VulnerabilityModified
CVE-2019-0657
A vulnerability exists in certain .Net Framework API's and Visual Studio in the way they parse URL's, aka '.NET Framework and Visual Studio Spoofing Vulnerability'.
MEDIUM 5.9EPSS 4.52%
Does this matter?
Lower severity and a low EPSS score (4.52%). Track it; it rarely justifies an emergency change on its own.
Description
A vulnerability exists in certain .Net Framework API's and Visual Studio in the way they parse URL's, aka '.NET Framework and Visual Studio Spoofing Vulnerability'.
- CVSS 3.0
- 5.9 MEDIUMCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
- EPSS
- 4.52% probability · 91th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-20
- Affected
- microsoft/.net core · microsoft/powershell core · microsoft/visual studio 2017 · microsoft/.net framework
- Source
- secure@microsoft.com
EPSS 4.5% since 27 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- http://www.securityfocus.com/bid/106890Third Party Advisory, VDB Entry
- https://access.redhat.com/errata/RHSA-2019:0349Third Party Advisory
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-0657Patch, Vendor Advisory
- http://www.securityfocus.com/bid/106890Third Party Advisory, VDB Entry
- https://access.redhat.com/errata/RHSA-2019:0349Third Party Advisory
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-0657Patch, Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.