CVE-2026-62803: CWE-59: Improper Link Resolution Before File Access ('Link Following') in Microsoft Windows 10 Version 1607
Improper link resolution before file access ('link following') in Windows DHCP Server allows an authorized attacker to elevate privileges locally.
AI Analysis
Technical Summary
This vulnerability (CWE-59) in Windows 10 Version 1607's DHCP Server component involves improper link resolution before file access, commonly known as 'link following'. An authorized attacker with local access can exploit this flaw to elevate their privileges on the affected system. The CVSS 3.1 score is 7.8, indicating high severity with impacts to confidentiality, integrity, and availability. Microsoft has released an official fix for this vulnerability.
Potential Impact
An authorized local attacker can leverage this vulnerability to gain elevated privileges, potentially allowing full control over the affected system. The vulnerability impacts confidentiality, integrity, and availability of the system resources due to improper handling of symbolic links in the DHCP Server.
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-2026-62803 to remediate this vulnerability.
CVE-2026-62803: CWE-59: Improper Link Resolution Before File Access ('Link Following') in Microsoft Windows 10 Version 1607
Description
Improper link resolution before file access ('link following') in Windows DHCP Server allows an authorized attacker to elevate privileges locally.
CVSS v3.1
Score 7.8high
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CWE-59) in Windows 10 Version 1607's DHCP Server component involves improper link resolution before file access, commonly known as 'link following'. An authorized attacker with local access can exploit this flaw to elevate their privileges on the affected system. The CVSS 3.1 score is 7.8, indicating high severity with impacts to confidentiality, integrity, and availability. Microsoft has released an official fix for this vulnerability.
Potential Impact
An authorized local attacker can leverage this vulnerability to gain elevated privileges, potentially allowing full control over the affected system. The vulnerability impacts confidentiality, integrity, and availability of the system resources due to improper handling of symbolic links in the DHCP Server.
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-2026-62803 to remediate this vulnerability.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-07-14T21:08:07.965Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-62803","vendor":"Microsoft"}]
Threat ID: 6a7b581abf8831d539156026
Added to database: 08/11/2026, 17:12:58 UTC
Last enriched: 08/11/2026, 21:27:50 UTC
Last updated: 08/12/2026, 02:41:18 UTC
Views: 2
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