CVE-2026-62742: Windows DHCP Server Information Disclosure Vulnerability
Integer underflow (wrap or wraparound) in Windows DHCP Server allows an unauthorized attacker to disclose information over an adjacent network.
CSIRTS triage
- What
- Integer underflow in DHCP Server allows remote information disclosure over adjacent network.
- Who is affected
- Unauthorized attackers on the same network segment as Windows DHCP servers.
- Urgency
- Medium priority; network-adjacent information disclosure is lower risk but should be patched to prevent reconnaissance.
- Action
- Apply Microsoft security update for Windows DHCP Server.
AI-assisted analysis generated from the source advisory — verify against the original.
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Details
Original advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-62742
Exploitation outlook
EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.
- Low exploitation riskCVE-2026-627420.48% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 39% of all EPSS-scored CVEs.
Referenced CVEs
| CVE | CSIRTS overview | External |
|---|---|---|
| CVE-2026-62742 | coverage & exploitation status | NVD · CVE.org |
Same CVEs, other sources
How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.
- critical[NEW] [critical] Microsoft Windows Products: Multiple vulnerabilitiescert-bund
- unknownexploitedNCSC-2026-0284 [1.00] [M/H] Vulnerabilities patched in Microsoft Windowsncsc-nl
- mediumCVE-2026-62742: Integer underflow (wrap or wraparound) in Windows DHCP Server allows an unauthorized attacker …nvd
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