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Vulnerability details: VCID-by1g-8wvm-ffgt
Vulnerability ID VCID-by1g-8wvm-ffgt
Aliases CVE-2019-11721
Summary Multiple vulnerabilities have been found in Mozilla Firefox, the worst of which could result in the arbitrary execution of code.
Status Published
Exploitability 0.5
Weighted Severity 9.0
Risk 4.5
Affected and Fixed Packages Package Details
Weaknesses (1)
CWE-172 Encoding Error
System Score Found at
cvssv3 5.8 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2019-11721.json
epss 0.00572 https://api.first.org/data/v1/epss?cve=CVE-2019-11721
epss 0.00572 https://api.first.org/data/v1/epss?cve=CVE-2019-11721
epss 0.00572 https://api.first.org/data/v1/epss?cve=CVE-2019-11721
epss 0.00572 https://api.first.org/data/v1/epss?cve=CVE-2019-11721
epss 0.00572 https://api.first.org/data/v1/epss?cve=CVE-2019-11721
epss 0.00572 https://api.first.org/data/v1/epss?cve=CVE-2019-11721
epss 0.00572 https://api.first.org/data/v1/epss?cve=CVE-2019-11721
epss 0.00572 https://api.first.org/data/v1/epss?cve=CVE-2019-11721
epss 0.00572 https://api.first.org/data/v1/epss?cve=CVE-2019-11721
archlinux Critical https://security.archlinux.org/AVG-1002
generic_textual critical https://www.mozilla.org/en-US/security/advisories/mfsa2019-21
generic_textual critical https://www.mozilla.org/en-US/security/advisories/mfsa2019-28
Reference id Reference type URL
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2019-11721.json
https://api.first.org/data/v1/epss?cve=CVE-2019-11721
1730984 https://bugzilla.redhat.com/show_bug.cgi?id=1730984
ASA-201907-4 https://security.archlinux.org/ASA-201907-4
AVG-1002 https://security.archlinux.org/AVG-1002
GLSA-201908-12 https://security.gentoo.org/glsa/201908-12
mfsa2019-21 https://www.mozilla.org/en-US/security/advisories/mfsa2019-21
mfsa2019-28 https://www.mozilla.org/en-US/security/advisories/mfsa2019-28
USN-4054-1 https://usn.ubuntu.com/4054-1/
No exploits are available.
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:L Found at https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2019-11721.json
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Exploit Prediction Scoring System (EPSS)
Percentile 0.68594
EPSS Score 0.00572
Published At April 1, 2026, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2026-04-01T13:01:07.181021+00:00 Gentoo Importer Import https://security.gentoo.org/glsa/201908-12 38.0.0