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Vulnerability details: VCID-47xg-s8mr-p3d4
Vulnerability ID VCID-47xg-s8mr-p3d4
Aliases CVE-2018-5188
Summary Mozilla developers and community members Alex Gaynor, Christoph Diehl, Christian Holler, Jason Kratzer, David Major, Jon Coppeard, Nicolas B. Pierron, Jason Kratzer, Marcia Knous, and Ronald Crane reported memory safety bugs present in Firefox 60, Firefox ESR 60, Firefox ESR 52.8, and Thunderbird 52.8. 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-2018-5188.json
epss 0.01647 https://api.first.org/data/v1/epss?cve=CVE-2018-5188
epss 0.01647 https://api.first.org/data/v1/epss?cve=CVE-2018-5188
epss 0.01647 https://api.first.org/data/v1/epss?cve=CVE-2018-5188
epss 0.01647 https://api.first.org/data/v1/epss?cve=CVE-2018-5188
epss 0.01647 https://api.first.org/data/v1/epss?cve=CVE-2018-5188
epss 0.01647 https://api.first.org/data/v1/epss?cve=CVE-2018-5188
epss 0.01647 https://api.first.org/data/v1/epss?cve=CVE-2018-5188
epss 0.01647 https://api.first.org/data/v1/epss?cve=CVE-2018-5188
epss 0.01647 https://api.first.org/data/v1/epss?cve=CVE-2018-5188
epss 0.01647 https://api.first.org/data/v1/epss?cve=CVE-2018-5188
epss 0.01647 https://api.first.org/data/v1/epss?cve=CVE-2018-5188
epss 0.01647 https://api.first.org/data/v1/epss?cve=CVE-2018-5188
epss 0.01678 https://api.first.org/data/v1/epss?cve=CVE-2018-5188
epss 0.01678 https://api.first.org/data/v1/epss?cve=CVE-2018-5188
epss 0.01678 https://api.first.org/data/v1/epss?cve=CVE-2018-5188
epss 0.01678 https://api.first.org/data/v1/epss?cve=CVE-2018-5188
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-2018-5188
cvssv3 9.8 https://nvd.nist.gov/vuln/detail/CVE-2018-5188
archlinux Critical https://security.archlinux.org/AVG-727
archlinux Critical https://security.archlinux.org/AVG-728
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/mfsa2018-17
generic_textual critical https://www.mozilla.org/en-US/security/advisories/mfsa2018-18
generic_textual critical https://www.mozilla.org/en-US/security/advisories/mfsa2018-19
Reference id Reference type URL
https://access.redhat.com/errata/RHSA-2018:2112
https://access.redhat.com/errata/RHSA-2018:2113
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2018-5188.json
https://api.first.org/data/v1/epss?cve=CVE-2018-5188
https://bugzilla.mozilla.org/buglist.cgi?bug_id=1456189%2C1456975%2C1465898%2C1392739%2C1451297%2C1464063%2C1437842%2C1442722%2C1452576%2C1450688%2C1458264%2C1458270%2C1465108%2C1464829%2C1464079%2C1463494%2C1458048
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-12359
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-12360
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-12362
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-12363
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-12364
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-12365
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-12366
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-12372
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-12373
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-12374
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-5156
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-5188
https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
https://lists.debian.org/debian-lts-announce/2018/06/msg00014.html
https://lists.debian.org/debian-lts-announce/2018/07/msg00013.html
https://security.gentoo.org/glsa/201810-01
https://security.gentoo.org/glsa/201811-13
https://www.debian.org/security/2018/dsa-4244
https://www.mozilla.org/security/advisories/mfsa2018-15/
https://www.mozilla.org/security/advisories/mfsa2018-16/
https://www.mozilla.org/security/advisories/mfsa2018-17/
https://www.mozilla.org/security/advisories/mfsa2018-18/
https://www.mozilla.org/security/advisories/mfsa2018-19/
http://www.securityfocus.com/bid/104555
1595040 https://bugzilla.redhat.com/show_bug.cgi?id=1595040
ASA-201806-14 https://security.archlinux.org/ASA-201806-14
ASA-201807-4 https://security.archlinux.org/ASA-201807-4
AVG-727 https://security.archlinux.org/AVG-727
AVG-728 https://security.archlinux.org/AVG-728
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:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_desktop:6.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:redhat:enterprise_linux_desktop:6.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_server:6.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:redhat:enterprise_linux_server:6.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_server:7.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:redhat:enterprise_linux_server:7.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_server_aus:7.6:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:redhat:enterprise_linux_server_aus:7.6:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_server_eus:7.5:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:redhat:enterprise_linux_server_eus:7.5:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_server_eus:7.6:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:redhat:enterprise_linux_server_eus:7.6:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_server_tus:7.6:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:redhat:enterprise_linux_server_tus:7.6:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_workstation:6.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:redhat:enterprise_linux_workstation:6.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:*:*
CVE-2018-5188 https://nvd.nist.gov/vuln/detail/CVE-2018-5188
mfsa2018-15 https://www.mozilla.org/en-US/security/advisories/mfsa2018-15
mfsa2018-16 https://www.mozilla.org/en-US/security/advisories/mfsa2018-16
mfsa2018-17 https://www.mozilla.org/en-US/security/advisories/mfsa2018-17
mfsa2018-18 https://www.mozilla.org/en-US/security/advisories/mfsa2018-18
mfsa2018-19 https://www.mozilla.org/en-US/security/advisories/mfsa2018-19
RHSA-2018:2251 https://access.redhat.com/errata/RHSA-2018:2251
RHSA-2018:2252 https://access.redhat.com/errata/RHSA-2018:2252
USN-3705-1 https://usn.ubuntu.com/3705-1/
USN-3714-1 https://usn.ubuntu.com/3714-1/
USN-3749-1 https://usn.ubuntu.com/3749-1/
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-2018-5188.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-2018-5188
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-2018-5188
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 0.81315
EPSS Score 0.01647
Published At Aug. 3, 2025, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2025-07-31T08:09:51.746097+00:00 Mozilla Importer Import https://github.com/mozilla/foundation-security-advisories/blob/master/announce/2018/mfsa2018-18.yml 37.0.0