{"id":"CVE-2026-62814","title":"Windows DHCP Server Information Disclosure Vulnerability","summary":"Integer underflow (wrap or wraparound) in Windows DHCP Server allows an unauthorized attacker to disclose information over an adjacent network.","severity":"medium","cvss":6.5,"cvssVector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C","cvssSource":"cna","cwe":["CWE-191","CWE-125"],"vendor":"Microsoft","product":"Windows Server 2012","affected":["windows_server_2012 >= 6.2.9200.0 < 6.2.9200.26280","windows_server_2012_server_core_installation >= 6.2.9200.0 < 6.2.9200.26280","windows_server_2012_r2 >= 6.3.9600.0 < 6.3.9600.23338","windows_server_2012_r2_server_core_installation >= 6.3.9600.0 < 6.3.9600.23338","windows_server_2016 >= 10.0.14393.0 < 10.0.14393.9418","windows_server_2016_server_core_installation >= 10.0.14393.0 < 10.0.14393.9418","windows_server_2019 >= 10.0.17763.0 < 10.0.17763.9121","windows_server_2019_server_core_installation >= 10.0.17763.0 < 10.0.17763.9121","windows_server_2022 >= 10.0.20348.0 < 10.0.20348.5499","windows_server_2025 >= 10.0.26100.0 < 10.0.26100.33296","windows_server_2025_server_core_installation >= 10.0.26100.0 < 10.0.26100.33296"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-08-11T19:32:34.651189Z"},"published":"2026-08-11","updated":"2026-09-16","sourceUpdated":"2026-09-16T16:25:53.351Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-62814","references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-62814","label":"Windows DHCP Server Information Disclosure Vulnerability"}],"tags":["cve.org"],"epss":0.00537,"epssPercentile":0.43992,"ingestedAt":"2026-09-08T18:07:34.891Z","slug":"CVE-2026-62814","body":"## Overview\n\nInteger underflow (wrap or wraparound) in Windows DHCP Server allows an unauthorized attacker to disclose information over an adjacent network.\n\n## Affected\n\n- `windows_server_2012 >= 6.2.9200.0 < 6.2.9200.26280`\n- `windows_server_2012_server_core_installation >= 6.2.9200.0 < 6.2.9200.26280`\n- `windows_server_2012_r2 >= 6.3.9600.0 < 6.3.9600.23338`\n- `windows_server_2012_r2_server_core_installation >= 6.3.9600.0 < 6.3.9600.23338`\n- `windows_server_2016 >= 10.0.14393.0 < 10.0.14393.9418`\n- `windows_server_2016_server_core_installation >= 10.0.14393.0 < 10.0.14393.9418`\n- `windows_server_2019 >= 10.0.17763.0 < 10.0.17763.9121`\n- `windows_server_2019_server_core_installation >= 10.0.17763.0 < 10.0.17763.9121`\n- `windows_server_2022 >= 10.0.20348.0 < 10.0.20348.5499`\n- `windows_server_2025 >= 10.0.26100.0 < 10.0.26100.33296`\n- `windows_server_2025_server_core_installation >= 10.0.26100.0 < 10.0.26100.33296`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":36,"depthScoreParts":{"impact":35.8,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}