Staging Environment: Content and features may be unstable or change without notice.
Search for vulnerabilities
Vulnerability details: VCID-fdue-dg92-13cp
Vulnerability ID VCID-fdue-dg92-13cp
Aliases CVE-2018-5146
Summary Multiple vulnerabilities have been found in Mozilla Thunderbird, the worst of which could lead to the execution of arbitrary code.
Status Published
Exploitability 0.5
Weighted Severity 9.0
Risk 4.5
Affected and Fixed Packages Package Details
Weaknesses (2)
CWE-122 Heap-based Buffer Overflow
CWE-787 Out-of-bounds Write
System Score Found at
cvssv3 8.8 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2018-5146.json
epss 0.41108 https://api.first.org/data/v1/epss?cve=CVE-2018-5146
epss 0.41108 https://api.first.org/data/v1/epss?cve=CVE-2018-5146
epss 0.41108 https://api.first.org/data/v1/epss?cve=CVE-2018-5146
epss 0.41108 https://api.first.org/data/v1/epss?cve=CVE-2018-5146
epss 0.41108 https://api.first.org/data/v1/epss?cve=CVE-2018-5146
epss 0.41108 https://api.first.org/data/v1/epss?cve=CVE-2018-5146
epss 0.41108 https://api.first.org/data/v1/epss?cve=CVE-2018-5146
epss 0.44797 https://api.first.org/data/v1/epss?cve=CVE-2018-5146
cvssv3 8.8 https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
cvssv2 6.8 https://nvd.nist.gov/vuln/detail/CVE-2018-5146
cvssv3 8.8 https://nvd.nist.gov/vuln/detail/CVE-2018-5146
archlinux Critical https://security.archlinux.org/AVG-367
archlinux Critical https://security.archlinux.org/AVG-657
archlinux Critical https://security.archlinux.org/AVG-658
archlinux Critical https://security.archlinux.org/AVG-663
generic_textual critical https://www.mozilla.org/en-US/security/advisories/mfsa2018-08
generic_textual critical https://www.mozilla.org/en-US/security/advisories/mfsa2018-09
Reference id Reference type URL
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2018-5146.json
https://api.first.org/data/v1/epss?cve=CVE-2018-5146
https://bugzilla.mozilla.org/show_bug.cgi?id=1446062
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-5125
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-5127
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-5129
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-5144
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-5145
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-5146
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-5147
https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
https://lists.debian.org/debian-lts-announce/2018/03/msg00022.html
https://lists.debian.org/debian-lts-announce/2018/03/msg00029.html
https://lists.debian.org/debian-lts-announce/2018/04/msg00033.html
https://www.debian.org/security/2018/dsa-4140
https://www.debian.org/security/2018/dsa-4143
https://www.debian.org/security/2018/dsa-4155
https://www.mozilla.org/security/advisories/mfsa2018-08/
https://www.mozilla.org/security/advisories/mfsa2018-09/
http://www.securityfocus.com/bid/103432
http://www.securitytracker.com/id/1040544
1557221 https://bugzilla.redhat.com/show_bug.cgi?id=1557221
893130 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=893130
ASA-201803-12 https://security.archlinux.org/ASA-201803-12
ASA-201803-13 https://security.archlinux.org/ASA-201803-13
ASA-201803-21 https://security.archlinux.org/ASA-201803-21
ASA-201803-22 https://security.archlinux.org/ASA-201803-22
AVG-367 https://security.archlinux.org/AVG-367
AVG-657 https://security.archlinux.org/AVG-657
AVG-658 https://security.archlinux.org/AVG-658
AVG-663 https://security.archlinux.org/AVG-663
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: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:debian:debian_linux:7.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:*
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:7.4:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:redhat:enterprise_linux_server_aus:7.4:*:*:*:*:*:*:*
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:7.4:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:redhat:enterprise_linux_server_eus:7.4:*:*:*:*:*:*:*
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:7.4:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:redhat:enterprise_linux_server_tus:7.4:*:*:*:*:*:*:*
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-2018-5146 https://nvd.nist.gov/vuln/detail/CVE-2018-5146
GLSA-201811-13 https://security.gentoo.org/glsa/201811-13
mfsa2018-08 https://www.mozilla.org/en-US/security/advisories/mfsa2018-08
mfsa2018-09 https://www.mozilla.org/en-US/security/advisories/mfsa2018-09
RHSA-2018:0549 https://access.redhat.com/errata/RHSA-2018:0549
RHSA-2018:0647 https://access.redhat.com/errata/RHSA-2018:0647
RHSA-2018:0648 https://access.redhat.com/errata/RHSA-2018:0648
RHSA-2018:0649 https://access.redhat.com/errata/RHSA-2018:0649
RHSA-2018:1058 https://access.redhat.com/errata/RHSA-2018:1058
USN-3545-1 https://usn.ubuntu.com/3545-1/
USN-3599-1 https://usn.ubuntu.com/3599-1/
USN-3604-1 https://usn.ubuntu.com/3604-1/
No exploits are available.
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H Found at https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2018-5146.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:M/Au:N/C:P/I:P/A:P Found at https://nvd.nist.gov/vuln/detail/CVE-2018-5146
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:R/S:U/C:H/I:H/A:H Found at https://nvd.nist.gov/vuln/detail/CVE-2018-5146
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 0.97361
EPSS Score 0.41108
Published At April 1, 2026, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2026-04-01T13:14:31.373528+00:00 Gentoo Importer Import https://security.gentoo.org/glsa/201811-13 38.0.0