CVE-2023-21681

CVE-2023-21681 is a high-severity vulnerability in Microsoft Windows 10 1607 with a CVSS 3.x base score of 8.8. 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-191.

Key facts

• Severity: High (CVSS 3.x base score 8.8)
• EPSS exploit prediction: 1% (71st percentile)
• Actively exploited: Not listed in CISA KEV
• Weakness: CWE-191
• Affected product: Microsoft Windows 10 1607
• Published: 2023-01-10
• Last modified: 2026-06-17

Description

Microsoft WDAC OLE DB provider for SQL Server Remote Code Execution Vulnerability

Frequently asked questions

What is CVE-2023-21681?

Microsoft WDAC OLE DB provider for SQL Server Remote Code Execution Vulnerability

How severe is CVE-2023-21681?

CVE-2023-21681 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2023-21681 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (71st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-21681?

CVE-2023-21681 primarily affects Microsoft Windows 10 1607. In total, 31 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2023-21681?

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-2023-21681 published?

CVE-2023-21681 was published on 2023-01-10 and last updated on 2026-06-17.

References

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-21681

Affected products (31)

• 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:-:*:*:*:*:*:arm64:*
• 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_20h2:-:*:*:*:*:*:arm64:*
• cpe:2.3:o:microsoft:windows_10_20h2:-:*:*:*:*:*:x64:*
• cpe:2.3:o:microsoft:windows_10_20h2:-:*:*:*:*:*: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_21h2:-:*:*:*:*:*:arm64:*
• cpe:2.3:o:microsoft:windows_11_21h2:-:*:*:*:*:*:x64:*
• cpe:2.3:o:microsoft:windows_11_22h2:-:*:*:*:*:*:arm64:*
• cpe:2.3:o:microsoft:windows_11_22h2:-:*:*:*:*:*:x64:*
• cpe:2.3:o:microsoft:windows_7:-:sp1:*:*:*:*:x64:*
• cpe:2.3:o:microsoft:windows_7:-:sp1:*:*:*:*:x86:*
• cpe:2.3:o:microsoft:windows_8.1:-:*:*:*:*:*:x64:*
• cpe:2.3:o:microsoft:windows_8.1:-:*:*:*:*:*:x86:*
• cpe:2.3:o:microsoft:windows_rt_8.1:-:*:*:*:*:*:*:*
• cpe:2.3:o:microsoft:windows_server_2008:-:sp2:*:*:*:*:x64:*
• cpe:2.3:o:microsoft:windows_server_2008:-:sp2:*:*:*:*:x86:*
• cpe:2.3:o:microsoft:windows_server_2008:r2:sp1:*:*:*:*: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:-:*:*:*:*:*:*:*

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-191 (Integer Underflow) vulnerabilities

• CVE-2007-0063 — Critical (CVSS 10.0): Integer underflow in the DHCP server in EMC VMware Workstation before 5.5.5 Build 56455 and 6.x before 6.0.1 Build…
• CVE-2026-84411 — Critical (CVSS 9.8): The web management service in affected RouterOS versions contains an integer underflow in its HTTP request body…
• CVE-2026-91103 — Critical (CVSS 9.8): HP has identified and remediated multiple externally reported vulnerabilities within HPLIP. The findings affect several…
• CVE-2026-51540 — Critical (CVSS 9.8): OpENer 2.3.0 (master branch up to commit 76b95cf) is vulnerable to a severe memory corruption issue caused by an…
• CVE-2026-53176 — Critical (CVSS 9.8): In the Linux kernel, the following vulnerability has been resolved: IB/isert: Reject login PDUs shorter than…
• CVE-2026-37534 — Critical (CVSS 9.8): Integer underflow vulnerability in Open-SAE-J1939 thru commit b6caf884df46435e539b1ecbf92b6c29b345bdfe (2025-11-30) in…

Browse all CWE-191 (Integer Underflow) vulnerabilities →