What is CVE-2024-21364?

CVE-2024-21364 is a critical-severity vulnerability in Microsoft Azure Site Recovery, classified under Improper Access Control. CVSS score: 9.3/10. Published 2024-02-13.

How severe is CVE-2024-21364?

Critical severity. CVSS v3 base score is 9.3 out of 10.

Vulnerability in Microsoft Azure Site Recovery

CVE-2024-21364

Microsoft Azure Site Recovery Elevation of Privilege Vulnerability

Published 2024-02-13 · last modified 2026-08-10.

CVSS v3 metric

CVSS v3 base score 9.3 (Critical). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.006 (49.0th percentile), scored 2026-10-25.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 49th percentile — 49.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: 0.000

Affected products

Microsoft Azure Site Recovery — versions 2021
Microsoft Azure Site Recovery

Weakness classification (CWE)

CWE-284 — Improper Access Control

References

msrc.microsoft.com/update-guide/vulnerability/CVE-2024-21364 (vendor-advisory, Patch, patch, Vendor Advisory)

Frequently asked questions

What is CVE-2024-21364?: CVE-2024-21364 is a critical-severity vulnerability in Microsoft Azure Site Recovery, classified under Improper Access Control. CVSS score: 9.3/10. Published 2024-02-13.
How severe is CVE-2024-21364?: Critical severity. CVSS v3 base score is 9.3 out of 10.