CVE-2018-0803 Security feature bypass in Microsoft Edge

Medium 4.2 Published Updated

Attackers can bypass cross-domain policies in Microsoft Edge to access and inject information across domains, leading to privilege escalation.

Exploited in the wild
Not known
Login needed
Not needed
Attackable
Over the internet
Victim action needed
A user has to click or open something
Fix
None listed

What is CVE-2018-0803?

CVE-2018-0803 is a medium-severity vulnerability in Microsoft Edge, published on 4 Jan 2018. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

Official 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".

Weakness: CWE-863

Which versions are affected by CVE-2018-0803?

It affects 1 product.

Products include Microsoft Edge.

How do I fix CVE-2018-0803?

No fix has been published for CVE-2018-0803 yet. Limit exposure of the affected software until one is available.

Is CVE-2018-0803 being exploited?

There is no known exploitation of CVE-2018-0803 in the wild and no public exploit code.

All Microsoft Edge vulnerabilities

Sources

Also known as GHSA-rc8x-g2jf-pcr5.

Is CVE-2018-0803 in your software?

Upload an SBOM and sbomify checks it against every vulnerability here, every day.

Check your SBOMs for free