What is the CVSS score of CVE-2020-36973?

CVE-2020-36973 has a CVSS 3.1 base score of 6.5 (Medium). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N. EPSS exploitation probability: 0.1%.

Which versions of PHP are affected by CVE-2020-36973?

Organizations using PDW File Browser 1.3 should be aware of notable risk from CVE-2020-36973, a unrestricted file upload vulnerability rated CVSS 6.5. This could allow unauthorized file access.

Is there a public PoC exploit available for CVE-2020-36973?

Yes, a public proof-of-concept exploit is available for CVE-2020-36973. Prioritise patching immediately. EPSS: 0.1%.

How to fix or mitigate CVE-2020-36973?

Within 30 days: Identify affected systems and apply vendor patches as part of regular patch cycle. Review file handling controls.

PHP CVE-2020-36973

MEDIUM

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

2026-01-28 disclosure@vulncheck.com

PHP RCE Path Traversal

6.5

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

6.5 MEDIUM

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

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

None

Lifecycle Timeline

Analysis Generated

Mar 12, 2026 - 21:54 vuln.today

PoC Detected

Jan 29, 2026 - 16:31 vuln.today

Public exploit code

CVE Published

Jan 28, 2026 - 18:16 nvd

MEDIUM 6.5

DescriptionCVE.org

PDW File Browser 1.3 contains a remote code execution vulnerability that allows authenticated users to upload and rename webshell files to arbitrary web server locations. Attackers can upload a .txt webshell, rename it to .php, and move it to accessible directories using double-encoded path traversal techniques.

AnalysisAI

PDW File Browser 1.3 contains a remote code execution vulnerability that allows authenticated users to upload and rename webshell files to arbitrary web server locations. [CVSS 6.5 MEDIUM]

Technical ContextAI

Classified as CWE-434 (Unrestricted Upload of File with Dangerous Type). PDW File Browser 1.3 contains a remote code execution vulnerability that allows authenticated users to upload and rename webshell files to arbitrary web server locations. Attackers can upload a .txt webshell, rename it to .php, and move it to accessible directories using double-encoded path traversal techniques.

Affected ProductsAI

PDW File Browser 1.3 contains a remote code execution vulnerability that allows authenticated users to upload and rename webshell files to arbitrary w

RemediationAI

Monitor vendor advisories for a patch. Validate and sanitize file path inputs. Use allowlists. Restrict network access to the affected service where possible.