CVE-2026-45491
CVE-2026-45491 is a medium-severity vulnerability in Microsoft .net with a CVSS 3.x base score of 6.2. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-59.
Key facts
- Severity: Medium (CVSS 3.x base score 6.2)
- EPSS exploit prediction: 0% (31st percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2026-35675
- Weakness: CWE-59
- Affected product: Microsoft .net
- Published:
- Last modified:
Description
Improper link resolution before file access ('link following') in .NET allows an unauthorized attacker to perform tampering locally.
Frequently asked questions
- What is CVE-2026-45491?
- Improper link resolution before file access ('link following') in .NET allows an unauthorized attacker to perform tampering locally.
- How severe is CVE-2026-45491?
- CVE-2026-45491 has a CVSS 3.x base score of 6.2, rated medium severity. It is exploitable over local access with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.
- Is CVE-2026-45491 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (31st percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2026-45491?
- CVE-2026-45491 affects Microsoft .net. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2026-45491?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- Does CVE-2026-45491 have an EU (EUVD) identifier?
- Yes. CVE-2026-45491 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-35675.
- When was CVE-2026-45491 published?
- CVE-2026-45491 was published on 2026-06-09 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:*
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