How severe is CVE-2026-23663?

CVE-2026-23663 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2026-23663 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-2026-23663?

CVE-2026-23663 affects Microsoft Global Secure Access. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-23663?

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-2026-23663 have an EU (EUVD) identifier?

Yes. CVE-2026-23663 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-31521.

When was CVE-2026-23663 published?

CVE-2026-23663 was published on 2026-05-22 and last updated on 2026-06-17.

CVE-2026-23663

CVE-2026-23663 is a high-severity vulnerability in Microsoft Global Secure Access with a CVSS 3.x base score of 7.5. 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-269.

Key facts

Severity: High (CVSS 3.x base score 7.5)
EPSS exploit prediction: 1% (42nd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-31521
Weakness: CWE-269
Affected product: Microsoft Global Secure Access
Published: 2026-05-22
Last modified: 2026-06-17

Description

Improper privilege management in Azure Entra ID allows an unauthorized attacker to elevate privileges over a network.

Frequently asked questions

What is CVE-2026-23663?: Improper privilege management in Azure Entra ID allows an unauthorized attacker to elevate privileges over a network.
How severe is CVE-2026-23663?: CVE-2026-23663 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2026-23663 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-2026-23663?: CVE-2026-23663 affects Microsoft Global Secure Access. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-23663?: 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-2026-23663 have an EU (EUVD) identifier?: Yes. CVE-2026-23663 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-31521.
When was CVE-2026-23663 published?: CVE-2026-23663 was published on 2026-05-22 and last updated on 2026-06-17.

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-23663

Affected products (1)

cpe:2.3:a:microsoft:global_secure_access:-:*:*:*:*:*:*:*

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