{"id":"CVE-2026-83997","title":"Use after free in Windows Message Queuing allows an unauthorized attacker to execute code over a network.","summary":"Use after free in Windows Message Queuing allows an unauthorized attacker to execute code over a network.","severity":"high","cvss":8.1,"cvssVector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","cwe":["CWE-416"],"vendor":"microsoft","product":"windows_10_21h2","affected":["windows_10_21h2 < 10.0.19044.7725","windows_10_22h2 < 10.0.19045.7725","windows_11_23h2 < 10.0.22631.7582","windows_11_24h2 < 10.0.26100.9445","windows_11_25h2 < 10.0.26200.9445","windows_11_26h1 < 10.0.28000.2954","windows_server_2022 < 10.0.20348.5622","windows_server_2025 < 10.0.26100.33438"],"patched":["windows_10_21h2 10.0.19044.7725","windows_10_22h2 10.0.19045.7725","windows_11_23h2 10.0.22631.7582","windows_11_24h2 10.0.26100.9445","windows_11_25h2 10.0.26200.9445","windows_11_26h1 10.0.28000.2954","windows_server_2022 10.0.20348.5622","windows_server_2025 10.0.26100.33438"],"published":"2026-09-08","updated":"2026-09-11","sourceUpdated":"2026-09-11T21:17:27.193","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-83997","references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-83997","label":"secure@microsoft.com"}],"tags":["nvd","cve.org"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"total","timestamp":"2026-09-11T20:48:01.334595Z"},"epss":0.00503,"epssPercentile":0.41886,"ingestedAt":"2026-09-08T19:08:49.633Z","slug":"CVE-2026-83997","body":"## Overview\n\nUse after free in Windows Message Queuing allows an unauthorized attacker to execute code over a network.\n\n## Affected\n\n- `windows_10_21h2 < 10.0.19044.7725`\n- `windows_10_22h2 < 10.0.19045.7725`\n- `windows_11_23h2 < 10.0.22631.7582`\n- `windows_11_24h2 < 10.0.26100.9445`\n- `windows_11_25h2 < 10.0.26200.9445`\n- `windows_11_26h1 < 10.0.28000.2954`\n- `windows_server_2022 < 10.0.20348.5622`\n- `windows_server_2025 < 10.0.26100.33438`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `windows_10_21h2 10.0.19044.7725`\n- `windows_10_22h2 10.0.19045.7725`\n- `windows_11_23h2 10.0.22631.7582`\n- `windows_11_24h2 10.0.26100.9445`\n- `windows_11_25h2 10.0.26200.9445`\n- `windows_11_26h1 10.0.28000.2954`\n- `windows_server_2022 10.0.20348.5622`\n- `windows_server_2025 10.0.26100.33438`","depth":"twilight","depthScore":45,"depthScoreParts":{"impact":44.6,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}