CVE-2021-46686

Severity: critical (CVSS 9.8 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2025-02-18 · updated 2026-06-17
Weakness: CWE-78

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.

Affected products

Extra Innovation Inc. acmailer CGI: through ver.4.0.3
Extra Innovation Inc. acmailer DB: through ver.1.1.5

References

https://acmailer.jp/info/de.cgi?id=103
https://jvn.jp/en/jp/JVN96957439/
https://www.acmailer.jp/info/de.cgi?id=102

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