CVE-2026-85880Vulnerability
Microsoft Windows Heap-Based Buffer Overflow Vulnerability
Reported by 14 independent sources · first reported by Tenable · last reported
Last reported 8 days ago
Fix due 22 Sep 2026
Used by ransomware: not knownCISA KEV catalogue
higher than 89% of CVEsFIRST EPSS, as of 23 Oct 2026
What the reports say
17 reports, newest first · the exact sentence from each-
Mind the (Patch) Gap , Part 3: Analysis with Volexity Volcano, Threat Intel, and MCP“CVE-2026-85880”
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September 2026 CVE Landscape“CVE-2026-85880”
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October 2026 Patch Tuesday forecast: Time for an Office cleanup“Despite this massive number, only two, CVE-2026-85880 and CVE-2026-81963, were reported Known Exploited and none were Publicly Disclosed.”
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Chinese Hackers Exploit Chrome-Windows Zero-Day Chain to Deploy CLEANGULP Malware“… chaining of two vulnerabilities in Chrome (CVE-2026-85046, CVE-2026-87491) and one impacting Windows Advanced Local Procedure Call (CVE-2026-85880) to break out of the browser's sandbox and achieve remote code execution.”
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Mind the (Patch) Gap, Part 2: Fake Websites Used to Deploy Chrome & Windows 0-Day Exploits“… the simultaneous use of multiple chained zero-day exploits in Google Chrome (CVE-2026-85046, CVE-2026-87491) and Microsoft Windows (CVE-2026-85880) by two different Chinese advanced persistent threat (APT) actors.”
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September Patch Tuesday haul includes 973 CVEs“CVE-2026-85880 -- Windows Advanced Local Procedure Call (ALPC) Elevation of Privilege Vulnerability”
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14th September – Threat Intelligence Report“CVE-2026-85880 and CVE-2026-81963 both allow local attackers to elevate privileges to SYSTEM, while 20 additional flaws could enable unauthenticated remote code execution without user interaction.”
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Four groups caught using the same Chrome and Windows exploit kit“The first V8 vulnerability is tracked as CVE-2026-85046, and the Windows bug is tracked as CVE-2026-85880.”
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Chinese espionage groups swarm to exploit triple-link chain of zero-days“… include: CVE-2026-85046 and CVE-2026-87491, remote-code execution defects in the JavaScript engine for Chromium-based browsers; and CVE-2026-85880, a privilege-escalation zero-day that Microsoft disclosed Tuesday in Windows Advanced Local Procedure Call.”
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Mind the (Patch) Gap: Multiple Chinese Threat Actors Chain 0-day Exploits in Chrome & Windows“It then exploits a third vulnerability in the Windows kernel (CVE-2026-85880) to escape Chrome’s sandboxed renderer process and inject code into the Chrome browser process.”
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Microsoft Shatters Patch Tuesday Record With 974 CVE Fixes in September 2026“The first of these is CVE-2026-85880, assigned a high severity rating of 7.8.”
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Risky Bulletin: Ukraine's top prosecutor resigns amid scam call center scandal“CVE-2026-85880 - Windows Advanced Local Procedure Call (ALPC) Elevation of Privilege Vulnerability”
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Security Alert: Microsoft Releases September 2026 Security Updates“CVE-2026-85880”
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Microsoft Patch Tuesday for September 2026 — Snort rules and prominent vulnerabilities“CVE-2026-85880 affects Windows Advanced Local Procedure Call (ALPC).”
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Microsoft Plugs Nearly 1,000 Security Holes“There are two “zero-day” flaws fixed this month that are being actively exploited: both CVE-2026-81963 and CVE-2026-85880 allow an attacker to elevate their privileges on Windows system.”
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Microsoft and Adobe Patch Tuesday, September 2026 Security Update Review“CVE-2026-85880: Windows Advanced Local Procedure Call (ALPC) Elevation of Privilege Vulnerability”
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Microsoft’s September 2026 Patch Tuesday addresses 964 CVEs (CVE-2026-81963, CVE-2026-85880)“Microsoft’s September 2026 Patch Tuesday addresses 964 CVEs (CVE-2026-81963, CVE-2026-85880)”
Indicators reported together
named in the same reports- chinadigitaltimes[.]topin 2 reports
- americanprgoress[.]topin 2 reports
- thecovnresation[.]comin 2 reports
- cloud.shinewrist[.]netin 2 reports
- idscan[.]netin 1 report
Copy these 5 indicators · defanged
Also named with it: CVE-2026-81963, CVE-2026-85046, CVE-2026-87491, CVE-2026-69730, CVE-2026-69829, CVE-2026-86060, CVE-2026-69676, CVE-2026-69525, CVE-2026-85706, CVE-2026-67276, CVE-2026-86218, CVE-2026-75650, CVE-2026-86950, CVE-2026-60004, CVE-2026-58231
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