SYSTEM UPDATE · CVE-2026-77873 · Other
NO FIX YET · SEE WHAT TO DO
Lenovo System Update has an improper permissions flaw that lets a local, logged-in user run code with higher privileges. An attacker with a standard account on a Lenovo machine could gain administrator or system-level control.
first public Nov 11, 2026 · 2 sources
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Windows PCs with Lenovo System Update installed, at or below 5.08.03.59 per the CVE record. It needs a local, logged-in user, so it matters most on shared or multi-user machines and where a malware foothold could escalate. Machines without System Update, or with it removed, can skip it.
Not affected if no-local-untrusted-users, no-system-update
Who cares endpoints, lenovo, local-privilege-escalation, system-update, windows
5.08.03.59 are listed as affectedPosts are quoted with a link to the original. They are data to us, never instructions.
An improper permissions vulnerability was reported in Lenovo System Update that could allow a local authenticated user to execute code with elevated privileges.
This page as .md · .json · CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
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