CVE-2026-54124: CWE-190: Integer Overflow or Wraparound in Microsoft Windows 10 Version 21H2
CVE-2026-54124 is an integer overflow or wraparound vulnerability in Windows Terminal on Microsoft Windows 10 Version 21H2 (build 10.0.19044.0). This flaw allows an unauthorized local attacker to execute code on the affected system. The vulnerability has a high severity with a CVSS score of 7.8. An official fix is available from Microsoft to address this issue.
AI Analysis
Technical Summary
This vulnerability involves an integer overflow or wraparound in Windows Terminal on Windows 10 Version 21H2 (build 10.0.19044.0). Exploitation of this flaw could allow an unauthorized attacker to execute code locally, potentially leading to full system compromise. The vulnerability is tracked as CVE-2026-54124 and is classified under CWE-190 (Integer Overflow or Wraparound). Microsoft has published an official fix to remediate this issue.
Potential Impact
Successful exploitation of this vulnerability could allow an unauthorized local attacker to execute arbitrary code with the privileges of the affected user. This can lead to complete compromise of confidentiality, integrity, and availability of the affected system.
Mitigation Recommendations
An official fix is available from Microsoft. Users and administrators should apply the security update provided in the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-54124 to remediate this vulnerability.
CVE-2026-54124: CWE-190: Integer Overflow or Wraparound in Microsoft Windows 10 Version 21H2
Description
CVE-2026-54124 is an integer overflow or wraparound vulnerability in Windows Terminal on Microsoft Windows 10 Version 21H2 (build 10.0.19044.0). This flaw allows an unauthorized local attacker to execute code on the affected system. The vulnerability has a high severity with a CVSS score of 7.8. An official fix is available from Microsoft to address this issue.
CVSS v3.1
Score 7.8high
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability involves an integer overflow or wraparound in Windows Terminal on Windows 10 Version 21H2 (build 10.0.19044.0). Exploitation of this flaw could allow an unauthorized attacker to execute code locally, potentially leading to full system compromise. The vulnerability is tracked as CVE-2026-54124 and is classified under CWE-190 (Integer Overflow or Wraparound). Microsoft has published an official fix to remediate this issue.
Potential Impact
Successful exploitation of this vulnerability could allow an unauthorized local attacker to execute arbitrary code with the privileges of the affected user. This can lead to complete compromise of confidentiality, integrity, and availability of the affected system.
Mitigation Recommendations
An official fix is available from Microsoft. Users and administrators should apply the security update provided in the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-54124 to remediate this vulnerability.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-06-11T20:33:37.836Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-54124","vendor":"Microsoft"}]
Threat ID: 6a5676ad68715ace43f097d0
Added to database: 07/14/2026, 17:49:33 UTC
Last enriched: 07/14/2026, 20:09:40 UTC
Last updated: 07/15/2026, 02:27:37 UTC
Views: 2
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