Review reviewHigh

CVE-2026-50304

Microsoft Microsoft .NET Framework 3.5 AND 4.7.2, Microsoft .NET Framework 3.5 AND 4.8, Microsoft .NET Framework 3.5 AND 4.8.1

Stack-based buffer overflow in Active Directory Federation Services allows an unauthorized attacker to deny service over a network.

PRIORITY ASSESSMENT

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV

Exploit probability1.07%

Technical severityCVSS 7.5

Stack-based buffer overflow in Active Directory Federation Services allows an unauthorized attacker to deny service over a network.

Product: Microsoft Microsoft .NET Framework 3.5 AND 4.7.2, Microsoft .NET Framework 3.5 AND 4.8, Microsoft .NET Framework 3.5 AND 4.8.1
Affected versions: >= 4.7.0 < 2.0.50727.9069 & 3.0.30729.9067 & 4.7.4143.0, >= 4.8.0 < 2.0.50727.9069 & 3.0.30729.9067 & 4.8.4803.0, >= 4.8.1 < 2.0.50727.9182 & 3.0.30729.9168 & 4.8.9339.0, >= 4.7.0 < 4.7.4143.0, >= 4.8.0 < 4.8.4803.0, >= 4.8.0.0 < 4.8.9340.0, >= 10.0.14393.0 < 10.0.14393.9339, >= 10.0.17763.0 < 10.0.17763.9020, >= 6.2.9200.0 < 6.2.9200.26226, >= 6.3.9600.0 < 6.3.9600.23291, >= 10.0.20348.0 < 10.0.20348.5386, >= 10.0.26100.0 < 10.0.26100.33158, < 10.0.14393.9339, < 10.0.17763.9020, r2, < 10.0.20348.5386, < 10.0.26100.33158
Fixed versions: 10.0.14393.9339, 10.0.17763.9020, 10.0.20348.5386, 10.0.26100.33158

Confirm exposure before applying a vendor-supported change.

1
Identify
Confirm that Microsoft Microsoft .NET Framework 3.5 AND 4.7.2, Microsoft .NET Framework 3.5 AND 4.8, Microsoft .NET Framework 3.5 AND 4.8.1 and an affected version are present.
2
Prioritize
Combine exploitation signals with asset exposure and business criticality.
3
Remediate
Follow the vendor advisory or supported update path and preserve rollback options.
4
Verify
Recheck the version, service health, access paths, and relevant logs.