CVE-2026-62883medium6.7

Windows DNS Elevation of Privilege Vulnerability

Impact

A numeric truncation error in Windows DNS allows an authorized attacker to elevate privileges locally on affected versions of Windows 10 and Windows Server. The vulnerability is due to a weakness in numeric truncation error (CWE-197).

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

Windows 10 Version 1607

1 range

microsoft version evidence

Platforms: 32-bit Systems, x64-based Systems

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affected

10.0.14393.0 → before 10.0.14393.9418

custom versions

Other versions: unknown

Microsoft · microsoft

Windows 10 Version 1809

1 range

microsoft version evidence

Platforms: 32-bit Systems, x64-based Systems

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affected

10.0.17763.0 → before 10.0.17763.9121

custom versions

Other versions: unknown

Microsoft · microsoft

Windows 10 Version 21H2

1 range

microsoft version evidence

Platforms: 32-bit Systems, ARM64-based Systems, x64-based Systems

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affected

10.0.19044.0 → before 10.0.19044.7663

custom versions

Other versions: unknown

Microsoft · microsoft

Windows 10 Version 22H2

1 range

microsoft version evidence

Platforms: 32-bit Systems, ARM64-based Systems, x64-based Systems

Check a product version

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affected

10.0.19045.0 → before 10.0.19045.7663

custom versions

Other versions: unknown

Microsoft · microsoft

Windows 11 version 23H2

1 range

microsoft version evidence

Platforms: ARM64-based Systems

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affected

10.0.22631.0 → before 10.0.22631.7517

custom versions

Other versions: unknown

Microsoft · microsoft

Windows 11 Version 23H2

1 range

microsoft version evidence

Platforms: x64-based Systems

Check a product version

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affected

10.0.22631.0 → before 10.0.22631.7517

custom versions

Other versions: unknown

Microsoft · microsoft

Windows 11 Version 24H2

1 range

microsoft version evidence

Platforms: ARM64-based Systems, x64-based Systems

Check a product version

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affected

10.0.26100.0 → before 10.0.26100.9168

custom versions

Other versions: unknown

Microsoft · microsoft

Windows 11 Version 25H2

1 range

microsoft version evidence

Platforms: ARM64-based Systems, x64-based Systems

Check a product version

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affected

10.0.26200.0 → before 10.0.26200.9168

custom versions

Other versions: unknown

Microsoft · microsoft

Windows 11 version 26H1

1 range

microsoft version evidence

Platforms: ARM64-based Systems, x64-based Systems

Check a product version

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affected

10.0.28000.0 → before 10.0.28000.2704

custom versions

Other versions: unknown

Microsoft · microsoft

Windows Server 2012

1 range

microsoft version evidence

Platforms: x64-based Systems

Check a product version

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affected

6.2.9200.0 → before 6.2.9200.26280

custom versions

Other versions: unknown

Microsoft · microsoft

Windows Server 2012 (Server Core installation)

1 range

microsoft version evidence

Platforms: x64-based Systems

Check a product version

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affected

6.2.9200.0 → before 6.2.9200.26280

custom versions

Other versions: unknown

Microsoft · microsoft

Windows Server 2012 R2

1 range

microsoft version evidence

Platforms: x64-based Systems

Check a product version

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affected

6.3.9600.0 → before 6.3.9600.23338

custom versions

Other versions: unknown

Microsoft · microsoft

Windows Server 2012 R2 (Server Core installation)

1 range

microsoft version evidence

Platforms: x64-based Systems

Check a product version

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

affected

6.3.9600.0 → before 6.3.9600.23338

custom versions

Other versions: unknown

Microsoft · microsoft

Windows Server 2016

1 range

microsoft version evidence

Platforms: x64-based Systems

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affected

10.0.14393.0 → before 10.0.14393.9418

custom versions

Other versions: unknown

Microsoft · microsoft

Windows Server 2016 (Server Core installation)

