Intel

CVE-2026-62878

microsoft windows_10_1607: Stack-basierter Pufferueberlauf

criticalEPSS 1.0%

Affected

  • microsoft/windows_10_1607 lt *..10.0.14393.9418
  • microsoft/windows_10_1607 lt *..10.0.14393.9418
  • microsoft/windows_10_1809 lt *..10.0.17763.9121
  • microsoft/windows_10_1809 lt *..10.0.17763.9121
  • microsoft/windows_server_2016 lt *..10.0.14393.9418
  • microsoft/windows_server_2019 lt *..10.0.17763.9121
  • microsoft/windows_server_2022 lt *..10.0.20348.5440
  • microsoft/windows_server_2025 lt *..10.0.26100.33222

Description

Stack-based buffer overflow in Windows DNS allows an unauthorized attacker to execute code over a network.

Source: cvelistv5NVD (NIST)Microsoft Security Update GuideBSI WID PortalBSI CSAF

Affected operating systems

  • windows

    microsoft / windows_10_1607

  • windows

    microsoft / windows_10_1809

  • windows

    microsoft / windows_server_2012r2

  • windows

    microsoft / windows_server_2012

  • windows

    microsoft / windows_server_2016

  • windows

    microsoft / windows_server_2019

  • windows

    microsoft / windows_server_2022

  • windows

    microsoft / windows_server_2025

Metrics

XIEM Effective CVSS
9.8
Source: nvd-v3
EPSS percentile
60.9 %
High — this CVE ranks above the median of all CVEs scored today (rank ≥ 36%).
KEV status
—
Show all metrics
Severity
critical
Priority score
103.72
Exploit maturity
no public PoC known
CVSS v3
9.8
EPSS score
1.0 %
Low — model estimates < 1% exploitation likelihood.
Published
2026-08-11 17:04 UTC
CWE
CWE-121

Weakness classes (CWE)

  • CWE-121Variant

    Stack-based Buffer Overflow

    A stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function).

    cwe.mitre.org →

References & sources

Reanalysis & status changes

Chronological NVD audit events for this CVE — reanalyses, CVSS updates, CPE diffs.

  1. CVE Modified2026-09-02 18:20 UTC· secure@microsoft.com
    • Affected: Affected value modified. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2026/62xxx/CVE-2026-62878.json">CVE-2026-62878</a>
    • Reference: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-62878
    • Reference: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-62878
    • Reference Type: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-62878 Types: Patch, Vendor Advisory
  2. Initial Analysis2026-08-17 15:47 UTC· nvd@nist.gov
    • CPE Configuration: OR *cpe:2.3:o:microsoft:windows_server_2012:r2:*:*:*:*:*:*:* *cpe:2.3:o:microsoft:windows_server_2012:-:*:*:*:*:*:*:* *cpe:2.3:o:microsoft:windows_10_1607:*:*:*:*:*:*:x64:* versions up to (excluding) 10.0.14393.9418 *cpe:2.3:o:microsoft:windows_10_1607:*:*:*:*:*:*:x86:* versions up to (excluding) 10.0.14393.9418 *cpe:2.3:o:microsoft:windows_server_2016:*:*:*:*:*:*:*:* versions up to (excluding) 10.0.14393.9418 *cpe:2.3:o:microsoft:windows_server_2022:*:*:*:*:*:*:*:* versions up to (excluding) 10.0.20348.5440 *cpe:2.3:o:microsoft:windows_server_2025:*:*:*:*:*:*:*:* versions up to (excluding) 10.0.26100.33222 *cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:x64:* versions up to (excluding) 10.0.17763.9121 *cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:x86:* versions up to (excluding) 10.0.17763.9121 *cpe:2.3:o:microsoft:windows_server_2019:*:*:*:*:*:*:*:* versions up to (excluding) 10.0.17763.9121
    • Reference Type: Microsoft Corporation: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-62878 Types: Patch, Vendor Advisory
  3. CVE Modified2026-08-16 19:17 UTC· secure@microsoft.com
    • Affected: Windows 10 Version 1607, Windows 10 Version 1809, Windows Server 2012 (+10) → Windows 10 Version 1607, Windows 10 Version 1809, Windows Server 2012 (+10)
  4. CVE Modified2026-08-11 22:18 UTC· secure@microsoft.com
    • Affected: Windows 10 Version 1607, Windows 10 Version 1809, Windows Server 2012 (+10) → Windows 10 Version 1607, Windows 10 Version 1809, Windows Server 2012 (+10)
  5. CVE Modified2026-08-11 20:18 UTC· 134c704f-9b21-4f2e-91b3-4a467353bcc0
    • SSVC: {"id":"CVE-2026-62878","role":"CISA Coordinator","options":[{"exploitation":"none"},{"automatable":"yes"},{"technical…

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