Security Digest · Vulnerability record
CVE-2026-80097: Microsoft Authenticator Elevation of Privilege Vulnerability
Improper authentication in Microsoft Authenticator allows an unauthorized attacker to elevate privileges locally.
CVSS 8.6 High EPSS 0.5% · p45 Most can relax
Should you act?
Normal patch cycle
No exploitation signal; fix it in your next routine update if you are affected. This signal is computed from CISA KEV, EPSS and CVSS data; it is not an editorial verdict.
- No confirmed exploitation. It is not in CISA’s KEV catalog and CISA’s SSVC assessment records no known exploitation. That can change quickly after a public write-up; re-check if you are affected.
- EPSS 0.5%, percentile 45: FIRST’s model estimates a 0.5% chance of exploitation activity in the next 30 days, higher than 45% of all scored CVEs (low). EPSS is a probability, not a verdict.
- Needs local access needed. Lower urgency for most teams unless an attacker could already run code on the machine.
- Editorial verdict: Most can relax. Microsoft Authenticator Android CVE-2026-80097 Token Theft — A serious design flaw with a public write-up, but it was fixed seven weeks ago and Microsoft reports no exploitation: confirm Android devices run Authenticator 6.2606.4246 or later and move on.
What it is
Improper authentication in Microsoft Authenticator allows an unauthorized attacker to elevate privileges locally.
Weakness type: CWE-287.
Product: Microsoft Microsoft Authenticator for Android · Assigned by: microsoft · Published: 2026-09-08
Affected and fixed versions
| Vendor | Product | Affected versions (per CVE record) |
|---|---|---|
| Microsoft | Microsoft Authenticator for Android | 6.0.0 < 6.2606.4246 |
Severity scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| microsoft | 3.1 | 8.6 High | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C |
- Attack vector: local access needed
- Attack complexity: low
- Privileges required: none (no login)
- User interaction: required (a user must click/open something)
- Scope: changed (can affect other components)
CVSS measures how bad a flaw is if exploited, not how likely exploitation is. Read it next to the exploitation data below.
Exploitation and urgency
- CISA KEV: not listed (no confirmed in-the-wild exploitation known to CISA).
- CISA SSVC assessment: exploitation none, automatable no, technical impact total.
- FIRST EPSS (model of 2026-11-04): 0.53% probability of exploitation activity in the next 30 days; percentile 45.
Timeline
- — CVE record published by microsoft
- — CVE record last updated
- — erroneo.us brief: Microsoft Authenticator Android CVE-2026-80097 Token Theft
Sources and references
Original sources first. Version and fix details should always be confirmed against the vendor or project advisory.
Vendor and project advisories, patches
- Microsoft Authenticator Elevation of Privilege Vulnerability msrc.microsoft.com
Vulnerability records
- CVE.org record CVE-2026-80097 cve.org
- NVD entry CVE-2026-80097 nvd.nist.gov