CVE-2026-69836 (GCVE-0-2026-69836)

Vulnerability from cvelistv5 – Published: 2026-08-20 21:43 – Updated: 2026-08-22 03:55 Exclusively Hosted Service
VLAI CISA
Title
Microsoft Entra ID Remote Code Execution Vulnerability
Summary
Deserialization of untrusted data in Microsoft Entra ID allows an unauthorized attacker to execute code over a network.
Severity
10 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C
SSVC
Exploitation: none Automatable: yes Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-21 00:00 UTC
CWE
  • CWE-502 - Deserialization of Untrusted Data
Assigner
References
Impacted products
Vendor Product Version CPE status
Microsoft Microsoft Entra Affected: -
    cpe:2.3:a:microsoft:microsoft_entra_id:*:*:*:*:*:*:*:*
Create a notification for this product.
Date Public
2026-08-20 14:00
CISA
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: 05ab57ac-8af4-4fc5-b706-95502d78424d

Vulnerability ID: CVE-2026-69836

Status: Confirmed

Status Updated: 2026-08-21 00:00 UTC

Exploited: Yes

Timestamps
First Seen: 2026-08-21
Asserted: 2026-08-21
Scope
Notes: Microsoft Entra ID Deserialization of Untrusted Data Vulnerability | Affected: Microsoft / Entra ID | Description: Microsoft Entra ID formerly known as Azure Active Directory contains a deserialization of untrusted data vulnerability which could allow an unauthorized attacker to execute code over a network. | Required action: Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines. | Due date: 2026-08-24 | Known ransomware campaign use (KEV): Unknown | Notes (KEV): https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-69836 ; BOD 26-04: https://www.cisa.gov/news-events/directives/bod-26-04-prioritizing-security-updates-based-risk ; Forensics Triage Requirements: https://www.cisa.gov/news-events/directives/bod-26-04-implementation-guidance-prioritizing-security-updates-based-risk ; https://nvd.nist.gov/vuln/detail/CVE-2026-69836
Evidence

Type: Vendor Report

Signal: Successful Exploitation

Confidence: 80%

Source: cisa-kev

Details
Cwes CWE-502
Feed CISA Known Exploited Vulnerabilities Catalog
Product Entra ID
Due Date 2026-08-24
Date Added 2026-08-21
Vendorproject Microsoft
Vulnerabilityname Microsoft Entra ID Deserialization of Untrusted Data Vulnerability
Knownransomwarecampaignuse Unknown
References
Created: 2026-08-21 17:00 UTC | Updated: 2026-08-21 17:00 UTC
Show details on NVD website
To clipboard 

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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.