CVE-2020-37123 Pinger 1.0 - Remote Code Execution
Attackers can execute arbitrary system commands and write PHP files via unsanitized input in the ping and socket parameters of Pinger.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2020-37123?
CVE-2020-37123 is a critical command injection vulnerability in wcchandler Pinger, published on 5 Feb 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Weakness: CWE-78
Which versions are affected by CVE-2020-37123?
How do I fix CVE-2020-37123?
No fix has been published for CVE-2020-37123 yet. Limit exposure of the affected software until one is available.
Upgrade, and pass arguments to programs as a list instead of through a shell. More about Command injection.
Is CVE-2020-37123 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2020-37123 exists.
Public exploit code: 1 Nuclei template.
Sources
Also known as GHSA-mxm5-68jf-rh35.