Unauthenticated service interruption via infinite loop
Published Jul 14, 2026 · Updated Jul 14, 2026
Denial of service in Microsoft Entra ID before 8.19.2 allows remote attackers to interrupt the hosted identity service over a network. The affected code enters a loop whose exit condition cannot be reached, but Microsoft has not disclosed the request-processing locus or triggering input. No account or user interaction is required; successful exploitation interrupts availability without reported data exposure or modification.
Summary
What happened
Denial of service in Microsoft Entra ID before 8.19.2 allows remote attackers to interrupt the hosted identity service over a network. The affected code enters a loop whose exit condition cannot be reached, but Microsoft has not disclosed the request-processing locus or triggering input. No account or user interaction is required; successful exploitation interrupts availability without reported data exposure or modification.
The record
- CVE
- CVE-2026-50653
- Published
- Jul 14, 2026
- Updated
- Jul 14, 2026
- Vendor
- Microsoft
- Product
- Microsoft Entra ID
- Classifications
- CWE-835, CWE-400, T1499.004
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Jul 14, 2026CVE publishedPublication date reported by the CVE source.
- Jul 14, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=2021 <8.19.2
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
No public exploit references are available in this record.
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Technologies
Your stack
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Your stack
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