Authentication weaknesses
The application does not reliably check that someone is who they claim to be.
CWE-287 · NVD record: secure@microsoft.com
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Not on CISA's list.
CVE-2026-80097
Published 2026-09-08
How bad would it be?
8.6 out of 10
CVSS rates it high.
How likely is it to be used?
0.5%
Estimated chance of exploitation in the next 30 days, higher than 44% of all scored flaws (EPSS, 2026-10-29).
Is it already being used?
Not confirmed
It isn't on CISA's list. That doesn't prove nobody uses it: CISA only lists exploitation it has confirmed.
What the flaw is
Improper authentication in Microsoft Authenticator allows an unauthorized attacker to elevate privileges locally.
From the NVD.
Fixes and advisories
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CWE is a catalogue of weakness types. Labels come from the sources shown and can differ or change. Resource matches reviewed 16 October 2026.
On SentryFeed
Exploited flaws from CISA's KEV catalogue. Chance of exploitation from EPSS by FIRST. Descriptions and scores from the NVD. This product uses the NVD API but is not endorsed or certified by the NVD.