CVE-2016-3248 ChakraCore RCE Vulnerability

What is CVE-2016-3248?

CVE-2016-3248 is a high-severity memory corruption vulnerability in Microsoft Edge, published on 13 Jul 2016. 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

The Microsoft (1) JScript 9, (2) VBScript, and (3) Chakra JavaScript engines, as used in Microsoft Internet Explorer 9 through 11, Microsoft Edge, and other products, allow remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via a crafted web site, aka "Scripting Engine Memory Corruption Vulnerability," a different vulnerability than CVE-2016-3259.

Weakness: CWE-119

Which versions are affected by CVE-2016-3248?

2 open source packages ship an affected version, including Microsoft.ChakraCore. It affects 2 products.

Products include Microsoft Edge, Microsoft Internet Explorer.

How do I fix CVE-2016-3248?

No fix has been published for CVE-2016-3248 yet. Limit exposure of the affected software until one is available.

Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.

Is CVE-2016-3248 being exploited?

There is no known exploitation of CVE-2016-3248 in the wild and no public exploit code.

Other vulnerabilities in Microsoft Edge

• CVE-2021-26411 Microsoft Internet Explorer Memory Corruption Exploited High 8.8
• CVE-2016-7200 Microsoft Edge Memory Corruption Exploited High 8.8
• CVE-2016-7201 Microsoft Edge Memory Corruption Exploited High 8.8
• CVE-2017-0037 Microsoft Edge and Internet Explorer Type Confusion Exploited High 8.1
• CVE-2016-3351 Microsoft Internet Explorer and Edge Information Disclosure Exploited Medium 6.5

All Microsoft Edge vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-q6mv-8vh9-4ggj.