CVE-2026-26123
CVE-2026-26123 is a medium-severity vulnerability in Microsoft Authenticator with a CVSS 3.x base score of 5.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-939.
Key facts
- Severity: Medium (CVSS 3.x base score 5.5)
- EPSS exploit prediction: 1% (45th percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2026-10796
- Weakness: CWE-939
- Affected product: Microsoft Authenticator
- Published:
- Last modified:
Description
Cwe is not in rca categories in Microsoft Authenticator allows an unauthorized attacker to disclose information locally.
Frequently asked questions
- What is CVE-2026-26123?
- Cwe is not in rca categories in Microsoft Authenticator allows an unauthorized attacker to disclose information locally.
- How severe is CVE-2026-26123?
- CVE-2026-26123 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity none, and availability none.
- Is CVE-2026-26123 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (45th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2026-26123?
- CVE-2026-26123 primarily affects Microsoft Authenticator. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
- How do I fix CVE-2026-26123?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- Does CVE-2026-26123 have an EU (EUVD) identifier?
- Yes. CVE-2026-26123 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-10796.
- When was CVE-2026-26123 published?
- CVE-2026-26123 was published on 2026-03-10 and last updated on 2026-06-17.
References
Affected products (2)
- cpe:2.3:a:microsoft:authenticator:*:*:*:*:*:iphone_os:*:*
- cpe:2.3:a:microsoft:authenticator:*:*:*:*:*:android:*:*
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