1 range

microsoft version evidence

Platforms: x64-based Systems

Check a product version

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

affected

10.0.14393.0 → before 10.0.14393.9418

custom versions

Other versions: unknown

Microsoft · microsoft

Windows Server 2019

1 range

microsoft version evidence

Platforms: x64-based Systems

Check a product version

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

affected

10.0.17763.0 → before 10.0.17763.9121

custom versions

Other versions: unknown

Microsoft · microsoft

Windows Server 2019 (Server Core installation)

1 range

microsoft version evidence

Platforms: x64-based Systems

Check a product version

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

affected

10.0.17763.0 → before 10.0.17763.9121

custom versions

Other versions: unknown

Microsoft · microsoft

Windows Server 2022

1 range

microsoft version evidence

Platforms: x64-based Systems

Check a product version

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affected

10.0.20348.0 → before 10.0.20348.5499

custom versions

Other versions: unknown

Microsoft · microsoft

Windows Server 2025

1 range

microsoft version evidence

Platforms: x64-based Systems

Check a product version

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

affected

10.0.26100.0 → before 10.0.26100.33296

custom versions

Other versions: unknown

Microsoft · microsoft

Windows Server 2025 (Server Core installation)

1 range

microsoft version evidence

Platforms: x64-based Systems

Check a product version

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

affected

10.0.26100.0 → before 10.0.26100.33296

custom versions

Other versions: unknown

Original source description

Numeric truncation error in Windows DNS 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-2026-62883

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-197 ↗

CWE-197: Numeric Truncation Error

microsoft

CWE-122 ↗

CWE-122: Heap-based Buffer Overflow

microsoft

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:o:microsoft:windows_10_1809:*:*:*:*:*:*:x86:*

From (inclusive): 10.0.17763.0

After:

Through (inclusive):

Before: 10.0.17763.9121

Vulnerable product

cpe:2.3:o:microsoft:windows_server_2019:*:*:*:*:*:*:*:*

From (inclusive): 10.0.17763.0

After:

Through (inclusive):

Before: 10.0.17763.9121

Vulnerable product

cpe:2.3:o:microsoft:windows_server_2019:*:*:*:*:*:*:*:*

From (inclusive): 10.0.17763.0

After:

Through (inclusive):

Before: 10.0.17763.9121

Vulnerable product

cpe:2.3:o:microsoft:windows_server_2022:*:*:*:*:*:*:*:*

From (inclusive): 10.0.20348.0

After:

Through (inclusive):

Before: 10.0.20348.5499

Vulnerable product

cpe:2.3:o:microsoft:windows_10_21H2:*:*:*:*:*:*:x86:*

From (inclusive): 10.0.19044.0

After:

Through (inclusive):

Before: 10.0.19044.7663

Vulnerable product

cpe:2.3:o:microsoft:windows_10_22H2:*:*:*:*:*:*:x64:*

From (inclusive): 10.0.19045.0

After:

Through (inclusive):

Before: 10.0.19045.7663

Vulnerable product

cpe:2.3:o:microsoft:windows_server_2025:*:*:*:*:*:*:*:*

From (inclusive): 10.0.26100.0

After:

Through (inclusive):

Before: 10.0.26100.33296

Vulnerable product

cpe:2.3:o:microsoft:windows_11_25H2:*:*:*:*:*:*:arm64:*

From (inclusive): 10.0.26200.0

After:

Through (inclusive):

Before: 10.0.26200.9168

Vulnerable product

cpe:2.3:o:microsoft:windows_11_23H2:*:*:*:*:*:*:arm64:*

From (inclusive): 10.0.22631.0

After:

Through (inclusive):

Before: 10.0.22631.7517

Vulnerable product

cpe:2.3:o:microsoft:windows_11_23H2:*:*:*:*:*:*:x64:*

From (inclusive): 10.0.22631.0

After:

Through (inclusive):

