What is the CVSS score of CVE-2020-36877?

CVE-2020-36877 has a CVSS 4.0 base score of 9.3 (Critical). CVSS vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N. EPSS exploitation probability: 0.6%.

Is there a public PoC exploit available for CVE-2020-36877?

Yes, a public proof-of-concept exploit is available for CVE-2020-36877. Prioritise patching immediately. EPSS: 0.6%.

How to fix or mitigate CVE-2020-36877?

Within 24 hours: Identify all instances of ReQuest Serious Play F3 Media Server 7.0.3 in your environment and isolate them from production networks if possible; implement network-level access restrictions to limit exposure. Within 7 days: Deploy compensating controls (WAF rules blocking file uploads to vulnerable endpoints, disable the Quick File Uploader feature if operationally feasible). Within 30 days: Evaluate alternative media server solutions and develop a migration plan away from this unsupported software; if continued use is necessary, implement segmentation with strict access controls and enhanced monitoring.

PHP CVE-2020-36877

EUVD-2020-30827 CRITICAL

OS Command Injection (CWE-78)

2025-12-05 disclosure@vulncheck.com

PHP Command Injection RCE

9.3

CVSS 4.0 · NVD

Severity by source

NVD PRIMARY

9.3 CRITICAL

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Lifecycle Timeline

EUVD ID Assigned

Mar 15, 2026 - 17:08 euvd

EUVD-2020-30827

Analysis Generated

Mar 15, 2026 - 17:08 vuln.today

PoC Detected

Dec 08, 2025 - 18:26 vuln.today

Public exploit code

CVE Published

Dec 05, 2025 - 18:15 nvd

CRITICAL 9.3

DescriptionCVE.org

ReQuest Serious Play F3 Media Server 7.0.3 contains an unauthenticated remote code execution vulnerability that allows attackers to execute arbitrary commands as the web server user. Attackers can upload PHP executable files via the Quick File Uploader page, resulting in remote code execution on the server.

Analysis

Technical ContextAI

Command injection allows an attacker to execute arbitrary OS commands on the host system through a vulnerable application that passes user input to system shells. This vulnerability is classified as OS Command Injection (CWE-78).

RemediationAI

Avoid passing user input to system commands. Use language-specific APIs instead of shell commands. If unavoidable, use strict input validation and escaping.

More from same product – last 7 days

CVE-2026-49952 CRITICAL Act Now POC

9.3 Jun 15

Authentication bypass in Discuz! X5.0 releases 20260320 through 20260501 allows unauthenticated remote attackers to acce

CVE-2026-49954 HIGH This Week POC

8.6 Jun 15

Authenticated remote code execution in Discuz! X5.0 releases 20260320 through 20260501 allows administrators to chain a

CVE-2026-49768 CRITICAL Act Now

9.8 Jun 15

Unauthenticated PHP Object Injection in the Happyforms WordPress plugin (versions <= 1.26.13) allows remote attackers to

CVE-2026-27053 CRITICAL Act Now

9.8 Jun 15

Unauthenticated PHP Object Injection in the Broadcast Live Video WordPress plugin (versions prior to 7.1.3) allows remot

CVE-2026-49104 CRITICAL Act Now

9.8 Jun 15

Unauthenticated PHP object injection in the WordPress plugin 'Integration for Keap/Infusionsoft and Contact Form 7, WPFo

CVE-2020-36877 vulnerability details – vuln.today

Back

PHP CVE-2020-36877

Severity by source

CVSS VectorNVD

Lifecycle Timeline

DescriptionCVE.org

Analysis

Technical ContextAI

RemediationAI

More from same product – last 7 days

Share

External POC / Exploit Code