{"id":"CVE-2026-83787","title":"Insufficient verification of data authenticity in Windows DHCP Server allows an authorized attacker to bypass a security feature locally.","summary":"Insufficient verification of data authenticity in Windows DHCP Server allows an authorized attacker to bypass a security feature locally.","severity":"medium","cvss":5.5,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N","cwe":["CWE-288"],"published":"2026-10-13","updated":"2026-10-14","sourceUpdated":"2026-10-14T17:19:32.490","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-83787","references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-83787","label":"secure@microsoft.com"}],"tags":["nvd","cve.org"],"epss":0.00327,"epssPercentile":0.25635,"ingestedAt":"2026-10-13T19:43:29.112Z","vendor":"Microsoft","product":"Windows 10 Version 1607","affected":["windows_10_version_1607 >= 10.0.14393.0 < 10.0.14393.9612","windows_10_version_1809 >= 10.0.17763.0 < 10.0.17763.9376","windows_server_2012 >= 6.2.9200.0 < 6.2.9200.26434","windows_server_2012_server_core_installation >= 6.2.9200.0 < 6.2.9200.26434","windows_server_2012_r2 >= 6.3.9600.0 < 6.3.9600.23470","windows_server_2012_r2_server_core_installation >= 6.3.9600.0 < 6.3.9600.23470","windows_server_2016 >= 10.0.14393.0 < 10.0.14393.9612","windows_server_2016_server_core_installation >= 10.0.14393.0 < 10.0.14393.9612","windows_server_2019 >= 10.0.17763.0 < 10.0.17763.9376","windows_server_2019_server_core_installation >= 10.0.17763.0 < 10.0.17763.9376","windows_server_2022 >= 10.0.20348.0 < 10.0.20348.5761","windows_server_2025 >= 10.0.26100.0 < 10.0.26100.33650","windows_server_2025_server_core_installation >= 10.0.26100.0 < 10.0.26100.33650"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-10-14T16:29:02.953180Z"},"slug":"CVE-2026-83787","body":"## Overview\n\nInsufficient verification of data authenticity in Windows DHCP Server allows an authorized attacker to bypass a security feature locally.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":30,"depthScoreParts":{"impact":30.3,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}