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Vulnerability details: VCID-svmj-8kuu-rfcn
Vulnerability ID VCID-svmj-8kuu-rfcn
Aliases CVE-2022-0566
Summary It may be possible for an attacker to craft an email message that causes Thunderbird to perform an out-of-bounds write of one byte when processing the message.
Status Published
Exploitability 0.5
Weighted Severity 8.0
Risk 4.0
Affected and Fixed Packages Package Details
Weaknesses (1)
CWE-787 Out-of-bounds Write
System Score Found at
cvssv3 7.6 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2022-0566.json
epss 0.00118 https://api.first.org/data/v1/epss?cve=CVE-2022-0566
epss 0.00118 https://api.first.org/data/v1/epss?cve=CVE-2022-0566
epss 0.00118 https://api.first.org/data/v1/epss?cve=CVE-2022-0566
epss 0.00154 https://api.first.org/data/v1/epss?cve=CVE-2022-0566
epss 0.00154 https://api.first.org/data/v1/epss?cve=CVE-2022-0566
epss 0.00154 https://api.first.org/data/v1/epss?cve=CVE-2022-0566
epss 0.00154 https://api.first.org/data/v1/epss?cve=CVE-2022-0566
epss 0.00154 https://api.first.org/data/v1/epss?cve=CVE-2022-0566
epss 0.00154 https://api.first.org/data/v1/epss?cve=CVE-2022-0566
epss 0.00154 https://api.first.org/data/v1/epss?cve=CVE-2022-0566
epss 0.00154 https://api.first.org/data/v1/epss?cve=CVE-2022-0566
epss 0.00154 https://api.first.org/data/v1/epss?cve=CVE-2022-0566
epss 0.00154 https://api.first.org/data/v1/epss?cve=CVE-2022-0566
epss 0.00154 https://api.first.org/data/v1/epss?cve=CVE-2022-0566
epss 0.00154 https://api.first.org/data/v1/epss?cve=CVE-2022-0566
epss 0.00154 https://api.first.org/data/v1/epss?cve=CVE-2022-0566
epss 0.00154 https://api.first.org/data/v1/epss?cve=CVE-2022-0566
cvssv3.1 8.8 https://bugzilla.mozilla.org/show_bug.cgi?id=1753094
ssvc Track https://bugzilla.mozilla.org/show_bug.cgi?id=1753094
cvssv3.1 8.8 https://nvd.nist.gov/vuln/detail/CVE-2022-0566
generic_textual high https://www.mozilla.org/en-US/security/advisories/mfsa2022-07
cvssv3.1 8.8 https://www.mozilla.org/security/advisories/mfsa2022-07/
ssvc Track https://www.mozilla.org/security/advisories/mfsa2022-07/
Reference id Reference type URL
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2022-0566.json
https://api.first.org/data/v1/epss?cve=CVE-2022-0566
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-0566
2055591 https://bugzilla.redhat.com/show_bug.cgi?id=2055591
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:*:*:*:*:*:*:*:*
CVE-2022-0566 https://nvd.nist.gov/vuln/detail/CVE-2022-0566
mfsa2022-07 https://www.mozilla.org/en-US/security/advisories/mfsa2022-07
mfsa2022-07 https://www.mozilla.org/security/advisories/mfsa2022-07/
RHSA-2022:0843 https://access.redhat.com/errata/RHSA-2022:0843
RHSA-2022:0845 https://access.redhat.com/errata/RHSA-2022:0845
RHSA-2022:0847 https://access.redhat.com/errata/RHSA-2022:0847
RHSA-2022:0850 https://access.redhat.com/errata/RHSA-2022:0850
RHSA-2022:0853 https://access.redhat.com/errata/RHSA-2022:0853
show_bug.cgi?id=1753094 https://bugzilla.mozilla.org/show_bug.cgi?id=1753094
USN-5345-1 https://usn.ubuntu.com/5345-1/
No exploits are available.
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:H/A:L Found at https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2022-0566.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://bugzilla.mozilla.org/show_bug.cgi?id=1753094
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: SSVCv2/E:N/A:N/T:T/P:M/B:A/M:M/D:T/2025-04-16T15:36:53Z/ Found at https://bugzilla.mozilla.org/show_bug.cgi?id=1753094
Vector: CVSS:3.1/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-2022-0566
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://www.mozilla.org/security/advisories/mfsa2022-07/
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: SSVCv2/E:N/A:N/T:T/P:M/B:A/M:M/D:T/2025-04-16T15:36:53Z/ Found at https://www.mozilla.org/security/advisories/mfsa2022-07/
Exploit Prediction Scoring System (EPSS)
Percentile 0.31457
EPSS Score 0.00118
Published At July 30, 2025, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2025-07-31T08:10:05.065473+00:00 Mozilla Importer Import https://github.com/mozilla/foundation-security-advisories/blob/master/announce/2022/mfsa2022-07.yml 37.0.0