CVE-2026-69836

Undergoing Analysis
Published: 20 Aug 2026, 21:43
Last modified:21 Aug 2026, 18:16

Vulnerability Summary

Overall Risk (default)
high
70/100
CVSS Score
10 CRITICAL
v3.1 (cve.org)
EPSS Score
1.37% LOW
1% probability
KEV
Listed
CISA
1 listing
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

20 Aug 2026, 21:43
Published
Vulnerability first disclosed
21 Aug 2026, 00:00
Added to CISA KEV
Microsoft Entra ID Deserialization of Untrusted Data Vulnerability
21 Aug 2026, 18:16
Last Modified
Vulnerability information updated
24 Aug 2026, 00:00
CISA Remediation Due
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.

Description

Deserialization of untrusted data in Microsoft Entra ID allows an unauthorized attacker to execute code over a network.

CVSS Metrics

  • v3.1•CRITICAL•Score: 10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C
  • v3.1•CRITICAL•Score: 10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

EPSS Trends

Current EPSS score: 1.37%• Percentile: 70%

Techniques & Countermeasures

  • CWE-502•Deserialization of Untrusted Data

    The product deserializes untrusted data without sufficiently ensuring that the resulting data will be valid.

Affected Systems

  • microsoft•microsoft entra

    -

References (2)