CVE-2026-56165
Critical
Description
Heap-based buffer overflow in Microsoft Account allows an unauthorized attacker to execute code over a network.
SeverityCritical
CVSS9.8
Exploit probability—
Product
Microsoft Account
PublishedJul 24, 2026
First seenJul 24, 2026
Weakness typeCWE-122CWE-122
How to fix
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| microsoft account | No range specified | — |
Check your version
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