How severe is CVE-2026-23651?

CVE-2026-23651 has a CVSS 3.x base score of 6.7, rated medium severity. It is exploitable over local access with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-23651 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (44th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-23651?

CVE-2026-23651 affects Microsoft Aci Confidential Containers. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-23651?

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

Does CVE-2026-23651 have an EU (EUVD) identifier?

Yes. CVE-2026-23651 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-9886.

When was CVE-2026-23651 published?

CVE-2026-23651 was published on 2026-03-05 and last updated on 2026-06-17.

CVE-2026-23651

CVE-2026-23651 is a medium-severity vulnerability in Microsoft Aci Confidential Containers with a CVSS 3.x base score of 6.7. 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-625.

Key facts

Severity: Medium (CVSS 3.x base score 6.7)
EPSS exploit prediction: 1% (44th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-9886
Weakness: CWE-625
Affected product: Microsoft Aci Confidential Containers
Published: 2026-03-05
Last modified: 2026-06-17

Description

Permissive regular expression in Azure Compute Gallery allows an authorized attacker to elevate privileges locally.

Frequently asked questions

What is CVE-2026-23651?: Permissive regular expression in Azure Compute Gallery allows an authorized attacker to elevate privileges locally.
How severe is CVE-2026-23651?: CVE-2026-23651 has a CVSS 3.x base score of 6.7, rated medium severity. It is exploitable over local access with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-23651 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (44th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-23651?: CVE-2026-23651 affects Microsoft Aci Confidential Containers. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-23651?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-23651 have an EU (EUVD) identifier?: Yes. CVE-2026-23651 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-9886.
When was CVE-2026-23651 published?: CVE-2026-23651 was published on 2026-03-05 and last updated on 2026-06-17.

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-23651

Affected products (1)

cpe:2.3:a:microsoft:aci_confidential_containers:-:*:*:*:*:*:*:*

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