MSRC_CVE-2026-26169

Vulnerability from csaf_microsoft - Published: 2026-04-14 07:00 - Updated: 2026-04-14 07:00
Summary
Windows Kernel Memory Information Disclosure Vulnerability
Severity
Important
Notes
Additional Resources: To determine the support lifecycle for your software, see the Microsoft Support Lifecycle: https://support.microsoft.com/lifecycle
Disclaimer: The information provided in the Microsoft Knowledge Base is provided \"as is\" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply.
Customer Action: Required. The vulnerability documented by this CVE requires customer action to resolve.
CVE-2026-26169
6.1 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N/E:U/RL:O/RC:C
CWE-126 - Buffer Over-read
Affected products
Product Identifier Version Remediation
Windows Server 2016 10.0.14393.9060
Windows Server 2016
 10.0.14393.9060
Windows 10 Version 1607 for 32-bit Systems 10.0.14393.9060
Windows 10 Version 1607 for 32-bit Systems
 10.0.14393.9060
Windows 10 Version 1607 for x64-based Systems 10.0.14393.9060
Windows 10 Version 1607 for x64-based Systems
 10.0.14393.9060
Windows Server 2016 (Server Core installation) 10.0.14393.9060
Windows Server 2016 (Server Core installation)
 10.0.14393.9060
Windows 10 Version 1809 for 32-bit Systems 10.0.17763.8644
Windows 10 Version 1809 for 32-bit Systems
 10.0.17763.8644
Windows 10 Version 1809 for x64-based Systems 10.0.17763.8644
Windows 10 Version 1809 for x64-based Systems
 10.0.17763.8644
Windows Server 2019 10.0.17763.8644
Windows Server 2019
 10.0.17763.8644
Windows Server 2019 (Server Core installation) 10.0.17763.8644
Windows Server 2019 (Server Core installation)
 10.0.17763.8644
Windows Server 2022 10.0.20348.5020
Windows Server 2022
 10.0.20348.5020
Windows Server 2022 (Server Core installation) 10.0.20348.5020
Windows Server 2022 (Server Core installation)
 10.0.20348.5020
Windows 10 Version 21H2 for 32-bit Systems 10.0.19044.7184
Windows 10 Version 21H2 for 32-bit Systems
 10.0.19044.7184
Windows 10 Version 21H2 for ARM64-based Systems 10.0.19044.7184
Windows 10 Version 21H2 for ARM64-based Systems
 10.0.19044.7184
Windows 10 Version 21H2 for x64-based Systems 10.0.19044.7184
Windows 10 Version 21H2 for x64-based Systems
 10.0.19044.7184
Windows 10 Version 22H2 for x64-based Systems 10.0.19045.7184
Windows 10 Version 22H2 for x64-based Systems
 10.0.19045.7184
Windows 10 Version 22H2 for ARM64-based Systems 10.0.19045.7184
Windows 10 Version 22H2 for ARM64-based Systems
 10.0.19045.7184
Windows 10 Version 22H2 for 32-bit Systems 10.0.19045.7184
Windows 10 Version 22H2 for 32-bit Systems
 10.0.19045.7184
Windows 11 Version 23H2 for ARM64-based Systems 10.0.22631.6936
Windows 11 Version 23H2 for ARM64-based Systems
 10.0.22631.6936
Windows 11 Version 23H2 for x64-based Systems 10.0.22631.6936
Windows 11 Version 23H2 for x64-based Systems
 10.0.22631.6936
Windows Server 2022, 23H2 Edition (Server Core installation) 10.0.25398.2274
Windows Server 2022, 23H2 Edition (Server Core installation)
 10.0.25398.2274
Windows 11 Version 24H2 for ARM64-based Systems 10.0.26100.32690
Windows 11 Version 24H2 for ARM64-based Systems
 10.0.26100.32690
Windows 11 Version 24H2 for x64-based Systems 10.0.26100.32690
Windows 11 Version 24H2 for x64-based Systems
 10.0.26100.32690
Windows Server 2025 10.0.26100.32690
Windows Server 2025
 10.0.26100.32690
Windows Server 2025 (Server Core installation) 10.0.26100.32690
Windows Server 2025 (Server Core installation)
 10.0.26100.32690
Windows 11 Version 25H2 for ARM systems 10.0.26200.8246
Windows 11 Version 25H2 for ARM systems
 10.0.26200.8246
Windows 11 Version 25H2 for x64-based Systems 10.0.26200.8246
