How severe is CVE-2023-43763?

CVE-2023-43763 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2023-43763 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (23rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-43763?

CVE-2023-43763 primarily affects Withsecure F-secure Policy Manager. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2023-43763?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2023-43763 published?

CVE-2023-43763 was published on 2023-09-22 and last updated on 2026-06-17.

CVE-2023-43763

CVE-2023-43763 is a medium-severity vulnerability in Withsecure F-secure Policy Manager with a CVSS 3.x base score of 6.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-79.

Key facts

Severity: Medium (CVSS 3.x base score 6.1)
EPSS exploit prediction: 0% (23rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Withsecure F-secure Policy Manager
Published: 2023-09-22
Last modified: 2026-06-17

Description

Certain WithSecure products allow XSS via an unvalidated parameter in the endpoint. This affects WithSecure Policy Manager 15 on Windows and Linux.

Frequently asked questions

What is CVE-2023-43763?: Certain WithSecure products allow XSS via an unvalidated parameter in the endpoint. This affects WithSecure Policy Manager 15 on Windows and Linux.
How severe is CVE-2023-43763?: CVE-2023-43763 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2023-43763 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (23rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-43763?: CVE-2023-43763 primarily affects Withsecure F-secure Policy Manager. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2023-43763?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2023-43763 published?: CVE-2023-43763 was published on 2023-09-22 and last updated on 2026-06-17.

References

Affected products (2)

cpe:2.3:a:withsecure:f-secure_policy_manager:15.00:*:*:*:*:linux_kernel:*:*
cpe:2.3:a:withsecure:f-secure_policy_manager:15.00:*:*:*:*:windows:*:*

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