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CVE-2019-11708: Mozilla Firefox and Thunderbird Sandbox Escape Vulnerability

CVSS: 10.0v3.1CriticalKEVAnalyzed
AliasesALPINE-CVE-2019-11708MGASA-2019-0202SUSE-SU-2019:1682-1
Published 23-07-2019Last modified 21-10-2025
Open JSON

Vulnerability summary

CVE-2019-11708 is a critical (CVSS 10.0) Improper Input Validation vulnerability in Mozilla Firefox and Thunderbird. It is known to be exploited: CISA lists it, first on 23-05-2022. EPSS estimates a 55.87% chance of exploitation in the next 30 days, higher than 99% of scored vulnerabilities. 1 public exploit is recorded.

Overall risk
90/100
0100
Critical · default modelHow is this calculated?
CVSS score
10.0/10
010
Critical · v3.1 (CVE.org)
EPSS score
55.87%
0%100%
Critical · 0.00 pp in 30 days
KEVListedCISA
RansomwareNone recordedNo known use recorded
Public exploits1exploit-database

Advisory lineage

Upstream 0 · Downstream 18 · Related 8
DLA-1836-1DSA-4471-1MGASA-2019-0201MGASA-2020-0009OPENSUSE-SU-2019:1606-1OPENSUSE-SU-2019:1664-1

Timeline

  1. 23-07-2019
    PublishedVulnerability first disclosed.
  2. 23-05-2022
    Added to CISA KEVMozilla Firefox and Thunderbird Sandbox Escape Vulnerability
  3. 13-06-2022
    CISA remediation dueApply updates per vendor instructions.
  4. 21-10-2025
    Last modifiedVulnerability information updated.

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.

CVSS metrics

7 scores · 5 sources · 3 versions

EPSS trend

Probability

55.87%

Chance of exploitation in the next 30 days

Percentile

99%

Versus all other CVEs

30-day change

0.00 pp

From 55.87% on 19-09-2026

19-09-202619-10-2026
EPSS score
55.87%

Known exploited

Compare KEV catalogs
CISA KEVListed
Added
23-05-2022
Federal due date
13-06-2022

CISA required action

Apply updates per vendor instructions. nvd.nist.gov/vuln/detail/CVE-2019-11708

Public exploits

1 found
  • exploit-databaselocalwindows_x86-64Unverified

    Mozilla FireFox (Windows 10 x64) - Full Chain Client Side Attack

    Maturity: poc

Weaknesses

CWE · root cause

Affected systems

Suse21 products
  • MozillaFirefox&distro=SUSE Enterprise Storage 4< 60.7.2-109.80.1
  • MozillaFirefox&distro=SUSE Enterprise Storage 5< 60.7.2-109.80.1
  • MozillaFirefox&distro=SUSE Linux Enterprise Desktop 12 SP3< 60.7.2-109.80.1
  • MozillaFirefox&distro=SUSE Linux Enterprise Desktop 12 SP4< 60.7.2-109.80.1
  • MozillaFirefox&distro=SUSE Linux Enterprise Module for Desktop Applications 15< 60.7.2-3.48.1
Mozilla3 products
Debian2 products
  • firefox-esr< 60.7.2esr-1 | < 60.7.2esr-1~deb9u1
  • thunderbird< 1:60.7.2-1
Mageia2 products
  • firefox< 60.7.2-1.mga6
  • firefox-l10n< 60.7.2-1.mga6
Ubuntu2 products
  • firefox< 67.0.4+build1-0ubuntu0.16.04.1 | < 67.0.4+build1-0ubuntu0.18.04.1
  • thunderbird< 1:60.7.2+build2-0ubuntu0.16.04.1 | < 1:60.7.2+build2-0ubuntu0.18.04.1
Alpine1 product
  • mozjs60< 60.7.2-r0
Opensuse1 product
  • MozillaFirefox&distro=openSUSE Leap 15.1< 60.7.2-lp151.2.7.1

7 vendors · 32 products

References

23 links
Show all 23 references