What is CVE-2026-24306?

CVE-2026-24306 is a critical-severity vulnerability in Microsoft Azure Front Door, classified under Improper Access Control. CVSS score: 9.8/10. Published 2026-01-22.

How severe is CVE-2026-24306?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Is CVE-2026-24306 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Vulnerability in Microsoft Azure Front Door

CVE-2026-24306

Improper access control in Azure Front Door (AFD) allows an unauthorized attacker to elevate privileges over a network.

Published 2026-01-22 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.009 (57.0th percentile), scored 2026-10-02.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 57th percentile — 57.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.008 · newest: 0.009 · change: +0.001

Affected products

Weakness classification (CWE)

CWE-284 — Improper Access Control

Public proof-of-concept exploits

ExploreUnknowed/CVE-2026-24306

References

Azure Front Door Elevation of Privilege Vulnerability (vendor-advisory, patch, Vendor Advisory)

Frequently asked questions

What is CVE-2026-24306?: CVE-2026-24306 is a critical-severity vulnerability in Microsoft Azure Front Door, classified under Improper Access Control. CVSS score: 9.8/10. Published 2026-01-22.
How severe is CVE-2026-24306?: Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2026-24306 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.