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.

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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.
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