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Vulnerability details: VCID-vur4-4g13-byfu
Vulnerability ID VCID-vur4-4g13-byfu
Aliases CVE-2019-11749
Summary A vulnerability exists in WebRTC where malicious web content can use probing techniques on the getUserMedia API using constraints to reveal device properties of cameras on the system without triggering a user prompt or notification. This allows for the potential fingerprinting of users.
Status Published
Exploitability 0.5
Weighted Severity 9.0
Risk 4.5
Affected and Fixed Packages Package Details
Weaknesses (1)
CWE-200 Exposure of Sensitive Information to an Unauthorized Actor
System Score Found at
cvssv3 4.3 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2019-11749.json
epss 0.00369 https://api.first.org/data/v1/epss?cve=CVE-2019-11749
epss 0.00369 https://api.first.org/data/v1/epss?cve=CVE-2019-11749
epss 0.00369 https://api.first.org/data/v1/epss?cve=CVE-2019-11749
epss 0.00369 https://api.first.org/data/v1/epss?cve=CVE-2019-11749
epss 0.00369 https://api.first.org/data/v1/epss?cve=CVE-2019-11749
epss 0.00369 https://api.first.org/data/v1/epss?cve=CVE-2019-11749
epss 0.00369 https://api.first.org/data/v1/epss?cve=CVE-2019-11749
epss 0.00369 https://api.first.org/data/v1/epss?cve=CVE-2019-11749
epss 0.00369 https://api.first.org/data/v1/epss?cve=CVE-2019-11749
epss 0.00369 https://api.first.org/data/v1/epss?cve=CVE-2019-11749
epss 0.00369 https://api.first.org/data/v1/epss?cve=CVE-2019-11749
epss 0.00369 https://api.first.org/data/v1/epss?cve=CVE-2019-11749
epss 0.00369 https://api.first.org/data/v1/epss?cve=CVE-2019-11749
epss 0.00369 https://api.first.org/data/v1/epss?cve=CVE-2019-11749
epss 0.00369 https://api.first.org/data/v1/epss?cve=CVE-2019-11749
epss 0.00369 https://api.first.org/data/v1/epss?cve=CVE-2019-11749
epss 0.00369 https://api.first.org/data/v1/epss?cve=CVE-2019-11749
epss 0.00369 https://api.first.org/data/v1/epss?cve=CVE-2019-11749
epss 0.00369 https://api.first.org/data/v1/epss?cve=CVE-2019-11749
epss 0.00369 https://api.first.org/data/v1/epss?cve=CVE-2019-11749
epss 0.00369 https://api.first.org/data/v1/epss?cve=CVE-2019-11749
epss 0.00369 https://api.first.org/data/v1/epss?cve=CVE-2019-11749
epss 0.00369 https://api.first.org/data/v1/epss?cve=CVE-2019-11749
epss 0.00369 https://api.first.org/data/v1/epss?cve=CVE-2019-11749
epss 0.00369 https://api.first.org/data/v1/epss?cve=CVE-2019-11749
epss 0.00369 https://api.first.org/data/v1/epss?cve=CVE-2019-11749
cvssv3.1 4.3 https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
cvssv2 4.3 https://nvd.nist.gov/vuln/detail/CVE-2019-11749
cvssv3.1 4.3 https://nvd.nist.gov/vuln/detail/CVE-2019-11749
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-2019-11749.json
https://api.first.org/data/v1/epss?cve=CVE-2019-11749
https://bugzilla.mozilla.org/show_bug.cgi?id=1565374
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-11749
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/
1748666 https://bugzilla.redhat.com/show_bug.cgi?id=1748666
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-2019-11749 https://nvd.nist.gov/vuln/detail/CVE-2019-11749
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:U/C:L/I:N/A:N Found at https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2019-11749.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:U/C:L/I:N/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-2019-11749
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:L/I:N/A:N Found at https://nvd.nist.gov/vuln/detail/CVE-2019-11749
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 0.58011
EPSS Score 0.00369
Published At Aug. 5, 2025, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2025-07-31T08:09:59.416169+00:00 Mozilla Importer Import https://github.com/mozilla/foundation-security-advisories/blob/master/announce/2019/mfsa2019-26.yml 37.0.0