CVE-2020-1046
CVE-2020-1046 is a high-severity vulnerability in Microsoft .net Framework with a CVSS 3.x base score of 7.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.
Key facts
- Severity: High (CVSS 3.x base score 7.8)
- CVSS v2: 9.3
- EPSS exploit prediction: 4% (89th percentile)
- Actively exploited: Not listed in CISA KEV
- Affected product: Microsoft .net Framework
- Published:
- Last modified:
Description
A remote code execution vulnerability exists when Microsoft .NET Framework processes input. An attacker who successfully exploited this vulnerability could take control of an affected system. To exploit the vulnerability, an attacker would need to be able to upload a specially crafted file to a web application. The security update addresses the vulnerability by correcting how .NET Framework processes input.
Frequently asked questions
- What is CVE-2020-1046?
- A remote code execution vulnerability exists when Microsoft .NET Framework processes input. An attacker who successfully exploited this vulnerability could take control of an affected system. To exploit the vulnerability, an attacker would need to be able to upload a specially crafted file to a web application. The security update addresses the vulnerability by correcting how .NET Framework processes input.
- How severe is CVE-2020-1046?
- CVE-2020-1046 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2020-1046 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (89th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2020-1046?
- CVE-2020-1046 primarily affects Microsoft .net Framework. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
- How do I fix CVE-2020-1046?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
- When was CVE-2020-1046 published?
- CVE-2020-1046 was published on 2020-08-17 and last updated on 2026-06-17.
References
Affected products (4)
- cpe:2.3:a:microsoft:.net_framework:2.0:sp2:*:*:*:*:*:*
- cpe:2.3:a:microsoft:.net_framework:3.5:*:*:*:*:*:*:*
- cpe:2.3:a:microsoft:.net_framework:4.7.2:*:*:*:*:*:*:*
- cpe:2.3:a:microsoft:.net_framework:3.5.1:*:*:*:*:*:*:*
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