{"id":"CVE-2026-85880","title":"Heap-based buffer overflow in Windows ALPC allows an authorized attacker to elevate privileges locally.","summary":"Heap-based buffer overflow in Windows ALPC allows an authorized attacker to elevate privileges locally.","severity":"high","cvss":7.8,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","cwe":["CWE-122","CWE-908"],"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_server_2012","windows_server_2012 = r2","windows_server_2016 < 10.0.14393.9512","windows_server_2019 < 10.0.17763.9245","windows_server_2022 < 10.0.20348.5622"],"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_server_2016 10.0.14393.9512","windows_server_2019 10.0.17763.9245","windows_server_2022 10.0.20348.5622"],"published":"2026-09-08","updated":"2026-09-09","sourceUpdated":"2026-09-09T05:18:19.193","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-85880","references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-85880","label":"secure@microsoft.com"},{"url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-85880","label":"134c704f-9b21-4f2e-91b3-4a467353bcc0"}],"tags":["nvd","cve.org","in-the-wild","exploit-available","kev"],"exploited":true,"exploitAvailable":true,"ssvc":{"exploitation":"active","automatable":"no","technicalImpact":"total","timestamp":"2026-09-08T18:44:18.362923Z"},"kev":true,"kevDateAdded":"2026-09-08","kevDueDate":"2026-09-22","kevRansomware":false,"zeroDay":true,"ingestedAt":"2026-09-08T19:08:49.634Z","epss":0.00572,"epssPercentile":0.45798,"slug":"CVE-2026-85880","body":"## Overview\n\nHeap-based buffer overflow in Windows ALPC 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_server_2012`\n- `windows_server_2012 = r2`\n- `windows_server_2016 < 10.0.14393.9512`\n- `windows_server_2019 < 10.0.17763.9245`\n- `windows_server_2022 < 10.0.20348.5622`\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_server_2016 10.0.14393.9512`\n- `windows_server_2019 10.0.17763.9245`\n- `windows_server_2022 10.0.20348.5622`","depth":"abyssal","depthScore":68,"depthScoreParts":{"impact":42.9,"likelihood":0.1,"exploitation":25,"ransomware":0},"changes":[{"seq":202056,"id":"CVE-2026-85880","ts":1789400047349,"field":"zero_day","old":"false","new":"true"},{"seq":202055,"id":"CVE-2026-85880","ts":1789400047349,"field":"kev","old":"false","new":"true"},{"seq":200783,"id":"CVE-2026-85880","ts":1789397615667,"field":"zero_day","old":"true","new":"false"},{"seq":200782,"id":"CVE-2026-85880","ts":1789397615667,"field":"kev","old":"true","new":"false"},{"seq":199476,"id":"CVE-2026-85880","ts":1789395518164,"field":"zero_day","old":"false","new":"true"},{"seq":199475,"id":"CVE-2026-85880","ts":1789395518164,"field":"kev","old":"false","new":"true"},{"seq":198721,"id":"CVE-2026-85880","ts":1789392243257,"field":"zero_day","old":"true","new":"false"},{"seq":198720,"id":"CVE-2026-85880","ts":1789392243257,"field":"kev","old":"true","new":"false"},{"seq":197054,"id":"CVE-2026-85880","ts":1789384291675,"field":"zero_day","old":"false","new":"true"},{"seq":197053,"id":"CVE-2026-85880","ts":1789384291675,"field":"kev","old":"false","new":"true"},{"seq":196382,"id":"CVE-2026-85880","ts":1789383756597,"field":"zero_day","old":"true","new":"false"},{"seq":196381,"id":"CVE-2026-85880","ts":1789383756597,"field":"kev","old":"true","new":"false"},{"seq":195825,"id":"CVE-2026-85880","ts":1789380633974,"field":"zero_day","old":"false","new":"true"},{"seq":195824,"id":"CVE-2026-85880","ts":1789380633974,"field":"kev","old":"false","new":"true"},{"seq":194183,"id":"CVE-2026-