Windows 11 Version 25H2 for x64-based Systems
 10.0.26200.8246
Windows 11 version 26H1 for x64-based Systems 10.0.28000.1836
Windows 11 version 26H1 for x64-based Systems
 10.0.28000.1836
Windows 11 Version 26H1 for ARM64-based Systems 10.0.28000.1836
Windows 11 Version 26H1 for ARM64-based Systems
 10.0.28000.1836
Product Identifier Version Remediation
Windows 11 Version 26H1 for ARM64-based Systems <10.0.28000.1836
Windows 11 Version 26H1 for ARM64-based Systems
 <10.0.28000.1836
Vendor Fix fix
Windows 11 version 26H1 for x64-based Systems <10.0.28000.1836
Windows 11 version 26H1 for x64-based Systems
 <10.0.28000.1836
Vendor Fix fix
Windows 11 Version 25H2 for x64-based Systems <10.0.26200.8246
Windows 11 Version 25H2 for x64-based Systems
 <10.0.26200.8246
Vendor Fix fix
Windows 11 Version 25H2 for ARM systems <10.0.26200.8246
Windows 11 Version 25H2 for ARM systems
 <10.0.26200.8246
Vendor Fix fix
Windows Server 2025 (Server Core installation) <10.0.26100.32690
Windows Server 2025 (Server Core installation)
 <10.0.26100.32690
Vendor Fix fix
Windows Server 2025 <10.0.26100.32690
Windows Server 2025
 <10.0.26100.32690
Vendor Fix fix
Windows 11 Version 24H2 for x64-based Systems <10.0.26100.32690
Windows 11 Version 24H2 for x64-based Systems
 <10.0.26100.32690
Vendor Fix fix
Windows 11 Version 24H2 for ARM64-based Systems <10.0.26100.32690
Windows 11 Version 24H2 for ARM64-based Systems
 <10.0.26100.32690
Vendor Fix fix
Windows Server 2022, 23H2 Edition (Server Core installation) <10.0.25398.2274
Windows Server 2022, 23H2 Edition (Server Core installation)
 <10.0.25398.2274
Vendor Fix fix
Windows 11 Version 23H2 for x64-based Systems <10.0.22631.6936
Windows 11 Version 23H2 for x64-based Systems
 <10.0.22631.6936
Vendor Fix fix
Windows 11 Version 23H2 for ARM64-based Systems <10.0.22631.6936
Windows 11 Version 23H2 for ARM64-based Systems
 <10.0.22631.6936
Vendor Fix fix
Windows 10 Version 22H2 for 32-bit Systems <10.0.19045.7184
Windows 10 Version 22H2 for 32-bit Systems
 <10.0.19045.7184
Vendor Fix fix
Windows 10 Version 22H2 for ARM64-based Systems <10.0.19045.7184
Windows 10 Version 22H2 for ARM64-based Systems
 <10.0.19045.7184
Vendor Fix fix
Windows 10 Version 22H2 for x64-based Systems <10.0.19045.7184
Windows 10 Version 22H2 for x64-based Systems
 <10.0.19045.7184
Vendor Fix fix
Windows 10 Version 21H2 for x64-based Systems <10.0.19044.7184
Windows 10 Version 21H2 for x64-based Systems
 <10.0.19044.7184
Vendor Fix fix
Windows 10 Version 21H2 for ARM64-based Systems <10.0.19044.7184
Windows 10 Version 21H2 for ARM64-based Systems
 <10.0.19044.7184
Vendor Fix fix
Windows 10 Version 21H2 for 32-bit Systems <10.0.19044.7184
Windows 10 Version 21H2 for 32-bit Systems
 <10.0.19044.7184
Vendor Fix fix
Windows Server 2022 (Server Core installation) <10.0.20348.5020
Windows Server 2022 (Server Core installation)
 <10.0.20348.5020
Vendor Fix fix
Windows Server 2022 <10.0.20348.5020
Windows Server 2022
 <10.0.20348.5020
Vendor Fix fix
Windows Server 2019 (Server Core installation) <10.0.17763.8644
Windows Server 2019 (Server Core installation)
 <10.0.17763.8644
Vendor Fix fix
Windows Server 2019 <10.0.17763.8644
Windows Server 2019
 <10.0.17763.8644
Vendor Fix fix
Windows 10 Version 1809 for x64-based Systems <10.0.17763.8644
Windows 10 Version 1809 for x64-based Systems
 <10.0.17763.8644
Vendor Fix fix
Windows 10 Version 1809 for 32-bit Systems <10.0.17763.8644
Windows 10 Version 1809 for 32-bit Systems
 <10.0.17763.8644
Vendor Fix fix
Windows Server 2016 (Server Core installation) <10.0.14393.9060
Windows Server 2016 (Server Core installation)
