CVE-2026-62718: CWE-191: Integer Underflow (Wrap or Wraparound) in Microsoft Windows 10 Version 1607
Integer underflow (wrap or wraparound) in Windows DHCP Server allows an unauthorized attacker to disclose information over an adjacent network.
AI Analysis
Technical Summary
This vulnerability (CVE-2026-62718) involves an integer underflow (wrap or wraparound) in the Windows DHCP Server on Windows 10 Version 1607 (build 10.0.14393.0). The flaw can be exploited by an unauthenticated attacker with adjacent network access to disclose sensitive information. The vulnerability is classified under CWE-191 (Integer Underflow) and has a CVSS v3.1 base score of 6.5, indicating medium severity. Microsoft has released an official fix to address this issue.
Potential Impact
Successful exploitation can lead to unauthorized information disclosure over an adjacent network. There is no impact on integrity or availability. No known exploits are reported in the wild at this time.
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-2026-62718 to remediate this vulnerability.
CVE-2026-62718: CWE-191: Integer Underflow (Wrap or Wraparound) in Microsoft Windows 10 Version 1607
Description
Integer underflow (wrap or wraparound) in Windows DHCP Server allows an unauthorized attacker to disclose information over an adjacent network.
CVSS v3.1
Score 6.5medium
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-62718) involves an integer underflow (wrap or wraparound) in the Windows DHCP Server on Windows 10 Version 1607 (build 10.0.14393.0). The flaw can be exploited by an unauthenticated attacker with adjacent network access to disclose sensitive information. The vulnerability is classified under CWE-191 (Integer Underflow) and has a CVSS v3.1 base score of 6.5, indicating medium severity. Microsoft has released an official fix to address this issue.
Potential Impact
Successful exploitation can lead to unauthorized information disclosure over an adjacent network. There is no impact on integrity or availability. No known exploits are reported in the wild at this time.
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-2026-62718 to remediate this vulnerability.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-07-14T20:58:12.786Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-62718","vendor":"Microsoft"}]
Threat ID: 6a7b580dbf8831d539155b21
Added to database: 08/11/2026, 17:12:45 UTC
Last enriched: 08/11/2026, 22:13:57 UTC
Last updated: 08/12/2026, 00:12:10 UTC
Views: 2
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