CVE-2026-56165
CRITICALMicrosoft Account Remote Code Execution Vulnerability
Title source: cnaDescription
Heap-based buffer overflow in Microsoft Account allows an unauthorized attacker to execute code over a network.
References (1)
Core 1
Core References
Vendor Advisory vendor-advisory
patch
Microsoft Account Remote Code Execution Vulnerability
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-56165
Scores
CVSS v3
9.8
EPSS
0.0074
EPSS Percentile
50.9%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
yes
Technical Impact
total
Details
CWE
CWE-122
Status
published
Products (2)
microsoft/account
Microsoft/Microsoft Account
-
Published
Jul 24, 2026
Tracked Since
Jul 24, 2026