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CVE-2026-56165NVD

Vulnerability Summary

Heap-based buffer overflow in Microsoft Account allows an unauthorized attacker to execute code over a network.

Severity Level

CRITICAL(9.8)

Published Date

Jul 24, 2026

Last Modified

Jul 24, 2026

Exploitation Status

No confirmed exploitation yet

EPSS Score (30-Day)

Data Pending

Root Weakness (CWE)

CWE-122: Unknown/Unlisted Weakness ↗

Refer to the official MITRE database for detailed architectural specifications regarding this weakness.

CVSS v3.1 Base Metrics

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

External References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-56165

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A improper neutralization of special elements used in an os command ('os command injection') vulnerability in Fortinet FortiSandbox...
CISA KEV📅 Added to KEV: Jul 16, 2026

Critical Alert 2 Active Exploits Detected Today

CVE-2026-56165NVD

Vulnerability Summary

External References