CVE-2026-69836: CWE-502: Deserialization of Untrusted Data in Microsoft Microsoft Entra
CVE-2026-69836 is a critical vulnerability in Microsoft Entra involving deserialization of untrusted data. This flaw allows an unauthorized attacker to execute code remotely without any privileges or user interaction. The vulnerability has a CVSS score of 10.0, indicating maximum severity with complete confidentiality, integrity, and availability impact. An official fix is available from Microsoft. The vulnerability is not related to a cloud service, and no known exploits are reported in the wild at this time.
AI Analysis
Technical Summary
This vulnerability (CVE-2026-69836) in Microsoft Entra is caused by unsafe deserialization of untrusted data, which enables remote code execution by an attacker over a network. The CVSS 3.1 vector indicates the attack requires no privileges or user interaction, and it affects confidentiality, integrity, and availability with a critical severity rating. Microsoft has issued an official fix for this vulnerability as documented in their security update guide.
Potential Impact
Successful exploitation allows an unauthenticated attacker to execute arbitrary code remotely on the affected Microsoft Entra system, potentially leading to full system compromise including loss of confidentiality, integrity, and availability.
Mitigation Recommendations
An official fix is available from Microsoft. Users and administrators should apply the security update provided in the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-69836 to remediate this vulnerability.
CVE-2026-69836: CWE-502: Deserialization of Untrusted Data in Microsoft Microsoft Entra
Description
CVE-2026-69836 is a critical vulnerability in Microsoft Entra involving deserialization of untrusted data. This flaw allows an unauthorized attacker to execute code remotely without any privileges or user interaction. The vulnerability has a CVSS score of 10.0, indicating maximum severity with complete confidentiality, integrity, and availability impact. An official fix is available from Microsoft. The vulnerability is not related to a cloud service, and no known exploits are reported in the wild at this time.
CVSS v3.1
Score 10.0critical
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-69836) in Microsoft Entra is caused by unsafe deserialization of untrusted data, which enables remote code execution by an attacker over a network. The CVSS 3.1 vector indicates the attack requires no privileges or user interaction, and it affects confidentiality, integrity, and availability with a critical severity rating. Microsoft has issued an official fix for this vulnerability as documented in their security update guide.
Potential Impact
Successful exploitation allows an unauthenticated attacker to execute arbitrary code remotely on the affected Microsoft Entra system, potentially leading to full system compromise including loss of confidentiality, integrity, and availability.
Mitigation Recommendations
An official fix is available from Microsoft. Users and administrators should apply the security update provided in the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-69836 to remediate this vulnerability.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-08-03T22:51:46.190Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-69836","vendor":"Microsoft"}]
Threat ID: 6a87778cacd9273b492c5ef2
Added to database: 08/20/2026, 21:54:20 UTC
Last enriched: 08/20/2026, 22:09:01 UTC
Last updated: 08/21/2026, 02:36:31 UTC
Views: 11
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