CVE-2026-45491: .NET Tampering Vulnerability
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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Details
Original advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-45491
Exploitation outlook
EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.
- Low exploitation riskCVE-2026-454910.39% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 31% of all scored CVEs.
Referenced CVEs
| CVE | CSIRTS overview | External |
|---|---|---|
| CVE-2026-45491 | coverage & exploitation status | NVD · CVE.org |
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