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Vulnerability details: VCID-teh4-fmg6-53ab
Vulnerability ID VCID-teh4-fmg6-53ab
Aliases CVE-2021-30547
Summary Multiple vulnerabilities have been found in Mozilla Thunderbird, the worst of which could result in the arbitrary execution of code.
Status Published
Exploitability 0.5
Weighted Severity 9.0
Risk 4.5
Affected and Fixed Packages Package Details
Weaknesses (0)
There are no known CWE.
System Score Found at
cvssv3 8.8 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2021-30547.json
epss 0.02527 https://api.first.org/data/v1/epss?cve=CVE-2021-30547
epss 0.02527 https://api.first.org/data/v1/epss?cve=CVE-2021-30547
epss 0.02527 https://api.first.org/data/v1/epss?cve=CVE-2021-30547
epss 0.02527 https://api.first.org/data/v1/epss?cve=CVE-2021-30547
epss 0.02527 https://api.first.org/data/v1/epss?cve=CVE-2021-30547
epss 0.02527 https://api.first.org/data/v1/epss?cve=CVE-2021-30547
epss 0.02527 https://api.first.org/data/v1/epss?cve=CVE-2021-30547
epss 0.02527 https://api.first.org/data/v1/epss?cve=CVE-2021-30547
epss 0.02527 https://api.first.org/data/v1/epss?cve=CVE-2021-30547
cvssv3.1 8.8 https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
archlinux Critical https://security.archlinux.org/AVG-2057
archlinux Critical https://security.archlinux.org/AVG-2058
archlinux High https://security.archlinux.org/AVG-2148
archlinux High https://security.archlinux.org/AVG-2152
generic_textual high https://www.mozilla.org/en-US/security/advisories/mfsa2021-28
generic_textual high https://www.mozilla.org/en-US/security/advisories/mfsa2021-29
generic_textual high https://www.mozilla.org/en-US/security/advisories/mfsa2021-30
Reference id Reference type URL
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2021-30547.json
https://api.first.org/data/v1/epss?cve=CVE-2021-30547
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-29969
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-29970
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-29976
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-30547
https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
1970109 https://bugzilla.redhat.com/show_bug.cgi?id=1970109
990079 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=990079
ASA-202106-31 https://security.archlinux.org/ASA-202106-31
ASA-202106-32 https://security.archlinux.org/ASA-202106-32
ASA-202107-20 https://security.archlinux.org/ASA-202107-20
ASA-202107-21 https://security.archlinux.org/ASA-202107-21
AVG-2057 https://security.archlinux.org/AVG-2057
AVG-2058 https://security.archlinux.org/AVG-2058
AVG-2148 https://security.archlinux.org/AVG-2148
AVG-2152 https://security.archlinux.org/AVG-2152
GLSA-202202-03 https://security.gentoo.org/glsa/202202-03
GLSA-202208-14 https://security.gentoo.org/glsa/202208-14
mfsa2021-28 https://www.mozilla.org/en-US/security/advisories/mfsa2021-28
mfsa2021-29 https://www.mozilla.org/en-US/security/advisories/mfsa2021-29
mfsa2021-30 https://www.mozilla.org/en-US/security/advisories/mfsa2021-30
RHSA-2021:2740 https://access.redhat.com/errata/RHSA-2021:2740
RHSA-2021:2741 https://access.redhat.com/errata/RHSA-2021:2741
RHSA-2021:2742 https://access.redhat.com/errata/RHSA-2021:2742
RHSA-2021:2743 https://access.redhat.com/errata/RHSA-2021:2743
RHSA-2021:2881 https://access.redhat.com/errata/RHSA-2021:2881
RHSA-2021:2882 https://access.redhat.com/errata/RHSA-2021:2882
RHSA-2021:2883 https://access.redhat.com/errata/RHSA-2021:2883
RHSA-2021:2914 https://access.redhat.com/errata/RHSA-2021:2914
USN-5011-1 https://usn.ubuntu.com/5011-1/
USN-5058-1 https://usn.ubuntu.com/5058-1/
No exploits are available.
Vector: CVSS:3.1/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-2021-30547.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:3.1/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
Exploit Prediction Scoring System (EPSS)
Percentile 0.85358
EPSS Score 0.02527
Published At April 1, 2026, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2026-04-01T12:58:34.021630+00:00 Gentoo Importer Import https://security.gentoo.org/glsa/202208-14 38.0.0