Before: 10.0.22631.7517

Vulnerable product

cpe:2.3:o:microsoft:windows_11_24H2:*:*:*:*:*:*:arm64:*

From (inclusive): 10.0.26100.0

After:

Through (inclusive):

Before: 10.0.26100.9168

Vulnerable product

cpe:2.3:o:microsoft:windows_server_2025:*:*:*:*:*:*:*:*

From (inclusive): 10.0.26100.0

After:

Through (inclusive):

Before: 10.0.26100.33296

Vulnerable product

cpe:2.3:o:microsoft:windows_11_26H1:*:*:*:*:*:*:x64:*

From (inclusive): 10.0.28000.0

After:

Through (inclusive):

Before: 10.0.28000.2704

Vulnerable product

cpe:2.3:o:microsoft:windows_10_1607:*:*:*:*:*:*:x86:*

From (inclusive): 10.0.14393.0

After:

Through (inclusive):

Before: 10.0.14393.9418

Vulnerable product

cpe:2.3:o:microsoft:windows_server_2016:*:*:*:*:*:*:*:*

From (inclusive): 10.0.14393.0

After:

Through (inclusive):

Before: 10.0.14393.9418

Vulnerable product

cpe:2.3:o:microsoft:windows_server_2016:*:*:*:*:*:*:*:*

From (inclusive): 10.0.14393.0

After:

Through (inclusive):

Before: 10.0.14393.9418

Vulnerable product

cpe:2.3:o:microsoft:windows_server_2012:*:*:*:*:*:*:x64:*

From (inclusive): 6.2.9200.0

After:

Through (inclusive):

Before: 6.2.9200.26280

Vulnerable product

cpe:2.3:o:microsoft:windows_server_2012:*:*:*:*:*:*:x64:*

From (inclusive): 6.2.9200.0

After:

Through (inclusive):

Before: 6.2.9200.26280

Vulnerable product

cpe:2.3:o:microsoft:windows_server_2012_R2:*:*:*:*:*:*:x64:*

From (inclusive): 6.3.9600.0

After:

Through (inclusive):

Before: 6.3.9600.23338

Vulnerable product

cpe:2.3:o:microsoft:windows_server_2012_R2:*:*:*:*:*:*:x64:*

From (inclusive): 6.3.9600.0

After:

Through (inclusive):

