CVE-2018-0824 Microsoft COM for Windows Deserialization of Untrusted Data

Exploited in the wild High 7.5 Published 9 May 2018 Updated 21 Oct 2025

Remote attackers can execute arbitrary code by exploiting improper handling of serialized objects in Microsoft COM for Windows.

Exploited in the wild: Since 5 Aug 2024
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-2018-0824?

CVE-2018-0824 is a high-severity unsafe deserialization vulnerability in Microsoft Windows 10 1507, published on 9 May 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

A remote code execution vulnerability exists in "Microsoft COM for Windows" when it fails to properly handle serialized objects, aka "Microsoft COM for Windows Remote Code Execution Vulnerability." This affects Windows 7, Windows Server 2012 R2, Windows RT 8.1, Windows Server 2008, Windows Server 2012, Windows 8.1, Windows Server 2016, Windows Server 2008 R2, Windows 10, Windows 10 Servers.

Weakness: CWE-502

Which versions are affected by CVE-2018-0824?

It affects 13 products.

Products include Microsoft Windows 10 1507, Microsoft Windows 10 1607, Microsoft Windows 10 1703, Microsoft Windows 10 1709, Microsoft Windows 10 1803, Microsoft Windows 7 and 7 more.

How do I fix CVE-2018-0824?

No fix has been published for CVE-2018-0824 yet. Limit exposure of the affected software until one is available. US federal agencies must fix it by 26 Aug 2024.

Upgrade, and only deserialise data from trusted sources or with an allow-list of types. More about Unsafe deserialization.

Is CVE-2018-0824 being exploited?

Yes. Attackers have exploited CVE-2018-0824 in the wild since at least 5 Aug 2024.

Public exploit code: 1 Metasploit module, 1 Exploit-DB entry and 1 proofs of concept on GitHub.

All Microsoft Windows 10 1507 vulnerabilities

Sources

Also known as GHSA-6w8g-777w-9mcc.