What is the CVSS score of CVE-2021-40189?

CVE-2021-40189 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: 1.7%.

Is there a public PoC exploit available for CVE-2021-40189?

Yes, a public proof-of-concept exploit is available for CVE-2021-40189. Prioritise patching immediately. EPSS: 1.7%.

Phpfusion CVE-2021-40189

HIGH

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

2021-10-11 cve@mitre.org

RCE File Upload Phpfusion

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

Oct 11, 2021 - 19:15 nvd

HIGH 7.2

DescriptionNVD

PHPFusion 9.03.110 is affected by a remote code execution vulnerability. The theme function will extract a file to "webroot/themes/{Theme Folder], where an attacker can access and execute arbitrary code.

AnalysisAI

PHPFusion 9.03.110 is affected by a remote code execution vulnerability. 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. PHPFusion 9.03.110 is affected by a remote code execution vulnerability. The theme function will extract a file to "webroot/themes/{Theme Folder], where an attacker can access and execute arbitrary code. Affected products include: Php-Fusion Phpfusion.

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.