Before: 6.3.9600.23338

Original applicability statements

[
  {
    "nodes": [
      {
        "operator": "OR",
        "negate": false,
        "cpeMatch": [
          {
            "vulnerable": true,
            "criteria": "cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:x86:*",
            "versionStartIncluding": "10.0.17763.0",
            "versionEndExcluding": "10.0.17763.9121"
          },
          {
            "vulnerable": true,
            "criteria": "cpe:2.3:o:microsoft:windows_server_2019:*:*:*:*:*:*:*:*",
            "versionStartIncluding": "10.0.17763.0",
            "versionEndExcluding": "10.0.17763.9121"
          },
          {
            "vulnerable": true,
            "criteria": "cpe:2.3:o:microsoft:windows_server_2019:*:*:*:*:*:*:*:*",
            "versionStartIncluding": "10.0.17763.0",
            "versionEndExcluding": "10.0.17763.9121"
          },
          {
            "vulnerable": true,
            "criteria": "cpe:2.3:o:microsoft:windows_server_2022:*:*:*:*:*:*:*:*",
            "versionStartIncluding": "10.0.20348.0",
            "versionEndExcluding": "10.0.20348.5499"
          },
          {
            "vulnerable": true,
            "criteria": "cpe:2.3:o:microsoft:windows_10_21H2:*:*:*:*:*:*:x86:*",
            "versionStartIncluding": "10.0.19044.0",
            "versionEndExcluding": "10.0.19044.7663"
          },
          {
            "vulnerable": true,
            "criteria": "cpe:2.3:o:microsoft:windows_10_22H2:*:*:*:*:*:*:x64:*",
            "versionStartIncluding": "10.0.19045.0",
            "versionEndExcluding": "10.0.19045.7663"
          },
          {
            "vulnerable": true,
            "criteria": "cpe:2.3:o:microsoft:windows_server_2025:*:*:*:*:*:*:*:*",
            "versionStartIncluding": "10.0.26100.0",
            "versionEndExcluding": "10.0.26100.33296"
          },
          {
            "vulnerable": true,
            "criteria": "cpe:2.3:o:microsoft:windows_11_25H2:*:*:*:*:*:*:arm64:*",
            "versionStartIncluding": "10.0.26200.0",
            "versionEndExcluding": "10.0.26200.9168"
          },
          {
            "vulnerable": true,
            "criteria": "cpe:2.3:o:microsoft:windows_11_23H2:*:*:*:*:*:*:arm64:*",
            "versionStartIncluding": "10.0.22631.0",
            "versionEndExcluding": "10.0.22631.7517"
          },
          {
            "vulnerable": true,
            "criteria": "cpe:2.3:o:microsoft:windows_11_23H2:*:*:*:*:*:*:x64:*",
            "versionStartIncluding": "10.0.22631.0",
            "versionEndExcluding": "10.0.22631.7517"
          },
          {
            "vulnerable": true,
            "criteria": "cpe:2.3:o:microsoft:windows_11_24H2:*:*:*:*:*:*:arm64:*",
            "versionStartIncluding": "10.0.26100.0",
            "versionEndExcluding": "10.0.26100.9168"
          },
          {
            "vulnerable": true,
            "criteria": "cpe:2.3:o:microsoft:windows_server_2025:*:*:*:*:*:*:*:*",
            "versionStartIncluding": "10.0.26100.0",
            "versionEndExcluding": "10.0.26100.33296"
          },
          {
            "vulnerable": true,
            "criteria": "cpe:2.3:o:microsoft:windows_11_26H1:*:*:*:*:*:*:x64:*",
            "versionStartIncluding": "10.0.28000.0",
            "versionEndExcluding": "10.0.28000.2704"
          },
          {
            "vulnerable": true,
            "criteria": "cpe:2.3:o:microsoft:windows_10_1607:*:*:*:*:*:*:x86:*",
            "versionStartIncluding": "10.0.14393.0",
            "versionEndExcluding": "10.0.14393.9418"
          },
          {
            "vulnerable": true,
            "criteria": "cpe:2.3:o:microsoft:windows_server_2016:*:*:*:*:*:*:*:*",
            "versionStartIncluding": "10.0.14393.0",
            "versionEndExcluding": "10.0.14393.9418"
          },
          {
            "vulnerable": true,
            "criteria": "cpe:2.3:o:microsoft:windows_server_2016:*:*:*:*:*:*:*:*",
            "versionStartIncluding": "10.0.14393.0",
            "versionEndExcluding": "10.0.14393.9418"
          },
          {
            "vulnerable": true,
            "criteria": "cpe:2.3:o:microsoft:windows_server_2012:*:*:*:*:*:*:x64:*",
            "versionStartIncluding": "6.2.9200.0",
            "versionEndExcluding": "6.2.9200.26280"
          },
          {
            "vulnerable": true,
            "criteria": "cpe:2.3:o:microsoft:windows_server_2012:*:*:*:*:*:*:x64:*",
            "versionStartIncluding": "6.2.9200.0",
            "versionEndExcluding": "6.2.9200.26280"
          },
          {
            "vulnerable": true,
            "criteria": "cpe:2.3:o:microsoft:windows_server_2012_R2:*:*:*:*:*:*:x64:*",
            "versionStartIncluding": "6.3.9600.0",
            "versionEndExcluding": "6.3.9600.23338"
          },
          {
            "vulnerable": true,
            "criteria": "cpe:2.3:o:microsoft:windows_server_2012_R2:*:*:*:*:*:*:x64:*",
            "versionStartIncluding": "6.3.9600.0",
            "versionEndExcluding": "6.3.9600.23338"
          }
        ]
      }
    ]
  }
]

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-2026-62883

vendor-advisorymicrosoft

Priority and evidence

Not in CISA KEVNo package fix recorded

KEV coverage does not rule out exploitation.

