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CVE-2026-77873 lenovo system update: Incorrect Default Permissions

7.0 highEPSS 0.1%

High (7.0) in lenovo system update. EPSS 0.1% estimated probability of exploitation activity in the next 30 days.

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An improper permissions vulnerability was reported in Lenovo System Update that could allow a local authenticated user to execute code with elevated privileges.

Severity

CVSS 4.0

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

CVSS 3.1

7.3 high
CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
EPSS
0.1% estimated probability of exploitation activity in the next 30 days; 3rd percentile. Scored 2026-11-13. A forecast for this CVE across the internet, not for your own systems.
CWE
CWE-276 Incorrect Default Permissions
OWASP Top 10
A01:2025 Broken Access Control
Published
Modified
Assigned by
lenovo (CNA)
NVD analysis
Awaiting analysis
Record from
the NVD, synced

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Affected

  • lenovo:system update

Versions

From the CNA's record in the CVE List.

ProductAffected
Lenovo System Updatethrough 5.08.03.59

Attack patterns (CAPEC)

  • CAPEC-1 Accessing Functionality Not Properly Constrained by ACLs Likelihood: High · Severity: High
  • CAPEC-81 Web Server Logs Tampering Likelihood: Medium · Severity: High
  • CAPEC-127 Directory Indexing Likelihood: High · Severity: Medium

The attack patterns MITRE's CAPEC relates to this record's weaknesses, as MITRE names them. Credits.

References

Check your stackJSON