critical 10.0

CVE-2019-11708 kev in the critical feed json

Insufficient vetting of parameters passed with the Prompt:Open IPC message between child and parent processes can result in the non-sandbox…

published 2019-07-23 7 y ago modified 2026-06-17 4 mo ago also EUVD-2019-3378

cvss: 10.0; version 3.1, CNA
cisa kev: Exploited; added 2022-05-23
epss: 55.9%; EPSS 55.9% chance of exploitation in 30 days, percentile 99%
public exploits: 1; Exploit-DB

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.

Patch / fix

cisa required action Apply updates per vendor instructions.

fixed in 3 distros 7

Mozilla Firefox ESR 60.7.2
Mozilla Firefox 67.0.4
Mozilla Thunderbird 60.7.2

debian ubuntu red hat suse opensuse alpine arch linux

firefox-esr Debian 14, Debian 13, Debian 12 60.7.2esr-1
thunderbird Debian 14, Debian 13, Debian 12 1:60.7.2-1

debian advisories DEBIAN-CVE-2019-11708

firefox Ubuntu 16.04 LTS 67.0.4+build1-0ubuntu0.16.04.1
firefox Ubuntu 18.04 LTS 67.0.4+build1-0ubuntu0.18.04.1
thunderbird Ubuntu 16.04 LTS 1:60.7.2+build2-0ubuntu0.16.04.1
thunderbird Ubuntu 18.04 LTS 1:60.7.2+build2-0ubuntu0.18.04.1

ubuntu advisories UBUNTU-CVE-2019-11708

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

thunderbird RHEL 8 60.7.2-2.el8_0
thunderbird RHEL 7 60.7.2-2.el7_6
thunderbird RHEL 6 60.7.2-2.el6_10
firefox RHEL 6 60.7.2-1.el6_10
firefox RHEL 7 60.7.2-1.el7_6
firefox RHEL 8 60.7.2-3.el8_0

red hat advisories RHSA-2019:1623 RHSA-2019:1626 RHSA-2019:1624 RHSA-2019:1604 RHSA-2019:1603 RHSA-2019:1696

MozillaFirefox SLES for SAP 12 SP4, SLES for SAP 12 SP3, SLES for SAP 12 SP2 +16 more 60.7.2-109.80.1
MozillaThunderbird SLE Workstation Extension 15 SP1, SLE Workstation Extension 15 60.7.2-3.43.1
MozillaFirefox SLE Module for Desktop Applications 15 SP1, SLE Module for Desktop Applications 15 60.7.2-3.48.1
MozillaFirefox SLES 11 SP4-LTSS 60.8.0esr-78.43.2

suse advisories SUSE-SU-2019:14124-1 SUSE-SU-2019:1684-1 SUSE-SU-2019:1683-1 SUSE-SU-2019:1682-1

firefox-esr openSUSE Tumbleweed 128.5.1-1.1
MozillaFirefox openSUSE Tumbleweed 92.0-1.2
MozillaThunderbird openSUSE Tumbleweed 91.1.1-1.1
MozillaThunderbird Package Hub 12 60.7.2-85.1
MozillaThunderbird openSUSE Leap 15.1, openSUSE Leap 15.0 60.7.2-lp151.2.7.1
MozillaFirefox openSUSE Leap 15.1 60.7.2-lp151.2.7.1

opensuse advisories openSUSE-SU-2024:14572-1 openSUSE-SU-2024:10600-1 openSUSE-SU-2024:10601-1 openSUSE-SU-2019:1664-1 openSUSE-SU-2019:1606-1 openSUSE-SU-2019:1595-1

mozjs60 Alpine 3.12, Alpine 3.11, Alpine 3.10 60.7.2-r0
mozjs68 Alpine 3.12 60.7.2-r0
firefox-esr Alpine 3.23, Alpine 3.22, Alpine 3.21 +12 more 60.7.2-r0

alpine advisories ALPINE-CVE-2019-11708

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

firefox Arch Linux 67.0.4-1

arch linux advisories AVG-997

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2019-11708 updated 2026-01-09 cvss 10.0

