Stored XSS in Forcepoint Web Security on Windows
CVE-2025-2274

4.8MEDIUM

Key Information:

Vendor

Forcepoint

Status
Web Security (on-prem)
Vendor
CVE Published:
16 March 2026

What is CVE-2025-2274?

An improperly handled input during the web page generation process in Forcepoint Web Security (On-Prem) on Windows allows attackers to exploit a stored Cross-Site Scripting vulnerability. This affects the product versions up to 8.5.6, enabling unauthorized scripts to be executed in users' browsers, which can lead to data theft and session hijacking.

Affected Version(s)

Web Security (On-Prem) Windows 0 <= 8.5.6

References

https://support.forcepoint.com/s/article/Security-Advisor...

CVSS V4

Score:
4.8
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
None
Attack Vector:
Adjacent Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
Unknown

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Majchrowicz, Zdunek and Marcin Wyczechowski from AFINE Team.
.