What is CVE-2020-37123?

CVE-2020-37123 is a critical-severity vulnerability in Wcchandler Pinger, classified under OS Command Injection. CVSS score: 9.8/10. Published 2026-02-05.

How severe is CVE-2020-37123?

Critical severity. CVSS v3 base score is 9.8 out of 10.

RCE in Wcchandler Pinger

CVE-2020-37123

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.

Vulnerability class: Command Injection (OS Command Injection)

EPSS: 0.031 (86.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Wcchandler Pinger — versions 1.0

Weakness classification (CWE)

CWE-78 — OS Command Injection

References

disclosure@vulncheck.com (exploit)
disclosure@vulncheck.com (product)
disclosure@vulncheck.com (third-party-advisory)

Frequently asked questions

What is CVE-2020-37123?: CVE-2020-37123 is a critical-severity vulnerability in Wcchandler Pinger, classified under OS Command Injection. CVSS score: 9.8/10. Published 2026-02-05.
How severe is CVE-2020-37123?: Critical severity. CVSS v3 base score is 9.8 out of 10.