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Vulnerability details: VCID-t859-v4b5-87ab
Vulnerability ID VCID-t859-v4b5-87ab
Aliases CVE-2018-12405
Summary Mozilla developers and community members Christian Holler, Diego Calleja, Andrew McCreight, Jon Coppeard, Jed Davis, Natalia Csoregi, Nicolas B. Pierron, and Tyson Smith reported memory safety bugs present in Firefox 63 and Firefox ESR 60.3. 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-119 Improper Restriction of Operations within the Bounds of a Memory Buffer
CWE-120 Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
System Score Found at
cvssv3 9.8 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2018-12405.json
epss 0.02778 https://api.first.org/data/v1/epss?cve=CVE-2018-12405
epss 0.02778 https://api.first.org/data/v1/epss?cve=CVE-2018-12405
epss 0.02778 https://api.first.org/data/v1/epss?cve=CVE-2018-12405
epss 0.02778 https://api.first.org/data/v1/epss?cve=CVE-2018-12405
epss 0.02778 https://api.first.org/data/v1/epss?cve=CVE-2018-12405
epss 0.02778 https://api.first.org/data/v1/epss?cve=CVE-2018-12405
epss 0.02778 https://api.first.org/data/v1/epss?cve=CVE-2018-12405
epss 0.02778 https://api.first.org/data/v1/epss?cve=CVE-2018-12405
epss 0.02778 https://api.first.org/data/v1/epss?cve=CVE-2018-12405
epss 0.02778 https://api.first.org/data/v1/epss?cve=CVE-2018-12405
epss 0.02778 https://api.first.org/data/v1/epss?cve=CVE-2018-12405
epss 0.02778 https://api.first.org/data/v1/epss?cve=CVE-2018-12405
epss 0.02778 https://api.first.org/data/v1/epss?cve=CVE-2018-12405
epss 0.02778 https://api.first.org/data/v1/epss?cve=CVE-2018-12405
epss 0.02778 https://api.first.org/data/v1/epss?cve=CVE-2018-12405
epss 0.02778 https://api.first.org/data/v1/epss?cve=CVE-2018-12405
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-2018-12405
cvssv3 9.8 https://nvd.nist.gov/vuln/detail/CVE-2018-12405
archlinux Critical https://security.archlinux.org/AVG-833
generic_textual critical https://www.mozilla.org/en-US/security/advisories/mfsa2018-29
generic_textual critical https://www.mozilla.org/en-US/security/advisories/mfsa2018-30
generic_textual critical https://www.mozilla.org/en-US/security/advisories/mfsa2018-31
Reference id Reference type URL
https://access.redhat.com/errata/RHSA-2018:3831
https://access.redhat.com/errata/RHSA-2018:3833
https://access.redhat.com/errata/RHSA-2019:0159
https://access.redhat.com/errata/RHSA-2019:0160
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2018-12405.json
https://api.first.org/data/v1/epss?cve=CVE-2018-12405
https://bugzilla.mozilla.org/buglist.cgi?bug_id=1494752%2C1498765%2C1503326%2C1505181%2C1500759%2C1504365%2C1506640%2C1503082%2C1502013%2C1510471
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-12405
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-17466
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-18492
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-18493
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-18494
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-18498
https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
https://lists.debian.org/debian-lts-announce/2018/12/msg00002.html
https://security.gentoo.org/glsa/201903-04
https://www.debian.org/security/2018/dsa-4354
https://www.debian.org/security/2019/dsa-4362
https://www.mozilla.org/security/advisories/mfsa2018-29/
https://www.mozilla.org/security/advisories/mfsa2018-30/
https://www.mozilla.org/security/advisories/mfsa2018-31/
http://www.securityfocus.com/bid/106168
1658397 https://bugzilla.redhat.com/show_bug.cgi?id=1658397
ASA-201812-9 https://security.archlinux.org/ASA-201812-9
AVG-833 https://security.archlinux.org/AVG-833
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: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:canonical:ubuntu_linux:18.10:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:canonical:ubuntu_linux:18.10:*:*:*:*:*:*:*
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:7.6:*:*:*:*:*:*:* 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-2018-12405 https://nvd.nist.gov/vuln/detail/CVE-2018-12405
mfsa2018-29 https://www.mozilla.org/en-US/security/advisories/mfsa2018-29
mfsa2018-30 https://www.mozilla.org/en-US/security/advisories/mfsa2018-30
mfsa2018-31 https://www.mozilla.org/en-US/security/advisories/mfsa2018-31
USN-3844-1 https://usn.ubuntu.com/3844-1/
USN-3868-1 https://usn.ubuntu.com/3868-1/
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-2018-12405.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-2018-12405
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-2018-12405
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 0.85492
EPSS Score 0.02778
Published At July 30, 2025, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2025-07-31T08:09:51.316881+00:00 Mozilla Importer Import https://github.com/mozilla/foundation-security-advisories/blob/master/announce/2018/mfsa2018-30.yml 37.0.0