CVE-2018-0803

Name: CVE-2018-0803
Creator: NVD / NIST
Published: 2018-01-04T14:29:01.473+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 3.66%

Last modified Jun 17, 2026

CVE-2018-0803 is a vulnerability of currently unknown severity. Microsoft Edge in Microsoft Windows 10 Gold, 1511, 1607, 1703, 1709, and Windows Server 2016 allows an attacker to access information from one domain and inject it into another domain, due to how Microsoft Edge enforces cross-domain policies, aka "Microsoft Edge Elevation of Privilege Vulnerability".. EPSS estimates a 3.66% chance of exploitation in the next 30 days.

Description

Microsoft Edge in Microsoft Windows 10 Gold, 1511, 1607, 1703, 1709, and Windows Server 2016 allows an attacker to access information from one domain and inject it into another domain, due to how Microsoft Edge enforces cross-domain policies, aka "Microsoft Edge Elevation of Privilege Vulnerability".

Metrics

EPSS Probability

3.66%

88.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-863

Affected Software

Vendor	Product	Versions
Microsoft	Edge	All versions

References

http://www.securityfocus.com/bid/102384Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1040100Third Party Advisory, VDB Entry
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-0803Patch, Vendor Advisory
http://www.securityfocus.com/bid/102384Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1040100Third Party Advisory, VDB Entry
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-0803Patch, Vendor Advisory

Timeline

Published: Jan 4, 2018
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2018-0803?

How severe is CVE-2018-0803?

Severity scoring for CVE-2018-0803 is pending analysis. The EPSS model estimates a 3.66% probability of exploitation in the next 30 days.

How do I fix CVE-2018-0803?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2018-0803?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST