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CVE-2026-26123

Microsoft Authenticator Information Disclosure Vulnerability

MEDIUM
5.5
CVSS Score
Published: March 10, 2026 at 07:01 PM UTC
Updated: June 17, 2026 at 10:25 AM UTC
1 product affected across 1 vendorAuthenticator

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Severity
MEDIUM5.5
Exploit prediction
EPSS 0.6%
SSVC
No known exploit

Description

Cwe is not in rca categories in Microsoft Authenticator allows an unauthorized attacker to disclose information locally.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Authenticator· Microsoft
95%
v < 6.2511.7533v < 6.8.406.0.0 ≤ v < 6.2511.75336.0.0 ≤ v < 6.8.406.0.0
Affected range stops below 6.2511.7533, so it looks safe — our inference, not a vendor statement
Affected range stops below 6.8.40, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (1)

Vendor AdvisoryPatch
Source: cverecord
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-26123

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

5.5MEDIUMmicrosoft
Vector?

Quick Info

StatusANALYZED
CWE
CWE-939NVD-CWE-noinfo

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