CVE-2026-62916: CWE-288: Authentication Bypass Using an Alternate Path or Channel in Microsoft Microsoft Entra
Description
CVE-2026-62916 is a critical authentication bypass vulnerability in Microsoft Entra ID that allows unauthorized attackers to elevate privileges over a network by exploiting an alternate path or channel. This vulnerability has a high CVSS score of 9.1, indicating severe impact on confidentiality and integrity. An official fix is available from Microsoft to remediate this issue.
CVSS v3.1
Score 9.1critical
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability, identified as CWE-288, involves an authentication bypass in Microsoft Entra ID via an alternate path or channel. It enables an attacker without prior privileges to elevate their access rights remotely. The CVSS 3.1 score of 9.1 reflects network attack vector, low attack complexity, no privileges required, no user interaction, and high impact on confidentiality and integrity. Microsoft has issued an official fix for this vulnerability.
Potential Impact
Successful exploitation allows an attacker to bypass authentication controls and elevate privileges remotely, compromising confidentiality and integrity of the affected system. Availability is not impacted. No known exploits are reported in the wild at this time.
Mitigation Recommendations
An official fix is available from Microsoft for this vulnerability. It is recommended to apply the vendor-provided patch promptly to mitigate the risk of privilege escalation via authentication bypass.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-77pq-762c-pm6c
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-62916"]
- Database Specific Severity
- CRITICAL
- Cvss Version
- 3.1
- Remediation Level
- official-fix
- State
- PUBLISHED
Threat ID: 6a9ad4fcacd9273b49b67afd
Added to database: 09/04/2026, 14:26:04 UTC
Last enriched: 10/08/2026, 22:46:28 UTC
Last updated: 10/19/2026, 06:48:18 UTC
Views: 96
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