{"id":"CVE-2026-72947","title":"Integer underflow (wrap or wraparound) in Windows File History Service allows an authorized attacker to elevate privileges locally.","summary":"Integer underflow (wrap or wraparound) in Windows File History Service allows an authorized attacker to elevate privileges locally.","severity":"medium","cvss":6.4,"cvssVector":"CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H","cwe":["CWE-191"],"vendor":"microsoft","product":"windows_10_1607","affected":["windows_10_1607 < 10.0.14393.9512","windows_10_1809 < 10.0.17763.9245","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_2016 < 10.0.14393.9512","windows_server_2019 < 10.0.17763.9245"],"patched":["windows_10_1607 10.0.14393.9512","windows_10_1809 10.0.17763.9245","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_2016 10.0.14393.9512","windows_server_2019 10.0.17763.9245"],"published":"2026-09-08","updated":"2026-09-21","sourceUpdated":"2026-09-21T20:01:41.583","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-72947","references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-72947","label":"secure@microsoft.com"}],"tags":["nvd","cve.org"],"epss":0.00263,"epssPercentile":0.18399,"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"total","timestamp":"2026-09-08T18:57:07.376701Z"},"ingestedAt":"2026-09-08T19:08:49.624Z","slug":"CVE-2026-72947","body":"## Overview\n\nInteger underflow (wrap or wraparound) in Windows File History Service allows an authorized attacker to elevate privileges locally.\n\n## Affected\n\n- `windows_10_1607 < 10.0.14393.9512`\n- `windows_10_1809 < 10.0.17763.9245`\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_2016 < 10.0.14393.9512`\n- `windows_server_2019 < 10.0.17763.9245`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `windows_10_1607 10.0.14393.9512`\n- `windows_10_1809 10.0.17763.9245`\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_2016 10.0.14393.9512`\n- `windows_server_2019 10.0.17763.9245`","depth":"sunlit","depthScore":35,"depthScoreParts":{"impact":35.2,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}