Vulnerability record
CVE-2026-77873
The short answer
CVE-2026-77873 affects Lenovo System Update and is rated high (CVSS 7.0). It is not in CISA's Known Exploited Vulnerabilities catalog.
What it is
An improper permissions vulnerability was reported in Lenovo System Update that could allow a local authenticated user to execute code with elevated privileges.
Weakness: CWE-276.
Severity
7.0 high
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
Exploited (CISA KEV)
Not listed
CISA lists confirmed exploitation only
EPSS, next 30 days
No score
FIRST scores CVEs within a day of publication
How it can be exploited
- Attack vector
- Local
- Attack complexity
- Low
- Attack requirements
- None
- Privileges required
- Low
- User interaction
- Passive
- Confidentiality impact
- High
- Integrity impact
- High
- Availability impact
- High
Affected products
System Update. NVD's record lists the exact affected versions.
References
Questions
Is CVE-2026-77873 being exploited?
It is not in CISA's Known Exploited Vulnerabilities catalog as of 2026-11-11.
How do I fix CVE-2026-77873?
Follow the vendor advisory in the references below. NVD lists the affected versions under its configurations.
From NVD, CISA KEV, FIRST EPSS and OSV.dev, checked . Status on NVD: Received. The description is NVD's text, quoted as published.
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