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Vulnerability details: VCID-msqn-51g5-hqa6
Vulnerability ID VCID-msqn-51g5-hqa6
Aliases CVE-2019-11748
Summary WebRTC in Firefox will honor persisted permissions given to sites for access to microphone and camera resources even when in a third-party context. In light of recent high profile vulnerabilities in other software, a decision was made to no longer persist these permissions. This avoids the possibility of trusted WebRTC resources being invisibly embedded in web content and abusing permissions previously given by users. Users will now be prompted for permissions on each use.
Status Published
Exploitability 0.5
Weighted Severity 9.0
Risk 4.5
Affected and Fixed Packages Package Details
Weaknesses (2)
CWE-732 Incorrect Permission Assignment for Critical Resource
CWE-281 Improper Preservation of Permissions
System Score Found at
cvssv3 6.1 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2019-11748.json
epss 0.003 https://api.first.org/data/v1/epss?cve=CVE-2019-11748
epss 0.003 https://api.first.org/data/v1/epss?cve=CVE-2019-11748
epss 0.003 https://api.first.org/data/v1/epss?cve=CVE-2019-11748
epss 0.003 https://api.first.org/data/v1/epss?cve=CVE-2019-11748
epss 0.003 https://api.first.org/data/v1/epss?cve=CVE-2019-11748
epss 0.003 https://api.first.org/data/v1/epss?cve=CVE-2019-11748
epss 0.003 https://api.first.org/data/v1/epss?cve=CVE-2019-11748
epss 0.003 https://api.first.org/data/v1/epss?cve=CVE-2019-11748
epss 0.003 https://api.first.org/data/v1/epss?cve=CVE-2019-11748
epss 0.003 https://api.first.org/data/v1/epss?cve=CVE-2019-11748
epss 0.003 https://api.first.org/data/v1/epss?cve=CVE-2019-11748
epss 0.003 https://api.first.org/data/v1/epss?cve=CVE-2019-11748
epss 0.003 https://api.first.org/data/v1/epss?cve=CVE-2019-11748
epss 0.003 https://api.first.org/data/v1/epss?cve=CVE-2019-11748
epss 0.003 https://api.first.org/data/v1/epss?cve=CVE-2019-11748
epss 0.003 https://api.first.org/data/v1/epss?cve=CVE-2019-11748
epss 0.003 https://api.first.org/data/v1/epss?cve=CVE-2019-11748
cvssv3.1 6.1 https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
cvssv2 4.3 https://nvd.nist.gov/vuln/detail/CVE-2019-11748
cvssv3.1 6.5 https://nvd.nist.gov/vuln/detail/CVE-2019-11748
archlinux High https://security.archlinux.org/AVG-1036
generic_textual critical https://www.mozilla.org/en-US/security/advisories/mfsa2019-25
generic_textual critical https://www.mozilla.org/en-US/security/advisories/mfsa2019-26
Reference id Reference type URL
http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00011.html
http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00017.html
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2019-11748.json
https://api.first.org/data/v1/epss?cve=CVE-2019-11748
https://bugzilla.mozilla.org/show_bug.cgi?id=1564588
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-11748
https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
https://www.mozilla.org/security/advisories/mfsa2019-25/
https://www.mozilla.org/security/advisories/mfsa2019-26/
1748665 https://bugzilla.redhat.com/show_bug.cgi?id=1748665
ASA-201909-2 https://security.archlinux.org/ASA-201909-2
AVG-1036 https://security.archlinux.org/AVG-1036
cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:*
CVE-2019-11748 https://nvd.nist.gov/vuln/detail/CVE-2019-11748
mfsa2019-25 https://www.mozilla.org/en-US/security/advisories/mfsa2019-25
mfsa2019-26 https://www.mozilla.org/en-US/security/advisories/mfsa2019-26
RHSA-2019:2663 https://access.redhat.com/errata/RHSA-2019:2663
USN-4122-1 https://usn.ubuntu.com/4122-1/
No exploits are available.
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N Found at https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2019-11748.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
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N Found at https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
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
Vector: AV:N/AC:M/Au:N/C:P/I:N/A:N Found at https://nvd.nist.gov/vuln/detail/CVE-2019-11748
Exploitability (E) Access Vector (AV) Access Complexity (AC) Authentication (Au) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

high

functional

unproven

proof_of_concept

not_defined

local

adjacent_network

network

high

medium

low

multiple

single

none

none

partial

complete

none

partial

complete

none

partial

complete
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N Found at https://nvd.nist.gov/vuln/detail/CVE-2019-11748
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 0.52883
EPSS Score 0.003
Published At July 30, 2025, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2025-07-31T08:09:59.395681+00:00 Mozilla Importer Import https://github.com/mozilla/foundation-security-advisories/blob/master/announce/2019/mfsa2019-26.yml 37.0.0