What is the CVSS score of CVE-2021-28173?

CVE-2021-28173 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: 1.6%.

Deltaflow CVE-2021-28173

CRITICAL

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

2021-04-06 twcert@cert.org.tw

File Upload Deltaflow

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

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

CVE Published

Apr 06, 2021 - 12:15 nvd

CRITICAL 9.8

DescriptionNVD

The file upload function of Vangene deltaFlow E-platform does not perform access controlled properly. Remote attackers can upload and execute arbitrary files without login.

AnalysisAI

The file upload function of Vangene deltaFlow E-platform does not perform access controlled properly. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. 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. The file upload function of Vangene deltaFlow E-platform does not perform access controlled properly. Remote attackers can upload and execute arbitrary files without login. Affected products include: Deltaflow Project Deltaflow.

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.