{"id":"CVE-2026-83521","title":"Out-of-bounds read in Windows IKE Extension allows an authorized attacker to disclose information over a network.","summary":"Out-of-bounds read in Windows IKE Extension allows an authorized attacker to disclose information over a network.","severity":"medium","cvss":6.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","cwe":["CWE-125"],"published":"2026-10-13","updated":"2026-10-13","sourceUpdated":"2026-10-13T21:18:25.173","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-83521","references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-83521","label":"secure@microsoft.com"}],"tags":["nvd","cve.org"],"ingestedAt":"2026-10-13T19:43:29.063Z","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_10_version_21h2 >= 10.0.19044.0 < 10.0.19044.7807","windows_10_version_22h2 >= 10.0.19045.0 < 10.0.19044.7807","windows_11_version_23h2 >= 10.0.22631.0 < 10.0.22631.7652","windows_11_version_23h2 >= 10.0.22631.0 < 10.0.22631.7652","windows_11_version_24h2 >= 10.0.26100.0 < 10.0.26100.9711","windows_11_version_25h2 >= 10.0.26200.0 < 10.0.26200.9711","windows_11_version_26h1 >= 10.0.28000.0 < 10.0.28000.3231","windows_11_version_26h2 >= 10.0.26300.0 < 10.0.26300.9711","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":"2026-10-13T20:40:45.866552Z"},"slug":"CVE-2026-83521","body":"## Overview\n\nOut-of-bounds read in Windows IKE Extension allows an authorized attacker to disclose information over a network.\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,"exploitation":0,"ransomware":0},"changes":[]}