Investigate in your agent.

Turn this advisory into a focused investigation. Ask your agent to check your project’s versions, explain the evidence, and suggest a compatible fix.

Your agent needs remote MCP support and access to https://cve.new/mcp.

Read the setup guide

Skip to content
cve.new Create a CVE report
Check your stack
CVE-2026-62909high7.8

.NET Elevation of Privilege Vulnerability

Impact

An authorized attacker can elevate privileges locally in .NET 8.0, 9.0, and 10.0 runtimes, and Microsoft Visual Studio 2022 and 2026, due to an uncaught exception. Affected versions include .NET 8.0.0 to 8.0.29, 9.0.0 to 9.0.18, and 10.0.0 to 10.0.10. The weakness is an unchecked return value.

Summarized by @cf/meta/llama-3.3-70b-instruct-fp8-fast. Verify details against the original sources.

Affected packages

This source has no supported package-version data for matching. You can read the advisory here, but this record alone cannot power a dependency check.

Affected products

Vendor version evidence. Product records are separate from automatic dependency matching.

Microsoft · microsoft

.NET 10.0 runtime

1 range
microsoft version evidence

Compare with this publisher’s ranges. This does not inspect your installation.

affected

10.0.0 → before 10.0.11

custom versions

unaffected

unknown

Other versions: unknown

Microsoft · microsoft

.NET 8.0 runtime

1 range
microsoft version evidence

Compare with this publisher’s ranges. This does not inspect your installation.

affected

8.0.0 → before 8.0.30

custom versions

unaffected

unknown

Other versions: unknown

Microsoft · microsoft

.NET 9.0 runtime

1 range
microsoft version evidence

Compare with this publisher’s ranges. This does not inspect your installation.

affected

9.0.0 → before 9.0.19

custom versions

unaffected

unknown

Other versions: unknown

Microsoft · microsoft

Microsoft Visual Studio 2022 version 17.14

1 range
microsoft version evidence

Compare with this publisher’s ranges. This does not inspect your installation.

affected

17.14.0 → before 17.14.38

custom versions

unaffected

unknown

Other versions: unknown

Microsoft · microsoft

Microsoft Visual Studio 2026 version 18.8

1 range
microsoft version evidence

Compare with this publisher’s ranges. This does not inspect your installation.

affected

18.0 → before 18.8.3

custom versions

unaffected

unknown

Other versions: unknown

Original source description

Uncaught exception in .NET allows an authorized attacker to elevate privileges locally.

Inside the record

Evidence available

Package identity · not supplied
Version evidence
Remediation guidance · not supplied
Weakness classification
Additional publishers

Describes the evidence in this view, not whether the product is safe.

Original records

CVE-2026-62909

View the latest unmodified CVE JSON from the official source. It may be newer than this imported page.

cve.new JSON →

Underlying weaknesses

The source’s classification of what caused the vulnerability.

CWE-252 ↗

CWE-252: Unchecked Return Value

microsoft

Related →

Environment requirements

These conditions apply together as specified by the publisher. A matching product name alone does not establish exposure.

microsoft · platform conditions

Any condition may hold

Vulnerable product

cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:*

From (inclusive): 10.0.0

Before: 10.0.11

Vulnerable product

cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:*

From (inclusive): 8.0.0

Before: 8.0.30

Vulnerable product

cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:*

From (inclusive): 9.0.0

Before: 9.0.19

Vulnerable product

cpe:2.3:a:microsoft:visual_studio_2026:*:*:*:*:*:*:*:*

From (inclusive): 18.0

Before: 18.8.3

Vulnerable product

cpe:2.3:a:microsoft:visual_studio_2022:*:*:*:*:*:*:*:*

From (inclusive): 17.14.0

Before: 17.14.38

Original applicability statements
[
  {
    "nodes": [
      {
        "operator": "OR",
        "negate": false,
        "cpeMatch": [
          {
            "vulnerable": true,
            "criteria": "cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:*",
            "versionStartIncluding": "10.0.0",
            "versionEndExcluding": "10.0.11"
          },
          {
            "vulnerable": true,
            "criteria": "cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:*",
            "versionStartIncluding": "8.0.0",
            "versionEndExcluding": "8.0.30"
          },
          {
            "vulnerable": true,
            "criteria": "cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:*",
            "versionStartIncluding": "9.0.0",
            "versionEndExcluding": "9.0.19"
          },
          {
            "vulnerable": true,
            "criteria": "cpe:2.3:a:microsoft:visual_studio_2026:*:*:*:*:*:*:*:*",
            "versionStartIncluding": "18.0",
            "versionEndExcluding": "18.8.3"
          },
          {
            "vulnerable": true,
            "criteria": "cpe:2.3:a:microsoft:visual_studio_2022:*:*:*:*:*:*:*:*",
            "versionStartIncluding": "17.14.0",
            "versionEndExcluding": "17.14.38"
          }
        ]
      }
    ]
  }
]
Contributing organizations · 2
microsoft

Assigning organization

2026-10-30
CISA-ADP

Additional data publisher

2026-08-12

What changed

Follow changes
No substantive changes have been recorded here yet. History starts when cve.new observes a change after tracking is enabled; earlier edits are not reconstructed.

Large field values are marked as truncated previews. Original source snapshots remain retained.

References

1 sources
msrc.microsoft.com/update-guide/vulnerability/CVE-2026-62909
vendor-advisorymicrosoft