How severe is CVE-2026-3999?

CVE-2026-3999 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-3999 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (24th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-3999?

CVE-2026-3999 affects Pointsharp Id Server. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-3999?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2026-3999 have an EU (EUVD) identifier?

Yes. CVE-2026-3999 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-11772.

When was CVE-2026-3999 published?

CVE-2026-3999 was published on 2026-03-13 and last updated on 2026-06-17.

CVE-2026-3999

CVE-2026-3999 is a high-severity vulnerability in Pointsharp Id Server with a CVSS 3.x base score of 8.8. 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-639.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v4: 8.8
EPSS exploit prediction: 0% (24th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-11772
Weakness: CWE-639
Affected product: Pointsharp Id Server
Published: 2026-03-13
Last modified: 2026-06-17

Description

A broken access control may allow an authenticated user to perform a horizontal privilege escalation. The vulnerability only impacts specific configurations.

Frequently asked questions

What is CVE-2026-3999?: A broken access control may allow an authenticated user to perform a horizontal privilege escalation. The vulnerability only impacts specific configurations.
How severe is CVE-2026-3999?: CVE-2026-3999 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-3999 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (24th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-3999?: CVE-2026-3999 affects Pointsharp Id Server. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-3999?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2026-3999 have an EU (EUVD) identifier?: Yes. CVE-2026-3999 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-11772.
When was CVE-2026-3999 published?: CVE-2026-3999 was published on 2026-03-13 and last updated on 2026-06-17.

References

https://docs.pointsharp.com/psa/advisories/psa-2026-001.html

Affected products (1)

cpe:2.3:a:pointsharp:id_server:*:*:*:*:*:*:*:*

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