 <10.0.14393.9060
Vendor Fix fix
Windows 10 Version 1607 for x64-based Systems <10.0.14393.9060
Windows 10 Version 1607 for x64-based Systems
 <10.0.14393.9060
Vendor Fix fix
Windows 10 Version 1607 for 32-bit Systems <10.0.14393.9060
Windows 10 Version 1607 for 32-bit Systems
 <10.0.14393.9060
Vendor Fix fix
Windows Server 2016 <10.0.14393.9060
Windows Server 2016
 <10.0.14393.9060
Vendor Fix fix
Threats
Impact Information Disclosure
Exploit Status Publicly Disclosed:No;Exploited:No;Latest Software Release:Exploitation More Likely
References
Acknowledgments
Faiustov Denis with GMO Cybersecurity by Ierae, Inc.
Masahiro Kawada with GMO Cybersecurity by Ierae, Inc.
To clipboard 

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        "name": "Buffer Over-read"
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          "category": "general",
          "text": "Microsoft",
          "title": "Assigning CNA"
        },
        {
          "category": "faq",
          "text": "Exploiting this vulnerability could allow the disclosure of certain kernel memory content.",
          "title": "What type of information could be disclosed by this vulnerability?"
        },
        {
          "category": "faq",
          "text": "An attacker who successfully exploited this vulnerability could view sensitive information, (Confidentiality), and make some changes to disclosed information (Integrity), but they would not be able to affect Availability.",
          "title": "According to the CVSS metrics, successful exploitation of this vulnerability could lead to major loss of confidentiality (C:H), and some loss of integrity (I:L), but no loss of availability (A:N). What does that mean for this vulnerability?"
        }
      ],
      "product_status": {
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          "summary": "CVE-2026-26169 Windows Kernel Memory Information Disclosure Vulnerability - HTML",
          "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-26169"
        },
        {
          "category": "self",
          "summary": "CVE-2026-26169 Windows Kernel Memory Information Disclosure Vulnerability - CSAF",
          "url": "https://msrc.microsoft.com/csaf/advisories/2026/msrc_cve-2026-26169.json"
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      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "LOCAL",
            "availabilityImpact": "NONE",
            "baseScore": 6.1,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "HIGH",
            "environmentalsScore": 0.0,
            "exploitCodeMaturity": "UNPROVEN",
            "integrityImpact": "LOW",
            "privilegesRequired": "LOW",
            "remediationLevel": "OFFICIAL_FIX",
            "reportConfidence": "CONFIRMED",
            "scope": "UNCHANGED",
            "temporalScore": 5.3,
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N/E:U/RL:O/RC:C",
            "version": "3.1"
          },
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            "20",
            "21",
            "22",
            "23",
            "24",
            "25",
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        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Information Disclosure"
        },
        {
          "category": "exploit_status",
          "details": "Publicly Disclosed:No;Exploited:No;Latest Software Release:Exploitation More Likely"
        }
      ],
      "title": "Windows Kernel Memory Information Disclosure Vulnerability"
    }
  ]
}


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Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.