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Vulnerability details: VCID-rff5-96dg-qqgp
Vulnerability ID VCID-rff5-96dg-qqgp
Aliases CVE-2017-5426
Summary On Linux, if the secure computing mode BPF (seccomp-bpf) filter is running when the Gecko Media Plugin sandbox is started, the sandbox fails to be applied and items that would run within the sandbox are run protected only by the running filter which is typically weak compared to the sandbox. *Note: this issue only affects Linux. Other operating systems are not affected.*
Status Published
Exploitability 0.5
Weighted Severity 9.0
Risk 4.5
Affected and Fixed Packages Package Details
Weaknesses (1)
CWE-732 Incorrect Permission Assignment for Critical Resource
System Score Found at
epss 0.00304 https://api.first.org/data/v1/epss?cve=CVE-2017-5426
epss 0.00304 https://api.first.org/data/v1/epss?cve=CVE-2017-5426
epss 0.00304 https://api.first.org/data/v1/epss?cve=CVE-2017-5426
epss 0.00304 https://api.first.org/data/v1/epss?cve=CVE-2017-5426
epss 0.00304 https://api.first.org/data/v1/epss?cve=CVE-2017-5426
epss 0.00304 https://api.first.org/data/v1/epss?cve=CVE-2017-5426
epss 0.00304 https://api.first.org/data/v1/epss?cve=CVE-2017-5426
epss 0.00304 https://api.first.org/data/v1/epss?cve=CVE-2017-5426
epss 0.00304 https://api.first.org/data/v1/epss?cve=CVE-2017-5426
cvssv2 5.1 https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
cvssv2 5.0 https://nvd.nist.gov/vuln/detail/CVE-2017-5426
cvssv3 5.3 https://nvd.nist.gov/vuln/detail/CVE-2017-5426
archlinux Critical https://security.archlinux.org/AVG-194
generic_textual critical https://www.mozilla.org/en-US/security/advisories/mfsa2017-05
generic_textual critical https://www.mozilla.org/en-US/security/advisories/mfsa2017-09
Reference id Reference type URL
https://api.first.org/data/v1/epss?cve=CVE-2017-5426
https://bugzilla.mozilla.org/show_bug.cgi?id=1257361
https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
https://www.mozilla.org/security/advisories/mfsa2017-05/
https://www.mozilla.org/security/advisories/mfsa2017-09/
http://www.securityfocus.com/bid/96694
http://www.securitytracker.com/id/1037966
ASA-201703-3 https://security.archlinux.org/ASA-201703-3
AVG-194 https://security.archlinux.org/AVG-194
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:thunderbird:*:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*
CVE-2017-5426 https://nvd.nist.gov/vuln/detail/CVE-2017-5426
mfsa2017-05 https://www.mozilla.org/en-US/security/advisories/mfsa2017-05
mfsa2017-09 https://www.mozilla.org/en-US/security/advisories/mfsa2017-09
USN-3216-1 https://usn.ubuntu.com/3216-1/
No exploits are available.
Vector: AV:N/AC:H/Au:N/C:P/I:P/A:P Found at https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
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: AV:N/AC:L/Au:N/C:N/I:P/A:N Found at https://nvd.nist.gov/vuln/detail/CVE-2017-5426
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:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N Found at https://nvd.nist.gov/vuln/detail/CVE-2017-5426
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 0.53578
EPSS Score 0.00304
Published At April 1, 2026, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2026-04-01T13:16:41.614166+00:00 Mozilla Importer Import https://github.com/mozilla/foundation-security-advisories/blob/master/announce/2017/mfsa2017-05.yml 38.0.0