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Security restrictions bypass in Mozilla Firefox

Published: 2019-06-11
Severity Low
Patch available YES
Number of vulnerabilities 1
CVE ID CVE-2019-11702
Exploitation vector Network
Public exploit N/A
Vulnerable software
Mozilla Firefox
Client/Desktop applications / Web browsers

Vendor Mozilla

Security Advisory

This security advisory describes one low risk vulnerability.

1) Exposed dangerous method or function

Severity: Low

CVSSv3: 3.7 [CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2019-11702

CWE-ID: CWE-749 - Exposed Dangerous Method or Function

Exploit availability: No


The vulnerability allows a remote attacker to execute dangerous files on the system.
The vulnerability exists due to the way Firefox handles hyperlinks to files associated with Internet Explorer, e.g. IE.HTTP:. A remote attacker can create a hyperlink that leads to a file at a known location and open it with Internet Explorer.


Install updates from vendor's website.

Vulnerable software versions

Mozilla Firefox: 61.0, 61.0.1, 61.0.2, 62.0, 62.0.1, 62.0.2, 62.0.3, 63.0, 63.0.1, 63.0.3, 64.0, 64.0.1, 64.0.2, 65.0, 65.0.1, 65.0.2, 66.0, 66.0.1, 66.0.2, 66.0.3, 66.0.4, 66.0.5, 67.0, 67.0.1

CPE External links

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

How the attacker can exploit this vulnerability?

The attacker would have to trick the victim to visit a specially crafted website.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.