CVE-2026-62698

CVE-2026-62698 is a high-severity vulnerability in Microsoft Windows 10 1607 with a CVSS 3.x base score of 7.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-197.

Key facts

• Severity: High (CVSS 3.x base score 7.8)
• EPSS exploit prediction: 0% (25th percentile)
• Actively exploited: Not listed in CISA KEV
• Weakness: CWE-197
• Affected product: Microsoft Windows 10 1607
• Published: 2026-08-11
• Last modified: 2026-08-16

Description

Numeric truncation error in Microsoft Digest Authentication allows an authorized attacker to elevate privileges locally.

Frequently asked questions

What is CVE-2026-62698?

Numeric truncation error in Microsoft Digest Authentication allows an authorized attacker to elevate privileges locally.

How severe is CVE-2026-62698?

CVE-2026-62698 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-62698 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (25th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-62698?

CVE-2026-62698 primarily affects Microsoft Windows 10 1607. In total, 24 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2026-62698?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2026-62698 published?

CVE-2026-62698 was published on 2026-08-11 and last updated on 2026-08-16.

References

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-62698

Affected products (24)

• cpe:2.3:o:microsoft:windows_10_1607:*:*:*:*:*:*:x64:*
• cpe:2.3:o:microsoft:windows_10_1607:*:*:*:*:*:*:x86:*
• cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:x64:*
• cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:x86:*
• cpe:2.3:o:microsoft:windows_10_21h2:*:*:*:*:*:*:arm64:*
• cpe:2.3:o:microsoft:windows_10_21h2:*:*:*:*:*:*:x64:*
• cpe:2.3:o:microsoft:windows_10_21h2:*:*:*:*:*:*:x86:*
• cpe:2.3:o:microsoft:windows_10_22h2:*:*:*:*:*:*:arm64:*
• cpe:2.3:o:microsoft:windows_10_22h2:*:*:*:*:*:*:x64:*
• cpe:2.3:o:microsoft:windows_10_22h2:*:*:*:*:*:*:x86:*
• cpe:2.3:o:microsoft:windows_11_23h2:*:*:*:*:*:*:arm64:*
• cpe:2.3:o:microsoft:windows_11_23h2:*:*:*:*:*:*:x64:*
• cpe:2.3:o:microsoft:windows_11_24h2:*:*:*:*:*:*:arm64:*
• cpe:2.3:o:microsoft:windows_11_24h2:*:*:*:*:*:*:x64:*
• cpe:2.3:o:microsoft:windows_11_25h2:*:*:*:*:*:*:arm64:*
• cpe:2.3:o:microsoft:windows_11_25h2:*:*:*:*:*:*:x64:*
• cpe:2.3:o:microsoft:windows_11_26h1:*:*:*:*:*:*:arm64:*
• cpe:2.3:o:microsoft:windows_11_26h1:*:*:*:*:*:*:x64:*
• cpe:2.3:o:microsoft:windows_server_2012:-:*:*:*:*:*:*:*
• cpe:2.3:o:microsoft:windows_server_2012:r2:*:*:*:*:*:*:*
• cpe:2.3:o:microsoft:windows_server_2016:*:*:*:*:*:*:*:*
• cpe:2.3:o:microsoft:windows_server_2019:*:*:*:*:*:*:*:*
• cpe:2.3:o:microsoft:windows_server_2022:*:*:*:*:*:*:*:*
• cpe:2.3:o:microsoft:windows_server_2025:*:*:*:*:*:*:*:*

More vulnerabilities in Microsoft Windows 10 1607

• CVE-2026-57092 — Critical (CVSS 9.9): Use after free in Windows VMSwitch allows an authorized attacker to elevate privileges over a network.
• CVE-2026-77493 — Critical (CVSS 9.8): Double free in Microsoft Graphics Component allows an unauthorized attacker to execute code over a network.
• CVE-2026-73025 — Critical (CVSS 9.8): Weak authentication in Windows iSCSI allows an unauthorized attacker to bypass a security feature over a network.
• CVE-2026-73009 — Critical (CVSS 9.8): Use after free in Windows Secure Socket Tunneling Protocol (SSTP) allows an unauthorized attacker to execute code over…
• CVE-2026-72983 — Critical (CVSS 9.8): Use after free in Windows Internet Connection Sharing (ICS) allows an unauthorized attacker to execute code over a…
• CVE-2026-72982 — Critical (CVSS 9.8): Stack-based buffer overflow in Windows Netlogon allows an unauthorized attacker to execute code over a network.

All CVEs affecting Microsoft Windows 10 1607 →

Other CWE-197 vulnerabilities

• CVE-2024-43639 — Critical (CVSS 9.8): Windows KDC Proxy Remote Code Execution Vulnerability
• CVE-2026-87529 — Critical (CVSS 9.6): Numeric truncation error in Media in Google Chrome prior to 153.0.8010.36 allowed a remote attacker to potentially…
• CVE-2020-15202 — Critical (CVSS 9.0): In Tensorflow before versions 1.15.4, 2.0.3, 2.1.2, 2.2.1 and 2.3.1, the `Shard` API in TensorFlow expects the last…
• CVE-2024-49018 — High (CVSS 8.8): SQL Server Native Client Remote Code Execution Vulnerability
• CVE-2024-43519 — High (CVSS 8.8): Microsoft WDAC OLE DB provider for SQL Server Remote Code Execution Vulnerability
• CVE-2024-30009 — High (CVSS 8.8): Windows Routing and Remote Access Service (RRAS) Remote Code Execution Vulnerability

Browse all CWE-197 vulnerabilities →