KEV checked 31/10/2026, 15:15:33 UTC

microsoft · CVSS:3.1 · 6.7

Assessment vector

CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C

Reading the signals

Severity · CVSS: Technical impact and attack conditions. The headline is the highest imported catalog score; sources may disagree.
Observed exploitation · KEV: An absent or unavailable KEV listing does not establish that exploitation has not occurred.
Predicted exploitation · EPSS: 0.35% estimated probability in the next 30 days. 2026-10-28 · FIRST EPSS.

CISA-ADP · SSVC

CISA Coordinator · 2026-08-07

Exploitation: none
Automatable: no
Technical Impact: total

SSVC describes the publisher’s decision context. Your organization’s exposure and priorities may differ.

Record details

Published: 11/08/2026, 17:06:24 UTC
Modified: 30/10/2026, 17:22:11 UTC
Last imported by cve.new: 30/10/2026, 18:44:19 UTC
Aliases: None recorded

Source evidence

Request a correction or dispute

Start with the assigning organization for this record. Include the CVE ID, the disputed information, and supporting evidence. A dispute does not itself reject a record.

Find the responsible CNA →Official dispute and escalation process ↗

CVE CVE-2026-62883

Enrichment coverage

NVDAvailable

Checked 29/10/2026, 03:25:34 UTC

GHSAAvailable

Checked 29/10/2026, 03:25:34 UTC

EUVDAvailable

Checked 29/10/2026, 03:25:36 UTC

EPSSAvailable

Checked 29/10/2026, 03:25:36 UTC

Additional source evidence

NVD · CVE-2026-62883

CVSS 6.7 CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Checked 29/10/2026, 03:25:34 UTC

GitHub Advisory Database · GHSA-x8g5-chp9-995x

CVSS 6.7 CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Checked 29/10/2026, 03:25:34 UTC

ENISA EUVD · EUVD-2026-56683

CVSS 6.7 CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C

Checked 29/10/2026, 03:25:36 UTC

FIRST EPSS · CVE-2026-62883

EPSS 0.35% probability of exploitation in the next 30 days. Percentile: 28.37% · 2026-10-28

Checked 29/10/2026, 03:25:36 UTC

Sponsored by MoxsoBuild security habits with adaptive training and phishing simulations.View as JSON

Windows DNS Elevation of Privilege Vulnerability

Impact

Affected packages

Affected products

Windows 10 Version 1607

affected

unaffected

unknown

Windows 10 Version 1809

affected

unaffected

unknown

Windows 10 Version 21H2

affected

unaffected

unknown

Windows 10 Version 22H2

affected

unaffected

unknown

Windows 11 version 23H2

affected

unaffected

unknown

Windows 11 Version 23H2

affected

unaffected

unknown

Windows 11 Version 24H2

affected

unaffected

unknown

Windows 11 Version 25H2

affected

unaffected

unknown

Windows 11 version 26H1

affected

unaffected

unknown

Windows Server 2012

affected

unaffected

unknown

Windows Server 2012 (Server Core installation)

affected

unaffected

unknown

Windows Server 2012 R2

affected

unaffected

unknown

Windows Server 2012 R2 (Server Core installation)

affected

unaffected

unknown

Windows Server 2016

affected

unaffected

unknown

Windows Server 2016 (Server Core installation)

affected

unaffected

unknown

Windows Server 2019

affected

unaffected

unknown

Windows Server 2019 (Server Core installation)

affected

unaffected

unknown

Windows Server 2022

affected

unaffected

unknown

Windows Server 2025

affected

unaffected

unknown