CVE-2026-42989
Improper link resolution before file access ('link following') in Winlogon allows an authorized attacker to elevate privileges locally.
CSIRTS triage
- What
- An authorized attacker can elevate privileges locally due to improper link resolution before file access.
- Who is affected
- Authorized users of Winlogon are affected.
- Urgency
- Remediation is high urgency due to the potential for privilege escalation.
- Action
- Apply the latest security updates from Microsoft.
AI-assisted analysis generated from the source advisory — verify against the original.
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Exploitation outlook
- Moderate exploitation risk2.3% 30-day exploitation probability. Patch within normal cadence, watch for KEV listing. Riskier than 81% of all EPSS-scored CVEs.
Advisory coverage (1)
- highCVE-2026-42989: Winlogon Elevation of Privilege Vulnerabilitymsrc · 2026-06-09
External references
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[](https://www.csirts.com/cve/CVE-2026-42989)