CVE-2020-1476
ASP.NET and .NET Elevation of Privilege Vulnerability
- Published
- Updated
- Reserved
- Assigned by
- microsoft
Description
An elevation of privilege vulnerability exists when ASP.NET or .NET web applications running on IIS improperly allow access to cached files. An attacker who successfully exploited this vulnerability could gain access to restricted files. To exploit this vulnerability, an attacker would need to send a specially crafted request to an affected server. The update addresses the vulnerability by changing how ASP.NET and .NET handle requests.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 3.1 | Medium5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N |
- EPSS (exploitation in 30 days)
- 1.1% · top 33% of all CVEs (7 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.5.
Weakness
- Elevation of Privilege
Affected products
Microsoft · Microsoft .NET Framework 4.8
- affected 4.8.0 – < publication
Microsoft · Microsoft .NET Framework 3.5 AND 4.8
- affected 4.8.0 – < publication
Microsoft · Microsoft .NET Framework 2.0 Service Pack 2
- affected 2.0.0 – < publication
Microsoft · Microsoft .NET Framework 4.5.2
- affected 4.0.0.0 – < publication
Microsoft · Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.2
- affected 4.0.0.0 – < publication
Microsoft · Microsoft .NET Framework 3.5 AND 4.7.2
- affected 4.7.0 – < publication
Microsoft · Microsoft .NET Framework 3.5 AND 4.6.2/4.7/4.7.1/4.7.2
- affected 3.0.0.0 – < publication
Microsoft · Microsoft .NET Framework 3.5 AND 4.6/4.6.1/4.6.2
- affected 3.5.0 – < publication
Microsoft · Microsoft .NET Framework 3.5 AND 4.7.1/4.7.2
- affected 3.0 – < publication
Microsoft · Microsoft .NET Framework 4.6
- affected 4.0.0.0 – < publication
Microsoft · Microsoft .NET Framework 3.5
- affected 3.5.0 – < publication
Microsoft · Microsoft .NET Framework 3.5.1
- affected 3.5.0 – < publication
References (1)
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1476 (opens in a new tab)x_refsource_MISCx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2020-1476)Record last updated .