How severe is CVE-2026-35438?

CVE-2026-35438 has a CVSS 3.x base score of 8.3, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity high, and availability high.

Is CVE-2026-35438 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (42nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-35438?

CVE-2026-35438 affects Microsoft Windows Admin Center. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-35438?

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-2026-35438 have an EU (EUVD) identifier?

Yes. CVE-2026-35438 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-29636.

When was CVE-2026-35438 published?

CVE-2026-35438 was published on 2026-05-12 and last updated on 2026-06-17.

CVE-2026-35438

CVE-2026-35438 is a high-severity vulnerability in Microsoft Windows Admin Center with a CVSS 3.x base score of 8.3. 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-862.

Key facts

Severity: High (CVSS 3.x base score 8.3)
EPSS exploit prediction: 1% (42nd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-29636
Weakness: CWE-862
Affected product: Microsoft Windows Admin Center
Published: 2026-05-12
Last modified: 2026-06-17

Description

Missing authorization in Windows Admin Center allows an authorized attacker to elevate privileges over a network.

Frequently asked questions

What is CVE-2026-35438?: Missing authorization in Windows Admin Center allows an authorized attacker to elevate privileges over a network.
How severe is CVE-2026-35438?: CVE-2026-35438 has a CVSS 3.x base score of 8.3, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity high, and availability high.
Is CVE-2026-35438 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (42nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-35438?: CVE-2026-35438 affects Microsoft Windows Admin Center. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-35438?: 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-2026-35438 have an EU (EUVD) identifier?: Yes. CVE-2026-35438 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-29636.
When was CVE-2026-35438 published?: CVE-2026-35438 was published on 2026-05-12 and last updated on 2026-06-17.

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-35438

Affected products (1)

cpe:2.3:a:microsoft:windows_admin_center:*:*:*:*:*:*:*:*

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