VulnerabilityModified

CVE-2018-1039

HIGH 7.8EPSS 1.29%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (1.29%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

Description

A security feature bypass vulnerability exists in .Net Framework which could allow an attacker to bypass Device Guard, aka ".NET Framework Device Guard Security Feature Bypass Vulnerability." This affects Microsoft .NET Framework 4.7.1, Microsoft .NET Framework 4.6, Microsoft .NET Framework 3.5, Microsoft .NET Framework 4.7/4.7.1, Microsoft .NET Framework 3.0, Microsoft .NET Framework 3.5.1, Microsoft .NET Framework 4.5.2, Microsoft .NET Framework 4.6.2/4.7/4.7.1, Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7/4.7.1, Microsoft .NET Framework 2.0, Microsoft .NET Framework 4.6/4.6.1/4.6.2.

CVSS 3.0: 7.8 HIGHCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS: 1.29% probability · 70th percentile
Public exploits: None in Exploit-DB
CISA KEV: Not listed
Affected: microsoft/.net framework
Source: secure@microsoft.com

EPSS trend

EPSS 1.3% 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/104072Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1040851Third Party Advisory, VDB Entry
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-1039Patch, Vendor Advisory
http://www.securityfocus.com/bid/104072Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1040851Third Party Advisory, VDB Entry
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-1039Patch, Vendor Advisory

Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.