CVE-2026-62715: CWE-191: Integer Underflow (Wrap or Wraparound) in Microsoft Windows Server 2012 R2
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 involves an integer underflow (wrap or wraparound) in the Windows DHCP Server on Windows 10 Version 1607 (build 10.0.14393.0). The flaw permits an unauthorized attacker to disclose information across an adjacent network segment. The vulnerability is tracked as CWE-191 and has a CVSS 3.1 base score of 6.5, indicating a medium severity level. Microsoft has published an official fix for this issue, as detailed in their security update guide.
Potential Impact
An attacker without privileges can exploit this integer underflow vulnerability in the DHCP Server to disclose sensitive information over an adjacent network. The impact is limited to confidentiality (high impact on confidentiality), with no integrity or availability impact reported.
Mitigation Recommendations
Microsoft has released an official fix for this vulnerability. Users and administrators should apply the security update provided by Microsoft for Windows 10 Version 1607 (build 10.0.14393.0) as soon as possible to remediate this issue.
CVE-2026-62715: CWE-191: Integer Underflow (Wrap or Wraparound) in Microsoft Windows Server 2012 R2
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
Microsoft
Windows Server 2012 R2
Microsoft
Windows Server 2012 R2 (Server Core installation)
Microsoft
Windows Server 2016
Microsoft
Windows Server 2016 (Server Core installation)
Microsoft
Windows Server 2019
Microsoft
Windows Server 2019 (Server Core installation)
Microsoft
Windows Server 2022
Microsoft
Windows Server 2025
Microsoft
Windows Server 2025 (Server Core installation)
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability involves an integer underflow (wrap or wraparound) in the Windows DHCP Server on Windows 10 Version 1607 (build 10.0.14393.0). The flaw permits an unauthorized attacker to disclose information across an adjacent network segment. The vulnerability is tracked as CWE-191 and has a CVSS 3.1 base score of 6.5, indicating a medium severity level. Microsoft has published an official fix for this issue, as detailed in their security update guide.
Potential Impact
An attacker without privileges can exploit this integer underflow vulnerability in the DHCP Server to disclose sensitive information over an adjacent network. The impact is limited to confidentiality (high impact on confidentiality), with no integrity or availability impact reported.
Mitigation Recommendations
Microsoft has released an official fix for this vulnerability. Users and administrators should apply the security update provided by Microsoft for Windows 10 Version 1607 (build 10.0.14393.0) as soon as possible to remediate this issue.
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-2026-62715","vendor":"Microsoft"}]
Threat ID: 6a7b580cbf8831d539155a67
Added to database: 08/11/2026, 17:12:44 UTC
Last enriched: 08/11/2026, 22:26:53 UTC
Last updated: 09/24/2026, 02:39:06 UTC
Views: 22
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
External Links
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.