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CVE-2026-50518 is a critical heap-based buffer overflow vulnerability in Windows DHCP Server. The flaw resides in the server’s handling of network-supplied input, including malicious domain name data in crafted requests, and can trigger heap memory corruption in the DHCP service. An unauthorized attacker can reach the vulnerable service remotely over the network and exploit the overflow without authentication or user interaction. Successful exploitation can result in remote code execution in the context of the DHCP Server service.
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What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.
What an attacker gets, and what they’ve been doing with it.
If you can’t patch tonight, do this now.
Patch, then assume compromise.
No public exploits tracked yet. Mallory keeps watching.
No public exploit code observed for this vulnerability.
8 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A critical heap overflow remote code execution vulnerability in the DHCP server that can be exploited over the network without authentication.
A critical heap-based buffer overflow vulnerability in Windows DHCP Server that is unauthenticated and network-reachable, potentially enabling remote code execution.
A Windows DHCP Server remote code execution vulnerability highlighted in the patch release.
A critical remote code execution vulnerability affecting Windows DHCP Server.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.