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Vulnerabilities

Vulnerability · CVE-2020-37123

Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

Published Mar 16, 2026 · catalog updated Mar 16, 2026 · Pinger

Patch now

CVE-2020-37123 is in the CISA known-exploited catalog. Confirm Pinger against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Gaps on this record

  • No version range is stored. A customer cannot check an installed version against this record.
Severity
Unknown—
Known exploitation
CISA KEV and VulnCheck KEV
EPSS
3.40%
Remediation
Remediation guidance
Affected products
vendor wcchandler Pinger

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.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • vendor wcchandler Pingerversion unspecified

How to fix CVE-2020-37123

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

CVE-2020-37123 is in the CISA known-exploited catalog. Confirm Pinger against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Which versions are affected?

Affected version ranges are not on this record. Apply remediations or mitigations per vendor instructions or discontinue use of the product if remediation or mitigations are unavailable.

What should an analyst verify?

No weakness class is stored. EPSS 3.40%. The CISA KEV listing is the exploitation evidence. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Mar 16, 2026 · VulnCheck KEV

    Detected

    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.

  2. Mar 16, 2026 · CISA KEV

    Known exploited

    Apply remediations or mitigations per vendor instructions or discontinue use of the product if remediation or mitigations are unavailable.

Sources

  • CVE.orgVulnerability recordCVE-2020-37123

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2020-37123

    30-day exploitation probability 3.4%

    first.org
  • VulnCheck KEVConfirmed exploitationCVE-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 met

    vulncheck.com

References

Freshness

Last verified in this catalog Oct 17, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.