CVE-2018-0878 XML external entity in Windows Remote Assistance

Low 3.1 Published 14 Mar 2018 Updated 4 Apr 2025

An attacker can exploit XML External Entity processing in Windows Remote Assistance to disclose sensitive information.

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-2018-0878?

CVE-2018-0878 is a low-severity vulnerability in Microsoft Windows 10, published on 14 Mar 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

Windows Remote Assistance in Microsoft Windows Server 2008 SP2 and R2 SP1, Windows 7 SP1, Windows 8.1 and RT 8.1, Windows Server 2012 and R2, Windows 10 Gold, 1511, 1607, 1703, and 1709, Windows Server 2016 and Windows Server, version 1709 allows an information disclosure vulnerability due to how XML External Entities (XXE) are processed, aka "Windows Remote Assistance Information Disclosure Vulnerability".

Weakness: CWE-611

Which versions are affected by CVE-2018-0878?

It affects 7 products.

Products include Microsoft Windows 10, Microsoft Windows 7, Microsoft Windows 8.1, Microsoft Windows Rt 8.1, Microsoft Windows Server 2008, Microsoft Windows Server 2012 and 1 more.

How do I fix CVE-2018-0878?

No fix has been published for CVE-2018-0878 yet. Limit exposure of the affected software until one is available.

Is CVE-2018-0878 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2018-0878 exists.

Public exploit code: 1 Exploit-DB entry.

All Microsoft Windows 10 vulnerabilities

Sources

Also known as GHSA-9p6p-h2p9-wv46.