HSTS Handler Vulnerability in Comodo Dragon Browser
CVE-2025-8204

2.3LOW

Key Information:

Vendor

Comodo

Status
Dragon
Vendor
CVE Published:
26 July 2025

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2025-8204?

A notable vulnerability has been identified in Comodo Dragon browser versions up to 134.0.6998.179, specifically concerning the HSTS Handler component. Due to an unknown functionality, attackers may manipulate security checks for standard implementations, allowing for potential compromise. This vulnerability is particularly concerning as it can be exploited remotely, although the complexity of executing such an attack remains high. The exploit has been publicly revealed, emphasizing the urgency for users to apply necessary updates or patches. Despite early notification, the vendor has not provided a response regarding this critical issue.

Affected Version(s)

Dragon 134.0.6998.179

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2025-8204 - Proof of Concept

References

https://vuldb.com/?id.317773
vdb-entrytechnical-description
https://vuldb.com/?ctiid.317773
signaturepermissions-required
https://vuldb.com/?submit.615647
third-party-advisory

CVSS V4

Score:
2.3
Severity:
LOW
Confidentiality:
None
Integrity:
Low
Availability:
None
Attack Vector:
Network
Attack Complexity:
High
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
Unknown

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

PhongXuan-FPT-Metrodata-Indonesia (VulDB User)
.
CVE-2025-8204 : HSTS Handler Vulnerability in Comodo Dragon Browser