CVE-2019-11708

CriticalCVSS 10.0/10Known exploited (CISA KEV)Last modified Jun 17, 2026

Description

Insufficient vetting of parameters passed with the Prompt:Open IPC message between child and parent processes can result in the non-sandboxed parent process opening web content chosen by a compromised child process. When combined with additional vulnerabilities this could result in executing arbitrary code on the user's computer. This vulnerability affects Firefox ESR < 60.7.2, Firefox < 67.0.4, and Thunderbird < 60.7.2.

Metrics

CVSS 3.1 10.0/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

Weakness enumeration

CWE-20

Affected software

Vendor	Product	Versions
Mozilla	Firefox ESR	>= unspecified, < 60.7.2
Mozilla	Firefox	>= unspecified, < 67.0.4
Mozilla	Thunderbird	>= unspecified, < 60.7.2

References

http://packetstormsecurity.com/files/155592/Mozilla-Firefox-Windows-64-Bit-Chain-Exploit.htmlThird Party Advisory, VDB Entry
https://bugzilla.mozilla.org/show_bug.cgi?id=1559858Issue Tracking, Vendor Advisory
https://security.gentoo.org/glsa/201908-12Third Party Advisory
https://www.mozilla.org/security/advisories/mfsa2019-19/Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2019-20/Vendor Advisory
http://packetstormsecurity.com/files/155592/Mozilla-Firefox-Windows-64-Bit-Chain-Exploit.htmlThird Party Advisory, VDB Entry
https://bugzilla.mozilla.org/show_bug.cgi?id=1559858Issue Tracking, Vendor Advisory
https://security.gentoo.org/glsa/201908-12Third Party Advisory
https://www.mozilla.org/security/advisories/mfsa2019-19/Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2019-20/Vendor Advisory
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2019-11708US Government Resource

Timeline

Published: Jul 23, 2019
Last modified: Jun 17, 2026
Added to CISA KEV: May 23, 2022
NVD status: Analyzed

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