Mozilla: Sandbox escape using Prompt:Open

Red Hat Enterprise Linux AppStream (v. 8) firefox 60.7.2-3.el8_0, thunderbird 60.7.2-2.el8_0
fixed: vendor fix RHSA-2019:1696
Red Hat Enterprise Linux Client (v. 7) firefox 60.7.2-1.el7_6, thunderbird 60.7.2-2.el7_6 Red Hat Enterprise Linux Client Optional (v. 7) firefox 60.7.2-1.el7_6
fixed: vendor fix RHSA-2019:1603
Red Hat Enterprise Linux Desktop (v. 6) firefox 60.7.2-1.el6_10, thunderbird 60.7.2-2.el6_10 Red Hat Enterprise Linux Desktop Optional (v. 6) firefox 60.7.2-1.el6_10
fixed: vendor fix RHSA-2019:1604
Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server (v. 7) firefox 60.7.2-1.el7_6
fixed: vendor fix RHSA-2019:1603
Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server Optional (v. 7) thunderbird 60.7.2-2.el7_6
fixed: vendor fix RHSA-2019:1626
Red Hat Enterprise Linux HPC Node Optional (v. 6) firefox 60.7.2-1.el6_10 Red Hat Enterprise Linux Server (v. 6) firefox 60.7.2-1.el6_10
fixed: vendor fix RHSA-2019:1604
Red Hat Enterprise Linux Server (v. 7) firefox 60.7.2-1.el7_6
fixed: vendor fix RHSA-2019:1603
Red Hat Enterprise Linux Server Optional (v. 6) firefox 60.7.2-1.el6_10, thunderbird 60.7.2-2.el6_10
fixed: vendor fix RHSA-2019:1604

show 5 more

Red Hat Enterprise Linux Server Optional (v. 7) firefox 60.7.2-1.el7_6, thunderbird 60.7.2-2.el7_6
fixed: vendor fix RHSA-2019:1603
Red Hat Enterprise Linux Workstation (v. 6) firefox 60.7.2-1.el6_10, thunderbird 60.7.2-2.el6_10
fixed: vendor fix RHSA-2019:1604
Red Hat Enterprise Linux Workstation (v. 7) firefox 60.7.2-1.el7_6, thunderbird 60.7.2-2.el7_6
fixed: vendor fix RHSA-2019:1603
Red Hat Enterprise Linux Workstation Optional (v. 6) firefox 60.7.2-1.el6_10
fixed: vendor fix RHSA-2019:1604
Red Hat Enterprise Linux Workstation Optional (v. 7) firefox 60.7.2-1.el7_6
fixed: vendor fix RHSA-2019:1603

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Timeline

2019-06-20 0-day patched (Project Zero)
2019-07-23 Published
2019-12-07 First public exploit (EDB-47752)
2022-05-23 Added to CISA KEV
2022-06-13 CISA patch deadline
2025-02-07 CISA SSVC: exploitation active

Known exploited

Added: 4 y ago (2022-05-23)
Patch by: 2022-06-13 (4 y ago)
Ransomware: Not known
Required action: Apply updates per vendor instructions.
Vendor, product: Mozilla, Firefox and Thunderbird
CISA name: Mozilla Firefox and Thunderbird Sandbox Escape Vulnerability

Zero-day

Detected in real attacks while still unknown to the vendor and the public, per Google Project Zero's 0day In-the-Wild tracker.

Patched: 2019-06-20
Details: project zero tracker

CISA SSVC

Exploitation: Active, exploited in the wild
Automatable: no
Technical impact: total
Assessed: 21 mo ago (2025-02-07)

Exploit prediction

55.87% chance of exploitation in the next 30 days, higher than 99% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

EDB-47752 Mozilla FireFox (Windows 10 x64) - Full Chain Client Side Attack local, 2019-12-07

CVSS scores

assigned by	version	score	vector
CISA ADP	3.1	10.0	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
NVD	3.1	10.0	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
CNA	3.1	10.0	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
NVD	2.0	10.0	AV:N/AC:L/Au:N/C:C/I:C/A:C

Affected products

Mozilla Firefox ESR
Mozilla Firefox
Mozilla Thunderbird

Classification

Weakness

CWE-20 Improper Input Validation

References

security.gentoo.org /glsa/201908-12
vendor-advisory, third-party-advisory
mozilla.org /security/advisories/mfsa2019-19/
vendor-advisory
mozilla.org /security/advisories/mfsa2019-20/
vendor-advisory
bugzilla.mozilla.org /show_bug.cgi?id=1559858
issue-tracking, vendor-advisory
packetstormsecurity.com /files/155592/Mozilla-Firefox-Windows-64-Bit-Chain-Exploit.html
third-party-advisory, vdb-entry
cisa.gov /known-exploited-vulnerabilities-catalog?field_cve=CVE-2019-11708
government-resource, us-government-resource

Sources

CVE List CVE-2019-11708
NVD CVE-2019-11708

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary