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Vulnerability details: VCID-8kkp-b6ve-4ya2
Vulnerability ID VCID-8kkp-b6ve-4ya2
Aliases CVE-2018-5187
Summary Mozilla developers and community members Christian Holler, Sebastian Hengst, Nils Ohlmeier, Jon Coppeard, Randell Jesup, Ted Campbell, Gary Kwong, and Jean-Yves Avenard reported memory safety bugs present in Firefox 60 and Firefox ESR 60. 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 (2)
CWE-120 Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
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-2018-5187.json
epss 0.03688 https://api.first.org/data/v1/epss?cve=CVE-2018-5187
epss 0.03688 https://api.first.org/data/v1/epss?cve=CVE-2018-5187
epss 0.03688 https://api.first.org/data/v1/epss?cve=CVE-2018-5187
epss 0.03688 https://api.first.org/data/v1/epss?cve=CVE-2018-5187
epss 0.03688 https://api.first.org/data/v1/epss?cve=CVE-2018-5187
epss 0.03688 https://api.first.org/data/v1/epss?cve=CVE-2018-5187
epss 0.03688 https://api.first.org/data/v1/epss?cve=CVE-2018-5187
epss 0.03688 https://api.first.org/data/v1/epss?cve=CVE-2018-5187
epss 0.03688 https://api.first.org/data/v1/epss?cve=CVE-2018-5187
epss 0.03688 https://api.first.org/data/v1/epss?cve=CVE-2018-5187
epss 0.03688 https://api.first.org/data/v1/epss?cve=CVE-2018-5187
epss 0.03688 https://api.first.org/data/v1/epss?cve=CVE-2018-5187
epss 0.03688 https://api.first.org/data/v1/epss?cve=CVE-2018-5187
epss 0.03757 https://api.first.org/data/v1/epss?cve=CVE-2018-5187
epss 0.03757 https://api.first.org/data/v1/epss?cve=CVE-2018-5187
epss 0.03757 https://api.first.org/data/v1/epss?cve=CVE-2018-5187
epss 0.03757 https://api.first.org/data/v1/epss?cve=CVE-2018-5187
cvssv3 8.8 https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
cvssv2 7.5 https://nvd.nist.gov/vuln/detail/CVE-2018-5187
cvssv3 9.8 https://nvd.nist.gov/vuln/detail/CVE-2018-5187
archlinux Critical https://security.archlinux.org/AVG-727
archlinux Critical https://security.archlinux.org/AVG-751
generic_textual critical https://www.mozilla.org/en-US/security/advisories/mfsa2018-15
generic_textual critical https://www.mozilla.org/en-US/security/advisories/mfsa2018-16
generic_textual critical https://www.mozilla.org/en-US/security/advisories/mfsa2018-19
Reference id Reference type URL
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2018-5187.json
https://api.first.org/data/v1/epss?cve=CVE-2018-5187
https://bugzilla.mozilla.org/buglist.cgi?bug_id=1461324%2C1414829%2C1395246%2C1467938%2C1461619%2C1425930%2C1438556%2C1454285%2C1459568%2C1463884
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-12361
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-12367
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-12371
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-5156
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-5187
https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
https://lists.debian.org/debian-lts-announce/2018/11/msg00011.html
https://security.gentoo.org/glsa/201810-01
https://security.gentoo.org/glsa/201811-13
https://www.debian.org/security/2018/dsa-4295
https://www.mozilla.org/security/advisories/mfsa2018-15/
https://www.mozilla.org/security/advisories/mfsa2018-16/
https://www.mozilla.org/security/advisories/mfsa2018-19/
http://www.securityfocus.com/bid/104556
1595039 https://bugzilla.redhat.com/show_bug.cgi?id=1595039
ASA-201806-14 https://security.archlinux.org/ASA-201806-14
ASA-201808-8 https://security.archlinux.org/ASA-201808-8
AVG-727 https://security.archlinux.org/AVG-727
AVG-751 https://security.archlinux.org/AVG-751
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:*:*:*:*:*:*:*:*
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:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:17.10:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:canonical:ubuntu_linux:17.10:*:*:*:*:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
CVE-2018-5187 https://nvd.nist.gov/vuln/detail/CVE-2018-5187
mfsa2018-15 https://www.mozilla.org/en-US/security/advisories/mfsa2018-15
mfsa2018-16 https://www.mozilla.org/en-US/security/advisories/mfsa2018-16
mfsa2018-19 https://www.mozilla.org/en-US/security/advisories/mfsa2018-19
USN-3705-1 https://usn.ubuntu.com/3705-1/
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-2018-5187.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:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H 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:L/Au:N/C:P/I:P/A:P Found at https://nvd.nist.gov/vuln/detail/CVE-2018-5187
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-2018-5187
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 0.87566
EPSS Score 0.03688
Published At Aug. 3, 2025, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2025-07-31T08:09:51.977826+00:00 Mozilla Importer Import https://github.com/mozilla/foundation-security-advisories/blob/master/announce/2018/mfsa2018-19.yml 37.0.0