CVE-2026-45491
Improper link resolution before file access ('link following') in .NET allows an unauthorized attacker to perform tampering locally.
CSIRTS triage
- What
- Improper link resolution before file access in .NET allows unauthorized tampering.
- Who is affected
- Users of .NET applications.
- Urgency
- Remediation is medium priority as it could lead to local tampering but is not actively exploited.
- Action
- Patch .NET to address the improper link resolution issue.
AI-assisted analysis generated from the source advisory — verify against the original.
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Exploitation outlook
- Low exploitation risk0.39% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 31% of all EPSS-scored CVEs.
Advisory coverage (1)
- mediumCVE-2026-45491: .NET Tampering Vulnerabilitymsrc · 2026-06-09
External references
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[](https://www.csirts.com/cve/CVE-2026-45491)