What is the CVSS score of CVE-2020-37123?

CVE-2020-37123 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: 12.2%.

Which versions of PHP are affected by CVE-2020-37123?

Pinger 1.0 contains a critical remote code execution vulnerability (CVSS 9.8) that allows unauthenticated attackers to execute arbitrary commands on affected servers.

Is there a public PoC exploit available for CVE-2020-37123?

Yes, a public proof-of-concept exploit is available for CVE-2020-37123. Prioritise patching immediately. EPSS: 12.2%.

How to fix or mitigate CVE-2020-37123?

Within 24 hours: Identify all systems running Pinger 1.0 and isolate them from production networks or disable internet-facing access. Within 7 days: Deploy network-based mitigations (WAF rules blocking shell metacharacters in ping/socket parameters), implement input validation at the application layer, or disable the affected ping functionality entirely if operationally feasible. Within 30 days: Migrate to an alternative solution, upgrade to a patched version if released, or decommission the application and retire Pinger 1.0 from your environment.

PHP CVE-2020-37123

CRITICAL

OS Command Injection (CWE-78)

2026-02-05 disclosure@vulncheck.com

PHP RCE

9.8

CVSS 3.1

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

Analysis Generated

Mar 12, 2026 - 21:55 vuln.today

PoC Detected

Feb 05, 2026 - 20:47 vuln.today

Public exploit code

CVE Published

Feb 05, 2026 - 17:16 nvd

CRITICAL 9.8

DescriptionNVD

Pinger 1.0 contains a remote code execution vulnerability that allows attackers to inject shell commands through the ping and socket parameters. Attackers can exploit the unsanitized input in ping.php to write arbitrary PHP files and execute system commands by appending shell metacharacters.

AnalysisAI

Remote code execution via OS command injection in Pinger 1.0 allows attackers to inject shell commands through the ping target parameter. EPSS 12.2% indicates significant exploitation likelihood. PoC available.

Technical ContextAI

CWE-78 OS command injection. User-supplied ping target is passed directly to a system shell command without sanitization, enabling arbitrary command execution.

Affected ProductsAI

Pinger 1.0

RemediationAI

Use parameterized system calls instead of shell execution. Validate input against IP address/hostname patterns.

CVE-2020-37123 vulnerability details – vuln.today

Back

PHP CVE-2020-37123

CVSS VectorNVD

Lifecycle Timeline

DescriptionNVD

AnalysisAI

Technical ContextAI

Affected ProductsAI

RemediationAI

Share

External POC / Exploit Code