CVSS v3
9.8
CRITICAL
EPSS Score
0.7%
exploit probability
CISA KEV
No
known exploited
Exploitation
—
SSVC status
Heap-based buffer overflow in Microsoft Account allows an unauthorized attacker to execute code over a network.
Heap-based buffer overflow in Microsoft Account allows an unauthorized attacker to execute code over a network.
Active exploitation of CVE-2026-56165 has not been confirmed. The EPSS score is 0.7%, indicating the estimated probability of exploitation in the next 30 days.
CVE-2026-56165 has a CVSS v3 base score of 9.8 (CRITICAL severity), with vector string 3.1.
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