What is CVE-2025-64655?

CVE-2025-64655 is a high-severity vulnerability in Microsoft Dynamics Omnichannel Sdk Storage Containers, classified under Improper Authorization. CVSS score: 8.8/10. Published 2025-11-20.

How severe is CVE-2025-64655?

High severity. CVSS v3 base score is 8.8 out of 10.

Auth bypass in Microsoft Dynamics Omnichannel Sdk Storage Containers

CVE-2025-64655

Improper authorization in Dynamics OmniChannel SDK Storage Containers allows an unauthorized attacker to elevate privileges over a network.

Published 2025-11-20 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.005 (39.8th percentile), scored 2026-10-04.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 40th percentile — 39.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000

Affected products

Weakness classification (CWE)

CWE-285 — Improper Authorization

References

msrc.microsoft.com/update-guide/vulnerability/CVE-2025-64655 (vendor-advisory, patch, Vendor Advisory)

Frequently asked questions

What is CVE-2025-64655?: CVE-2025-64655 is a high-severity vulnerability in Microsoft Dynamics Omnichannel Sdk Storage Containers, classified under Improper Authorization. CVSS score: 8.8/10. Published 2025-11-20.
How severe is CVE-2025-64655?: High severity. CVSS v3 base score is 8.8 out of 10.