.NET Framework Elevation of Privilege Vulnerability
Noroxi assessment
Priority: Monitor (action score 35/100)
- The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
- Probability of exploitation in the next 30 days: 0.77% (FIRST EPSS); higher than 55% of all records.
- Anyone who can reach it over the internet can trigger it. A low-privileged account is enough. No user action is required. No special conditions are required; it is repeatable.
- Fixed version: Microsoft .NET Framework 3.5 AND 4.6.2/4.7/4.7.1/4.7.2 on Windows 10 Version 1607 for 32-bit Systems 2.0.50727.8984 & 3.0.30729.8980 & 4.7.4144.0; Microsoft .NET Framework 3.5 AND 4.6.2/4.7/4.7.1/4.7.2 on Windows 10 Version 1607 for x64-based Systems 2.0.50727.8984 & 3.0.30729.8980 & 4.7.4144.0; Microsoft .NET Framework 3.5 AND 4.6.2/4.7/4.7.1/4.7.2 on Windows Server 2016 2.0.50727.8984 & 3.0.30729.8980 & 4.7.4144.0.
Low priority for now. Upgrade to Microsoft .NET Framework 3.5 AND 4.6.2/4.7/4.7.1/4.7.2 on Windows 10 Version 1607 for 32-bit Systems 2.0.50727.8984 & 3.0.30729.8980 & 4.7.4144.0; Microsoft .NET Framework 3.5 AND 4.6.2/4.7/4.7.1/4.7.2 on Windows 10 Version 1607 for x64-based Systems 2.0.50727.8984 & 3.0.30729.8980 & 4.7.4144.0; Microsoft .NET Framework 3.5 AND 4.6.2/4.7/4.7.1/4.7.2 on Windows Server 2016 2.0.50727.8984 & 3.0.30729.8980 & 4.7.4144.0 or later.
Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it
Primary sources: NVD · CVE.org · FIRST EPSS
Incorrect authorization in .NET Framework allows an authorized attacker to elevate privileges over a network.
- Published
- Aug 11, 2026
- Updated
- Oct 8, 2026
- EPSS
- 0.7% · 55th percentile
- CWE
- CWE-863
Report tools
Action score
35
Monitor
Low priority for now.
- CVSS
- 35 / 40 · 8.8 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 0 / 30 · 0.7%
CISA SSVC decision
- Exploitation
- none
- Automatable
- no
- Technical impact
- total
Vulnrichment: CISA's decision-tree inputs.
CNA vs NVD score
- NVD
- —
- CNA · microsoft
- 8.8
- NVD has not scored this yet; the score shown is the CNA’s.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.
Get told when this record changes
- Not in KEV: no record of exploitation in the wild
- No public exploit code on record
- A fix has been released
If any of these changes, we'll tell you in the daily email digest.
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Noroxi analysis
What does it mean in your environment?
The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.
We use this product, ask for helpAffected systems
Is your version affected?
Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.
| Vendor | Product | CPE |
|---|---|---|
| microsoft | .net framework | cpe:2.3:a:microsoft:.net_framework |
| microsoft | windows 11 26h1 | cpe:2.3:o:microsoft:windows_11_26h1 |
| microsoft | windows 10 1607 | cpe:2.3:o:microsoft:windows_10_1607 |
| microsoft | windows server 2012 | cpe:2.3:o:microsoft:windows_server_2012 |
| microsoft | windows server 2016 | cpe:2.3:o:microsoft:windows_server_2016 |
| microsoft | windows 10 21h2 | cpe:2.3:o:microsoft:windows_10_21h2 |
| microsoft | windows 10 22h2 | cpe:2.3:o:microsoft:windows_10_22h2 |
| microsoft | windows 11 23h2 | cpe:2.3:o:microsoft:windows_11_23h2 |
| microsoft | windows 11 24h2 | cpe:2.3:o:microsoft:windows_11_24h2 |
| microsoft | windows 11 25h2 | cpe:2.3:o:microsoft:windows_11_25h2 |
| microsoft | windows server 2022 | cpe:2.3:o:microsoft:windows_server_2022 |
| microsoft | windows server 2025 | cpe:2.3:o:microsoft:windows_server_2025 |
and 2 more
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- microsoft .net framework3.5
- microsoft .net framework4.6.2
- microsoft .net framework4.7
- microsoft .net framework4.7.1
- microsoft .net framework4.7.2
- microsoft .net framework4.8
- microsoft .net framework4.8.1
Versions reported by the vendor
Affected version ranges reported by the assigning authority (microsoft). Independent of NVD's CPE analysis and usually ahead of it.
