#VU46017 Buffer overflow in Firefox ESR and Mozilla Firefox

Published: 2020-08-25 | Updated: 2020-08-26

Vulnerability identifier: #VU46017

Vulnerability risk: High


CVE-ID: CVE-2020-15670


Exploitation vector: Network

Exploit availability:

Vulnerable software:
Firefox ESR
Client/Desktop applications / Web browsers
Mozilla Firefox
Client/Desktop applications / Web browsers

Vendor: Mozilla


The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error when processing HTML content. A remote attacker can create a specially crafted web page, trick the victim into opening it, trigger memory corruption and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Install updates from vendor's website.

Vulnerable software versions

Firefox ESR: 78.0 - 78.1.0

Mozilla Firefox: 60.0 - 79.0

Fixed software versions


External links

Q & A

Can this vulnerability be exploited remotely?

Is there known malware, which exploits this vulnerability?

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