What is CVE-2026-26123?

CVE-2026-26123 is a security advisory published by Microsoft Security Response Center (MSRC) with High severity. Microsoft Authenticator Information Disclosure Vulnerability

Which CVE IDs does CVE-2026-26123 cover?

CVE-2026-26123 covers the following CVE IDs: CVE-2026-26123. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of CVE-2026-26123?

CVE-2026-26123 has a CVSS v3 base score of 5.5, published by Microsoft Security Response Center (MSRC).

Which products are affected by CVE-2026-26123?

CVE-2026-26123 affects 2 products, including: Microsoft Authenticator for Android; Microsoft Authenticator for IOS.

CVE-2026-26123HighCVSS 5.5

Microsoft Authenticator Information Disclosure Vulnerability

Vendor

Microsoft Security Response Center (MSRC)

Published

May 31, 2026

Last Modified

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🔗 CVE IDs covered (1)

CVE-2026-26123 →

📋 Description

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

🎯 Affected products2

Microsoft Authenticator for Android
Microsoft Authenticator for IOS

✅ Remediation

KBRelease Notes (Security Update) — fixed build 6.2511.7533 KBRelease Notes (Security Update) — fixed build 6.8.40

🔗 References (3)

advisoryhttps://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-26123
patchhttps://play.google.com/store/apps/details?id=com.azure.authenticator&hl=en_US
patchhttps://apps.apple.com/us/app/microsoft-authenticator/id983156458