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Vulnerability details: VCID-rz6b-kepf-cfg9
Vulnerability ID VCID-rz6b-kepf-cfg9
Aliases CVE-2016-5289
Summary Mozilla developers and community members Christian Holler, Andrew McCreight, Dan Minor, Tyson Smith, Jon Coppeard, Jan-Ivar Bruaroey, Jesse Ruderman, and Markus Stange reported memory safety bugs present in Firefox 49. Some of these bugs showed evidence of memory corruption and we presume that with enough effort that some of these could be exploited to run arbitrary code.
Status Published
Exploitability 0.5
Weighted Severity 9.0
Risk 4.5
Affected and Fixed Packages Package Details
Weaknesses (1)
CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer
System Score Found at
cvssv3 9.8 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2016-5289.json
epss 0.01811 https://api.first.org/data/v1/epss?cve=CVE-2016-5289
epss 0.01811 https://api.first.org/data/v1/epss?cve=CVE-2016-5289
epss 0.01811 https://api.first.org/data/v1/epss?cve=CVE-2016-5289
epss 0.01811 https://api.first.org/data/v1/epss?cve=CVE-2016-5289
epss 0.01811 https://api.first.org/data/v1/epss?cve=CVE-2016-5289
epss 0.01811 https://api.first.org/data/v1/epss?cve=CVE-2016-5289
epss 0.01811 https://api.first.org/data/v1/epss?cve=CVE-2016-5289
epss 0.01811 https://api.first.org/data/v1/epss?cve=CVE-2016-5289
epss 0.01811 https://api.first.org/data/v1/epss?cve=CVE-2016-5289
epss 0.01811 https://api.first.org/data/v1/epss?cve=CVE-2016-5289
cvssv2 6.8 https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
cvssv2 7.5 https://nvd.nist.gov/vuln/detail/CVE-2016-5289
cvssv3 9.8 https://nvd.nist.gov/vuln/detail/CVE-2016-5289
archlinux Critical https://security.archlinux.org/AVG-72
generic_textual critical https://www.mozilla.org/en-US/security/advisories/mfsa2016-89
Reference id Reference type URL
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2016-5289.json
https://api.first.org/data/v1/epss?cve=CVE-2016-5289
https://bugzilla.mozilla.org/buglist.cgi?bug_id=1296649%2C1298107%2C1300129%2C1305876%2C1314667%2C1301252%2C1277866%2C1307254%2C1252511%2C1264053
https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
https://www.mozilla.org/security/advisories/mfsa2016-89/
http://www.securityfocus.com/bid/94337
http://www.securitytracker.com/id/1037298
1395098 https://bugzilla.redhat.com/show_bug.cgi?id=1395098
ASA-201611-16 https://security.archlinux.org/ASA-201611-16
AVG-72 https://security.archlinux.org/AVG-72
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:*:*:*:*:*:*:*:*
CVE-2016-5289 https://nvd.nist.gov/vuln/detail/CVE-2016-5289
mfsa2016-89 https://www.mozilla.org/en-US/security/advisories/mfsa2016-89
USN-3124-1 https://usn.ubuntu.com/3124-1/
No exploits are available.
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Found at https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2016-5289.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: AV:N/AC:M/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:P/I:P/A:P Found at https://nvd.nist.gov/vuln/detail/CVE-2016-5289
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:H/I:H/A:H Found at https://nvd.nist.gov/vuln/detail/CVE-2016-5289
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 0.82765
EPSS Score 0.01811
Published At April 1, 2026, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2026-04-01T13:16:33.644600+00:00 Mozilla Importer Import https://github.com/mozilla/foundation-security-advisories/blob/master/announce/2016/mfsa2016-89.yml 38.0.0