CVE-2026-54987: CWE-122: Heap-based Buffer Overflow in Microsoft Windows 10 Version 1607
CVE-2026-54987 is a heap-based buffer overflow vulnerability in the Windows Overlay Filter component of Microsoft Windows 10 Version 1607 (build 10.0.14393.0). This flaw allows an authorized local attacker to elevate privileges on the affected system. The vulnerability has a high severity rating with a CVSS score of 7.8. An official fix is available from Microsoft to address this issue.
AI Analysis
Technical Summary
This vulnerability (CVE-2026-54987) involves a heap-based buffer overflow in the Windows Overlay Filter on Windows 10 Version 1607 (build 10.0.14393.0). Exploitation requires local access with some level of authorization and can result in privilege escalation, allowing the attacker to gain higher privileges than intended. The vulnerability is classified under CWE-122 (Heap-based Buffer Overflow). Microsoft has released an official fix to remediate this issue.
Potential Impact
Successful exploitation of this vulnerability can lead to full compromise of the affected system by elevating the attacker's privileges. This includes potential complete control over the system, impacting confidentiality, integrity, and availability. There are no known exploits in the wild at this time.
Mitigation Recommendations
An official fix is available from Microsoft. It is recommended to apply the security update provided in the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-54987 to remediate this vulnerability. No additional mitigation is required beyond applying the official patch.
CVE-2026-54987: CWE-122: Heap-based Buffer Overflow in Microsoft Windows 10 Version 1607
Description
CVE-2026-54987 is a heap-based buffer overflow vulnerability in the Windows Overlay Filter component of Microsoft Windows 10 Version 1607 (build 10.0.14393.0). This flaw allows an authorized local attacker to elevate privileges on the affected system. The vulnerability has a high severity rating 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 (CVE-2026-54987) involves a heap-based buffer overflow in the Windows Overlay Filter on Windows 10 Version 1607 (build 10.0.14393.0). Exploitation requires local access with some level of authorization and can result in privilege escalation, allowing the attacker to gain higher privileges than intended. The vulnerability is classified under CWE-122 (Heap-based Buffer Overflow). Microsoft has released an official fix to remediate this issue.
Potential Impact
Successful exploitation of this vulnerability can lead to full compromise of the affected system by elevating the attacker's privileges. This includes potential complete control over the system, impacting confidentiality, integrity, and availability. There are no known exploits in the wild at this time.
Mitigation Recommendations
An official fix is available from Microsoft. It is recommended to apply the security update provided in the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-54987 to remediate this vulnerability. No additional mitigation is required beyond applying the official patch.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-06-16T14:10:05.868Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-54987","vendor":"Microsoft"}]
Threat ID: 6a566f7d68715ace43e6bba0
Added to database: 07/14/2026, 17:18:53 UTC
Last enriched: 07/15/2026, 01:02:46 UTC
Last updated: 07/15/2026, 01:02:46 UTC
Views: 3
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