Vulnerability details
CVE-2026-84008
Microsoft .NET FrameworkMicrosoft .NET Framework ANDMicrosoft Visual StudioMicrosoft System.Security.Cryptography.Pkcs
.NET Denial of Service Vulnerability
CVSS 3.1
7.5High
Official description
Inefficient algorithmic complexity in .NET allows an unauthorized attacker to deny service over a network.
CVSS scores
| Score | Version | Source | Vector |
|---|---|---|---|
| 7.5High | 3.1 | CVEProject cvelistV5 (CNA) (microsoft) | 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 |
Affected products
| Vendor | Product | Versions | Source |
|---|---|---|---|
| Microsoft | Microsoft .NET Framework 3.5 | 3.5.0 ≤ v < 2.0.50727.9188 AND 3.0.30729.9171 | CVEProject cvelistV5 (CNA) |
| Microsoft | Microsoft .NET Framework 3.5 AND 4.6.2/4.7/4.7.1/4.7.2 | 3.0.0.0 ≤ v < 2.0.50727.9073 AND 3.0.30729.9070 AND 4.7.4150.0 | CVEProject cvelistV5 (CNA) |
| Microsoft | Microsoft .NET Framework 3.5 AND 4.7.2 | 4.7.0 ≤ v < 2.0.50727.9073 AND 3.0.30729.9070 AND 4.7.4150.0 | CVEProject cvelistV5 (CNA) |
| Microsoft | Microsoft .NET Framework 3.5 AND 4.8 | 4.8.0 ≤ v < 2.0.50727.9073 AND 3.0.30729.9070 AND 4.8.4811.0 | CVEProject cvelistV5 (CNA) |
| Microsoft | Microsoft .NET Framework 3.5 AND 4.8.1 | 4.8.1 ≤ v < 2.0.50727.9188 AND 3.0.30729.9171 AND 4.8.9363.0 | CVEProject cvelistV5 (CNA) |
| Microsoft | Microsoft .NET Framework 4.6.2/4.7/4.7.1/4.7.2 | 4.7.0 ≤ v < 4.7.4150.0 | CVEProject cvelistV5 (CNA) |
| Microsoft | Microsoft .NET Framework 4.8 | 4.8.0 ≤ v < 4.8.4811.0 | CVEProject cvelistV5 (CNA) |
| Microsoft | Microsoft .NET Framework 4.8.1 | 4.8.0.0 ≤ v < 4.8.9363.0 | CVEProject cvelistV5 (CNA) |
| Microsoft | Microsoft Visual Studio 2022 version 17.14 | 17.14.0 ≤ v < 17.14.42 | CVEProject cvelistV5 (CNA) |
| Microsoft | Microsoft Visual Studio 2026 version 18.10 | 18.10.0 ≤ v < 18.10.4 | CVEProject cvelistV5 (CNA) |
| Microsoft | System.Security.Cryptography.Pkcs | 10.0.0 ≤ v < 10.0.13 | CVEProject cvelistV5 (CNA) |
References and advisories
1- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-84008 vendor-advisorypatch
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Details
- Published
- 2026-10-13
- Last updated
- 2026-10-31
- State
- Published
- Assigner (CNA)
- microsoft
Exploit prediction (EPSS)
0.99%
Probability of exploitation in 30 days
62.7%
Percentile (among all CVEs)
SSVC assessment (CISA)
- Automatable
- Yes
- Exploitation
- None
- Technical impact
- Partial
Weaknesses (CWE)
- CWE-407Inefficient Algorithmic Complexity