CVE-2026-42980: CWE-191: Integer Underflow (Wrap or Wraparound) in Microsoft Windows 10 Version 1607
Integer underflow (wrap or wraparound) in Windows NT OS Kernel allows an authorized attacker to elevate privileges locally.
AI Analysis
Technical Summary
This vulnerability involves an integer underflow (wrap or wraparound) condition in the Windows NT OS Kernel on Windows 10 Version 1607 (build 10.0.14393.0). Exploitation requires local access with some privileges and can lead to privilege escalation, granting the attacker higher system privileges. The vulnerability is tracked as CVE-2026-42980 and has been assigned a high CVSS v3.1 score of 7.8. Microsoft has released an official patch to remediate this issue.
Potential Impact
An authorized local attacker can exploit this integer underflow vulnerability to elevate their privileges on the affected Windows 10 system, potentially gaining higher-level access and control. This could lead to full system compromise depending on the privileges obtained.
Mitigation Recommendations
An official fix is available from Microsoft for this vulnerability. It is recommended to apply the security update provided in the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-42980 to remediate the issue.
CVE-2026-42980: CWE-191: Integer Underflow (Wrap or Wraparound) in Microsoft Windows 10 Version 1607
Description
Integer underflow (wrap or wraparound) in Windows NT OS Kernel allows an authorized attacker to elevate privileges locally.
CVSS v3.1
Score 7.8high
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability involves an integer underflow (wrap or wraparound) condition in the Windows NT OS Kernel on Windows 10 Version 1607 (build 10.0.14393.0). Exploitation requires local access with some privileges and can lead to privilege escalation, granting the attacker higher system privileges. The vulnerability is tracked as CVE-2026-42980 and has been assigned a high CVSS v3.1 score of 7.8. Microsoft has released an official patch to remediate this issue.
Potential Impact
An authorized local attacker can exploit this integer underflow vulnerability to elevate their privileges on the affected Windows 10 system, potentially gaining higher-level access and control. This could lead to full system compromise depending on the privileges obtained.
Mitigation Recommendations
An official fix is available from Microsoft for this vulnerability. It is recommended to apply the security update provided in the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-42980 to remediate the issue.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-04-30T23:43:50.745Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-42980","vendor":"Microsoft"}]
Threat ID: 6a284cc88dd33fbd856648e2
Added to database: 6/9/2026, 5:26:32 PM
Last enriched: 6/9/2026, 10:56:31 PM
Last updated: 6/10/2026, 6:30:12 AM
Views: 4
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