85880","ts":1789378782335,"field":"zero_day","old":"true","new":"false"},{"seq":194182,"id":"CVE-2026-85880","ts":1789378782335,"field":"kev","old":"true","new":"false"},{"seq":192970,"id":"CVE-2026-85880","ts":1789376514303,"field":"zero_day","old":"false","new":"true"},{"seq":192969,"id":"CVE-2026-85880","ts":1789376514303,"field":"kev","old":"false","new":"true"},{"seq":191757,"id":"CVE-2026-85880","ts":1789373630350,"field":"zero_day","old":"true","new":"false"},{"seq":191756,"id":"CVE-2026-85880","ts":1789373630350,"field":"kev","old":"true","new":"false"},{"seq":190542,"id":"CVE-2026-85880","ts":1789369474469,"field":"zero_day","old":"false","new":"true"},{"seq":190541,"id":"CVE-2026-85880","ts":1789369474469,"field":"kev","old":"false","new":"true"},{"seq":189329,"id":"CVE-2026-85880","ts":1789368408259,"field":"zero_day","old":"true","new":"false"},{"seq":189328,"id":"CVE-2026-85880","ts":1789368408259,"field":"kev","old":"true","new":"false"},{"seq":188112,"id":"CVE-2026-85880","ts":1789365229949,"field":"zero_day","old":"false","new":"true"},{"seq":188111,"id":"CVE-2026-85880","ts":1789365229949,"field":"kev","old":"false","new":"true"},{"seq":186899,"id":"CVE-2026-85880","ts":1789363470544,"field":"zero_day","old":"true","new":"false"},{"seq":186898,"id":"CVE-2026-85880","ts":1789363470544,"field":"kev","old":"true","new":"false"},{"seq":185685,"id":"CVE-2026-85880","ts":1789361228285,"field":"zero_day","old":"false","new":"true"},{"seq":185684,"id":"CVE-2026-85880","ts":1789361228285,"field":"kev","old":"false","new":"true"},{"seq":184472,"id":"CVE-2026-85880","ts":1789358362914,"field":"zero_day","old":"true","new":"false"},{"seq":184471,"id":"CVE-2026-85880","ts":1789358362914,"field":"kev","old":"true","new":"false"},{"seq":182723,"id":"CVE-2026-85880","ts":1789354316333,"field":"zero_day","old":"false","new":"true"},{"seq":182722,"id":"CVE-2026-85880","ts":1789354316333,"field":"kev","old":"false","new":"true"},{"seq":181516,"id":"CVE-2026-85880","ts":1789353316946,"field":"zero_day","old":"true","new":"false"},{"seq":181515,"id":"CVE-2026-85880","ts":1789353316946,"field":"kev","old":"true","new":"false"},{"seq":180309,"id":"CVE-2026-85880","ts":1789350283961,"field":"zero_day","old":"false","new":"true"},{"seq":180308,"id":"CVE-2026-85880","ts":1789350283961,"field":"kev","old":"false","new":"true"},{"seq":179102,"id":"CVE-2026-85880","ts":1789348292118,"field":"zero_day","old":"true","new":"false"},{"seq":179101,"id":"CVE-2026-85880","ts":1789348292118,"field":"kev","old":"true","new":"false"},{"seq":177895,"id":"CVE-2026-85880","ts":1789346369258,"field":"zero_day","old":"false","new":"true"},{"seq":177894,"id":"CVE-2026-85880","ts":1789346369258,"field":"kev","old":"false","new":"true"},{"seq":176688,"id":"CVE-2026-85880","ts":1789343183772,"field":"zero_day","old":"true","new":"false"},{"seq":176687,"id":"CVE-2026-85880","ts":1789343183772,"field":"kev","old":"true","new":"false"},{"seq":174805,"id":"CVE-2026-85880","ts":1789334874890,"field":"zero_day","old":"false","new":"true"},{"seq":174804,"id":"CVE-2026-85880","ts":1789334874890,"field":"kev","old":"false","new":"true"},{"seq":173600,"id":"CVE-2026-85880","ts":1789333686062,"field":"zero_day","old":"true","new":"false"},{"seq":173599,"id":"CVE-2026-85880","ts":1789333686062,"field":"kev","old":"true","new":"false"},{"seq":172414,"id":"CVE-2026-85880","ts":1789331092247,"field":"zero_day","old":"false","new":"true"},{"seq":172413,"id":"CVE-2026-85880","ts":1789331092247,"field":"kev","old":"false","new":"true"}]}