What is CVE-2026-80097?

CVE-2026-80097 is a high-severity vulnerability in Microsoft Authenticator, classified under Improper Authentication. CVSS score: 8.6/10. Published 2026-09-08.

How severe is CVE-2026-80097?

High severity. CVSS v3 base score is 8.6 out of 10.

Auth bypass in Microsoft Authenticator

CVE-2026-80097

Improper authentication in Microsoft Authenticator allows an unauthorized attacker to elevate privileges locally.

Vulnerability class: Broken Authentication

Published 2026-09-08 · last modified 2026-09-24.

CVSS v3 metric

CVSS v3 base score 8.6 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.004 (37.4th percentile), scored 2026-10-24.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 37th percentile — 37.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000

Affected products

Weakness classification (CWE)

CWE-287 — Improper Authentication

References

Microsoft Authenticator Elevation of Privilege Vulnerability (vendor-advisory, patch, Vendor Advisory)

Frequently asked questions

What is CVE-2026-80097?: CVE-2026-80097 is a high-severity vulnerability in Microsoft Authenticator, classified under Improper Authentication. CVSS score: 8.6/10. Published 2026-09-08.
How severe is CVE-2026-80097?: High severity. CVSS v3 base score is 8.6 out of 10.