CVE-2026-23666
7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:P/RL:O/RC:C
Summary
Improper input validation in .NET Framework allows an unauthorized attacker to deny service over a network.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Microsoft | Microsoft .NET Framework 3.5 | 3.5.0 < 2.0.50727.8982 & 3.0.30729.8976 | affected |
| Microsoft | Microsoft .NET Framework 3.5 AND 4.7.2 | 4.7.0 < 2.0.50727.9068 & 3.0.30729.9065 & 4.7.4141.0 | affected |
| Microsoft | Microsoft .NET Framework 3.5 AND 4.8 | 4.8.0 < 2.0.50727.9068 & 3.0.30729.9065 & 4.8.4801.0 | affected |
| Microsoft | Microsoft .NET Framework 3.5 AND 4.8.1 | 4.8.1 < 2.0.50727.9181 & 3.0.30729.9165 & 4.8.9332.0 | affected |
| Microsoft | Microsoft .NET Framework 4.6.2/4.7/4.7.1/4.7.2 | 4.7.0 < 4.8.4801.0 | affected |
| Microsoft | Microsoft .NET Framework 4.8 | 4.8.0 < 4.8.4801.0 | affected |
Weaknesses
- CWE-755: CWE-755: Improper Handling of Exceptional Conditions
ADP Enrichment
CISA ADP Vulnrichment
- SSVC:
- Exploitation: none
- Automatable: yes
- Technical Impact: partial
dotnet: .NET Framework: Denial of Service via Race Condition
Additional References
- https://access.redhat.com/security/cve/CVE-2026-23666
- https://bugzilla.redhat.com/show_bug.cgi?id=2458271
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-23666.json
References
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