Vulnerability DatabaseCVE-2019-9811
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CVE-2019-9811
Published:July 23, 2019
Updated:April 21, 2026
As part of a winning Pwn2Own entry, a researcher demonstrated a sandbox escape by installing a malicious language pack and then opening a browser feature that used the compromised translation. This vulnerability affects Firefox ESR < 60.8, Firefox < 68, and Thunderbird < 60.8.
Related Resources (19)
http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00011.html
https://www.mozilla.org/security/advisories/mfsa2019-21/
https://security-tracker.debian.org/tracker/CVE-2019-9811
https://www.mozilla.org/security/advisories/mfsa2019-23/
http://lists.opensuse.org/opensuse-security-announce/2019-08/msg00073.html
https://bugzilla.mozilla.org/show_bug.cgi?id=1538007
https://bugzilla.mozilla.org/show_bug.cgi?id=1539598
http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00017.html
https://security.gentoo.org/glsa/201908-12
https://security.alpinelinux.org/vuln/CVE-2019-9811
https://security.gentoo.org/glsa/201908-20
http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00055.html
https://bugzilla.mozilla.org/show_bug.cgi?id=1563327
https://www.mozilla.org/security/advisories/mfsa2019-22/
https://lists.debian.org/debian-lts-announce/2019/08/msg00001.html
https://access.redhat.com/security/cve/CVE-2019-9811
https://people.canonical.com/~ubuntu-security/cve/CVE-2019-9811
http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00058.html
https://lists.debian.org/debian-lts-announce/2019/08/msg00002.html
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CVSS v4
Base Score:
9
Attack Vector
NETWORK
Attack Complexity
HIGH
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
PASSIVE
Vulnerable System Confidentiality
HIGH
Vulnerable System Integrity
HIGH
Vulnerable System Availability
HIGH
Subsequent System Confidentiality
HIGH
Subsequent System Integrity
HIGH
Subsequent System Availability
HIGH
CVSS v3
Base Score:
8.3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
CVSS v2
Base Score:
5.1
Access Vector
NETWORK
Access Complexity
HIGH
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
Weakness Type (CWE)
Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')
CWE-74
EPSS
Base Score:
0.68