High 7.5Published Oct 13, 2026

CVE-2026-96959.NET Denial of Service Vulnerability

Updated under an hour ago (Oct 28, 2026, 7:40 AM ET)

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It affects Microsoft .NET Framework 3.5 and 10 other products. Add what you run to find out whether that includes you.

EPSS puts the chance of exploitation in the next 30 days at 0.97%, higher than 62% of scored CVEs.

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Every CVE for Microsoft .NET Framework 3.5

Exploited in the last 30 days

Allocation of resources without limits or throttling in .NET allows an unauthorized attacker to deny service over a network.

CVSS: 7.5 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C
Weakness (CWE): CWE-770
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): 0.97% (percentile 62)
Assigned by: microsoft
NVD analysis: Analyzed
Record last updated: Oct 27, 2026
First seen by InfoSec Signals: Oct 13, 2026

Affected products

Affected products

Microsoft Microsoft .NET Framework 3.5 microsoft:net_framework_3.5 (from the name)	3.5.0 builds before 2.0.50727.9188 AND 3.0.30729.9171	CNA record
Microsoft Microsoft .NET Framework 3.5 AND 4.6.2/4.7/4.7.1/4.7.2 microsoft:net_framework_3.5_and_4.6.2_4.7_4.7.1_4.7.2 (from the name)	3.0.0.0 builds before 2.0.50727.8987 AND 3.0.30729.8982 AND 4.7.4150.0	CNA record
Microsoft Microsoft .NET Framework 3.5 AND 4.7.2 microsoft:net_framework_3.5_and_4.7.2 (from the name)	4.7.0 builds before 2.0.50727.9073 AND 3.0.30729.9070 AND 4.7.4150.0	CNA record
Microsoft Microsoft .NET Framework 3.5 AND 4.8 microsoft:net_framework_3.5_and_4.8 (from the name)	4.8.0 builds before 2.0.50727.9073 AND 3.0.30729.9070 AND 4.8.4811.0	CNA record
Microsoft Microsoft .NET Framework 3.5 AND 4.8.1 microsoft:net_framework_3.5_and_4.8.1 (from the name)	4.8.1 builds before 2.0.50727.9188 AND 3.0.30729.9171 AND 4.8.9363.0	CNA record
Microsoft Microsoft .NET Framework 4.6.2/4.7/4.7.1/4.7.2 microsoft:net_framework_4.6.2_4.7_4.7.1_4.7.2 (from the name)	from 4.7.0 before 4.7.4150.0	CNA record
Microsoft Microsoft .NET Framework 4.8 microsoft:net_framework_4.8 (from the name)	from 4.8.0 before 4.8.4811.0	CNA record
Microsoft Microsoft .NET Framework 4.8.1 microsoft:net_framework_4.8.1 (from the name)	from 4.8.0.0 before 4.8.9363.0	CNA record
Microsoft System.Security.Cryptography.Xml microsoft:system.security.cryptography.xml (from the name)	from 10.0.0 before 10.0.13	CNA record
microsoft .net microsoft:.net	from 8.0.0 before 8.0.5; from 9.0.0 before 9.0.21; from 10.0.0 before 10.0.13; 11.0.0; 11.0.0; 11.0.0; 11.0.0; 11.0.0; and 3 more ranges	NVD
1–10 of 11

References

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-96959	vendor-advisory, patch

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.