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High 7.8Published Aug 11, 2026
CVE-2026-62886.NET Elevation of Privilege Vulnerability
Updated under an hour ago ()
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It affects Microsoft .NET Framework 3.5 and 11 other products. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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Integer overflow or wraparound in .NET allows an unauthorized attacker to elevate privileges locally.
- CVSS
- 7.8 HIGH (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
- Weakness (CWE)
- CWE-190, CWE-122
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- microsoft
- NVD analysis
- Analyzed
- Record last updated
- Oct 21, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Microsoft Microsoft .NET Framework 3.5 microsoft:net_framework_3.5 (from the name) | 3.5.0 builds before 2.0.50727.8987 AND 3.0.30729.8982 | 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 2.0.50727.9073 AND 3.0.30729.9070 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 2.0.50727.9070 & 3.0.30729.9068 & 4.7.4145.0 | 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 4.7.4145.0 | CNA record |
Microsoft Microsoft .NET Framework 4.8 microsoft:net_framework_4.8 (from the name) | from 4.8.0 before 4.8.4806.0 | CNA record |
Microsoft Microsoft .NET Framework 4.8.1 microsoft:net_framework_4.8.1 (from the name) | from 4.8.0.0 before 4.8.9347.0 | CNA record |
Microsoft Microsoft Visual Studio 2026 version 18.8 microsoft:visual_studio_2026_version_18.8 (from the name) | from 18.0 before 18.8.3 | CNA record |
microsoft visual_studio_2022 microsoft:visual_studio_2022 | from 17.14.0 before 17.14.38 | NVD |
microsoft visual_studio_2026 microsoft:visual_studio_2026 | from 18.8.0 before 18.8.3 | NVD |
microsoft .net microsoft:.net | from 8.0.0 before 8.0.30; from 9.0.0 before 9.0.19; from 10.0.0 before 10.0.11 | NVD |
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-62886vendor-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.