Certain WithSecure products allow XSS via an unvalidated parameter in the endpoint.
Priority LOW 27CWE-79Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Cross-site scripting
- Confidentiality · integrity · availability
- Low · Low · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-79.
Summary
Certain WithSecure products allow XSS via an unvalidated parameter in the endpoint. This affects WithSecure Policy Manager 15 on Windows and Linux.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00357 29th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 2
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:withsecure:f-secure_policy_manager:15.00:*:*:*:*:linux_kernel:*:* | 15.00 | Vulnerable | WithSecure |
| cpe:2.3:a:withsecure:f-secure_policy_manager:15.00:*:*:*:*:windows:*:* | 15.00 | Vulnerable | WithSecure |
- cpe:2.3:a:withsecure:f-secure_policy_manager:15.00:*:*:*:*:linux_kernel:*:* Versions 15.00 Vulnerable ·WithSecure
- cpe:2.3:a:withsecure:f-secure_policy_manager:15.00:*:*:*:*:windows:*:* Versions 15.00 Vulnerable ·WithSecure
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2023-43763
- 2026-10-03 Alias added: GHSA-4c22-9q7h-jv2g
References
More WithSecure F-secure Policy Manager vulnerabilities
- TI-2023-23461 Certain WithSecure products allow Unauthenticated Remote Code Execution via the web… CVSS 3.1CRITICAL 9.8
- TI-2022-17863 Arbitrary file write in F-Secure Policy Manager through 2022-08-10 allows unauthenticated… CVSS 3.1CRITICAL 9.8
- TI-2022-17860 Reflected cross-site scripting (XSS) vulnerabilities in WithSecure through 2022-08-10)… CVSS 3.1MEDIUM 6.1
Sources
- CVE-2023-43763 · CVE Program
- CVE-2023-43763 · NVD
- FIRST EPSS
- GHSA-4c22-9q7h-jv2g · GitHub Advisory Database · CC BY 4.0
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