoC exploit available for CVE-2020-22721?

Yes, a public proof-of-concept exploit is available for CVE-2020-22721. Prioritise patching immediately. EPSS: 0.5%.

Pnotes Net CVE-2020-22721

HIGH

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

2020-08-14 cve@mitre.org

File Upload RCE Pnotes Net

7.8

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

7.8 HIGH

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

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

CVE Published

Aug 14, 2020 - 16:15 nvd

HIGH 7.8

DescriptionNVD

AnalysisAI

A File Upload Vulnerability in PNotes - Andrey Gruber PNotes.NET v3.8.1.2 allows a local attacker to execute arbitrary code via the Miscellaneous " External Programs by uploading the malicious .exe. Rated high severity (CVSS 7.8), this vulnerability is 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. A File Upload Vulnerability in PNotes - Andrey Gruber PNotes.NET v3.8.1.2 allows a local attacker to execute arbitrary code via the Miscellaneous " External Programs by uploading the malicious .exe file to the external program. Affected products include: Pnotes.Net Project Pnotes.Net.

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.