Microsoft Microsoft .NET Framework 3.5
- 3.5.0 and later · before 2.0.50727.9183 & 3.0.30729.9169affected
Microsoft Microsoft .NET Framework 3.5 AND 4.6.2/4.7/4.7.1/4.7.2
- 3.0.0.0 and later · before 2.0.50727.8984 & 3.0.30729.8980 & 4.7.4144.0affected
Microsoft Microsoft .NET Framework 3.5 AND 4.7.2
- 4.7.0 and later · before 2.0.50727.9070 & 3.0.30729.9068 & 4.7.4144.0affected
Microsoft Microsoft .NET Framework 3.5 AND 4.8
- 4.8.0 and later · before 2.0.50727.9070 & 3.0.30729.9068 & 4.8.4805.0affected
Microsoft Microsoft .NET Framework 3.5 AND 4.8.1
- 4.8.1 and later · before 2.0.50727.9183 & 3.0.30729.9169 & 4.8.9343.0affected
Microsoft Microsoft .NET Framework 4.6.2/4.7/4.7.1/4.7.2
- 4.7.0 and later · before 4.7.4144.0affected
Microsoft Microsoft .NET Framework 4.8
- 4.8.0 and later · before 4.8.4805.0affected
Microsoft Microsoft .NET Framework 4.8.1
- 4.8.0.0 and later · before 4.8.9344.0affected
Same product
microsoft: all recordsOther highest-scoring records for the same primary product.
- CVE-2020-0646A remote code execution vulnerability exists when the Microsoft .NET Framework fails to validate input properly, aka '.NET Framework Remote KEV99Now
- CVE-2024-29059.NET Framework Information Disclosure VulnerabilityKEV90Now
- CVE-2017-8759Microsoft .NET Framework 2.0, 3.5, 3.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2 and 4.7 allow an attacker to execute code remotely via a malicious documeKEV88Now
Published before and after this one in the same product
- ← EarlierCVE-2026-50650Jul 14, 2026 · .NET Framework Elevation of Privilege Vulnerability31Monitor
- ← EarlierCVE-2026-50659Jul 14, 2026 · .NET Spoofing Vulnerability26Monitor
- Later →CVE-2026-62897Aug 11, 2026 · .NET Framework Remote Code Execution Vulnerability28Monitor
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
| Product / package | Fixed version | Source |
|---|---|---|
| Microsoft .NET Framework 3.5 AND 4.6.2/4.7/4.7.1/4.7.2 on Windows 10 Version 1607 for 32-bit Systems | 2.0.50727.8984 & 3.0.30729.8980 & 4.7.4144.0 · KB5120418 | Microsoft (MSRC) |
| Microsoft .NET Framework 3.5 AND 4.6.2/4.7/4.7.1/4.7.2 on Windows 10 Version 1607 for x64-based Systems | 2.0.50727.8984 & 3.0.30729.8980 & 4.7.4144.0 · KB5120418 | Microsoft (MSRC) |
| Microsoft .NET Framework 3.5 AND 4.6.2/4.7/4.7.1/4.7.2 on Windows Server 2016 | 2.0.50727.8984 & 3.0.30729.8980 & 4.7.4144.0 · KB5120418 | Microsoft (MSRC) |
| Microsoft .NET Framework 3.5 AND 4.6.2/4.7/4.7.1/4.7.2 on Windows Server 2016 (Server Core installation) | 2.0.50727.8984 & 3.0.30729.8980 & 4.7.4144.0 · KB5120418 | Microsoft (MSRC) |
| Microsoft .NET Framework 3.5 AND 4.7.2 on Windows 10 Version 1809 for 32-bit Systems | 2.0.50727.9070 & 3.0.30729.9068 & 4.7.4144.0 · KB5120698 | Microsoft (MSRC) |
| Microsoft .NET Framework 3.5 AND 4.7.2 on Windows 10 Version 1809 for x64-based Systems | 2.0.50727.9070 & 3.0.30729.9068 & 4.7.4144.0 · KB5120698 | Microsoft (MSRC) |
| Microsoft .NET Framework 3.5 AND 4.7.2 on Windows Server 2019 | 2.0.50727.9070 & 3.0.30729.9068 & 4.7.4144.0 · KB5120698 | Microsoft (MSRC) |
| Microsoft .NET Framework 3.5 AND 4.7.2 on Windows Server 2019 (Server Core installation) | 2.0.50727.9070 & 3.0.30729.9068 & 4.7.4144.0 · KB5120698 | Microsoft (MSRC) |
| Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 1809 for 32-bit Systems | 2.0.50727.9070 & 3.0.30729.9068 & 4.8.4805.0 · KB5120703 | Microsoft (MSRC) |
| Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 1809 for x64-based Systems | 2.0.50727.9070 & 3.0.30729.9068 & 4.8.4805.0 · KB5120703 | Microsoft (MSRC) |
| Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 21H2 for 32-bit Systems | 2.0.50727.9183 & 3.0.30729.9169 & 4.8.4805.0 · KB5120701 | Microsoft (MSRC) |
| Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 21H2 for ARM64-based Systems | 2.0.50727.9183 & 3.0.30729.9169 & 4.8.4805.0 · KB5120701 | Microsoft (MSRC) |
| Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 21H2 for x64-based Systems | 2.0.50727.9183 & 3.0.30729.9169 & 4.8.4805.0 · KB5120701 | Microsoft (MSRC) |
| Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 22H2 for 32-bit Systems | 2.0.50727.9183 & 3.0.30729.9169 & 4.8.4805.0 · KB5120701 | Microsoft (MSRC) |
| Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 22H2 for ARM64-based Systems | 2.0.50727.9183 & 3.0.30729.9169 & 4.8.4805.0 · KB5120701 | Microsoft (MSRC) |
| Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 22H2 for x64-based Systems | 2.0.50727.9183 & 3.0.30729.9169 & 4.8.4805.0 · KB5120701 | Microsoft (MSRC) |
| Microsoft .NET Framework 3.5 AND 4.8 on Windows Server 2019 | 2.0.50727.9070 & 3.0.30729.9068 & 4.8.4805.0 · KB5120703 | Microsoft (MSRC) |
| Microsoft .NET Framework 3.5 AND 4.8 on Windows Server 2019 (Server Core installation) | 2.0.50727.9070 & 3.0.30729.9068 & 4.8.4805.0 · KB5120703 | Microsoft (MSRC) |
| Microsoft .NET Framework 3.5 AND 4.8 on Windows Server 2022 | 2.0.50727.9183 & 3.0.30729.9169 & 4.8.4805.0 · KB5120705 | Microsoft (MSRC) |
| Microsoft .NET Framework 3.5 AND 4.8 on Windows Server 2022 (Server Core installation) | 2.0.50727.9183 & 3.0.30729.9169 & 4.8.4805.0 · KB5120705 | Microsoft (MSRC) |
| Microsoft .NET Framework 3.5 AND 4.8.1 on Windows 10 Version 21H2 for 32-bit Systems | 2.0.50727.9183 & 3.0.30729.9169 & 4.8.9343.0 · KB5120709 | Microsoft (MSRC) |
| Microsoft .NET Framework 3.5 AND 4.8.1 on Windows 10 Version 21H2 for ARM64-based Systems | 2.0.50727.9183 & 3.0.30729.9169 & 4.8.9343.0 · KB5120709 | Microsoft (MSRC) |
| Microsoft .NET Framework 3.5 AND 4.8.1 on Windows 10 Version 21H2 for x64-based Systems | 2.0.50727.9183 & 3.0.30729.9169 & 4.8.9343.0 · KB5120709 | Microsoft (MSRC) |
| Microsoft .NET Framework 3.5 AND 4.8.1 on Windows 10 Version 22H2 for 32-bit Systems | 2.0.50727.9183 & 3.0.30729.9169 & 4.8.9343.0 · KB5120709 | Microsoft (MSRC) |
| Microsoft .NET Framework 3.5 AND 4.8.1 on Windows 10 Version 22H2 for ARM64-based Systems | 2.0.50727.9183 & 3.0.30729.9169 & 4.8.9343.0 · KB5120709 | Microsoft (MSRC) |
| Microsoft .NET Framework 3.5 AND 4.8.1 on Windows 10 Version 22H2 for x64-based Systems | 2.0.50727.9183 & 3.0.30729.9169 & 4.8.9343.0 · KB5120709 | Microsoft (MSRC) |
| Microsoft .NET Framework 3.5 AND 4.8.1 on Windows 11 Version 23H2 for ARM64-based Systems | 2.0.50727.9183 & 3.0.30729.9169 & 4.8.9343.0 · KB5120713 | Microsoft (MSRC) |
| Microsoft .NET Framework 3.5 AND 4.8.1 on Windows 11 Version 23H2 for x64-based Systems | 2.0.50727.9183 & 3.0.30729.9169 & 4.8.9343.0 · KB5120713 | Microsoft (MSRC) |
| Microsoft .NET Framework 3.5 AND 4.8.1 on Windows 11 Version 24H2 for ARM64-based Systems | 2.0.50727.9183 & 3.0.30729.9169 & 4.8.9343.0 · KB5120710 | Microsoft (MSRC) |
| Microsoft .NET Framework 3.5 AND 4.8.1 on Windows 11 Version 24H2 for x64-based Systems | 2.0.50727.9183 & 3.0.30729.9169 & 4.8.9343.0 · KB5120710 | Microsoft (MSRC) |
+26
Exploit status
No known public exploit
No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.
Research context
For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.
Timeline
From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.
No dated events beyond publication.
FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).
Patch and commit links
Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.
No commit or PR link among the references.
Credits
All researchersFinders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.
No credits in the CNA record.
Variant candidates
Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.
No nightly-computed relations.
Chain candidates
An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.
—
Bug bounty scope
No known public program.
Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).
Technical details
Attack conditions
- Anyone who can reach it over the internet can trigger it.
- A low-privileged account is enough.
- No user action is required.
- No special conditions are required; it is repeatable.
If successful
- Confidentiality
- high · data can be read
- Integrity
- high · data or configuration can be modified
- Availability
- high · the service can be disrupted
- Attack vector
- Network
- Attack complexity
- Low
- Privileges required
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality impact
- High
- Integrity impact
- High
- Availability impact
- High
Weakness class (CWE)
CWE-863 · Incorrect AuthorizationCVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
nvd-secondary
Attack context
MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.
MITRE has no CAPEC/ATT&CK mapping for this CWE.
Change log
- Fix✗ → ✓
For records you follow, these changes also arrive as notifications. →
References
Vendor advisories and official records. Exploit/PoC links are deliberately left out.