SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityAnalyzed

CVE-2026-69836

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

CRITICAL 10.0EPSS 1.55%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (1.55%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

Description

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

CVSS 3.1
10.0 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
EPSS
1.55% probability · 74th percentile
CISA KEV
Not listed
Weakness
CWE-502
Affected
microsoft/entra id
Source
secure@microsoft.com

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.