CVE-2021-46686 Command injection in acmailer CGI
Attackers can execute arbitrary OS commands via improper neutralization in acmailer CGI and DB products.
- 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-2021-46686?
CVE-2021-46686 is a critical command injection vulnerability in Extra Innovation Inc. acmailer CGI, published on 17 Feb 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Improper neutralization of special elements used in an OS command ('OS Command Injection') issue exists in acmailer CGI ver.4.0.3 and earlier and acmailer DB ver.1.1.5 and earlier. If this vulnerability is exploited, an arbitrary OS command may be executed by an attacker.
Weakness: CWE-78
Which versions are affected by CVE-2021-46686?
How do I fix CVE-2021-46686?
No fix has been published for CVE-2021-46686 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-2021-46686 being exploited?
There is no known exploitation of CVE-2021-46686 in the wild and no public exploit code.
Sources
Also known as GHSA-5mr4-h7fw-j3h9.