CVE-2026-80097
HIGH 8.6 ALL-YEARSImproper authentication in Microsoft Authenticator allows an unauthorized attacker to elevate privileges locally.
Severe if exploited (CVSS 8.6), but no confirmed exploitation. Patch on a normal cadence.
Exploitation likelihood
0.4%chance of exploitation in 30 days · 38th percentile
Impact if exploited
8.6CVSS 3.1 · HIGH · CNA
- ConfidentialityHigh
- IntegrityHigh
- AvailabilityHigh
What an attacker needs
- ⚠Access: Requires local access to the host
- ✓Privileges: No account or privileges required
- ⚠User interaction: A user must take an action (click / open a file)
- ✓Complexity: No special conditions — reliably repeatable
✓ lowers the bar for an attacker · ⚠ raises it
Proof of concept
No public PoC is currently catalogued.
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Tracked sources are checked weekly for the full archive, including PoCs published after the original disclosure. A later release appears after a tracked source lists it and a refresh succeeds.
Weakness (CWE)
- CWE-287: : Improper Authentication
CVSS vector
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
References and research data (JSON)
Known Affected Software Configurations
| Vendor | Product | Version range |
|---|---|---|
| Microsoft | Authenticator | < 6.2606.4246 |
All CVSS metrics
- HIGH 8.6 v3.1 · CNA Primary
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 - HIGH 8.6 v3.1 · NVD Secondary
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
References
Patches & mitigations
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-80097 CVE record · microsoft · Updated 2026-10-14T23:09:11.812Z
NVD · CVE-2026-80097 · Updated 2026-09-24T12:59:50.470
Advisories
- https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-73327 EUVD · EUVD-2026-73327
Sources: NVD · CVE.org · All sources and attribution · EPSS