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Vulnerability details: VCID-qbxz-6fha-ffcj
Vulnerability ID VCID-qbxz-6fha-ffcj
Aliases CVE-2022-45421
Summary Mozilla developers Andrew McCreight and Gabriele Svelto reported memory safety bugs present in Thunderbird 102.4. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code.
Status Published
Exploitability 0.5
Weighted Severity 8.0
Risk 4.0
Affected and Fixed Packages Package Details
Weaknesses (2)
CWE-120 Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
CWE-787 Out-of-bounds Write
System Score Found at
cvssv3 8.8 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2022-45421.json
epss 0.00122 https://api.first.org/data/v1/epss?cve=CVE-2022-45421
epss 0.00122 https://api.first.org/data/v1/epss?cve=CVE-2022-45421
epss 0.00122 https://api.first.org/data/v1/epss?cve=CVE-2022-45421
epss 0.00122 https://api.first.org/data/v1/epss?cve=CVE-2022-45421
epss 0.00122 https://api.first.org/data/v1/epss?cve=CVE-2022-45421
epss 0.00122 https://api.first.org/data/v1/epss?cve=CVE-2022-45421
epss 0.00122 https://api.first.org/data/v1/epss?cve=CVE-2022-45421
epss 0.00122 https://api.first.org/data/v1/epss?cve=CVE-2022-45421
epss 0.00122 https://api.first.org/data/v1/epss?cve=CVE-2022-45421
epss 0.00122 https://api.first.org/data/v1/epss?cve=CVE-2022-45421
epss 0.00122 https://api.first.org/data/v1/epss?cve=CVE-2022-45421
epss 0.00122 https://api.first.org/data/v1/epss?cve=CVE-2022-45421
epss 0.00122 https://api.first.org/data/v1/epss?cve=CVE-2022-45421
epss 0.00122 https://api.first.org/data/v1/epss?cve=CVE-2022-45421
epss 0.00122 https://api.first.org/data/v1/epss?cve=CVE-2022-45421
epss 0.00122 https://api.first.org/data/v1/epss?cve=CVE-2022-45421
epss 0.00122 https://api.first.org/data/v1/epss?cve=CVE-2022-45421
epss 0.00125 https://api.first.org/data/v1/epss?cve=CVE-2022-45421
cvssv3.1 8.8 https://bugzilla.mozilla.org/buglist.cgi?bug_id=1767920%2C1789808%2C1794061
ssvc Track https://bugzilla.mozilla.org/buglist.cgi?bug_id=1767920%2C1789808%2C1794061
cvssv3.1 8.8 https://nvd.nist.gov/vuln/detail/CVE-2022-45421
generic_textual high https://www.mozilla.org/en-US/security/advisories/mfsa2022-47
generic_textual high https://www.mozilla.org/en-US/security/advisories/mfsa2022-48
generic_textual high https://www.mozilla.org/en-US/security/advisories/mfsa2022-49
cvssv3.1 8.8 https://www.mozilla.org/security/advisories/mfsa2022-47/
ssvc Track https://www.mozilla.org/security/advisories/mfsa2022-47/
cvssv3.1 8.8 https://www.mozilla.org/security/advisories/mfsa2022-48/
ssvc Track https://www.mozilla.org/security/advisories/mfsa2022-48/
cvssv3.1 8.8 https://www.mozilla.org/security/advisories/mfsa2022-49/
ssvc Track https://www.mozilla.org/security/advisories/mfsa2022-49/
Reference id Reference type URL
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2022-45421.json
https://api.first.org/data/v1/epss?cve=CVE-2022-45421
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-45403
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-45404
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-45405
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-45406
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-45408
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-45409
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-45410
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-45411
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-45412
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-45416
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-45418
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-45420
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-45421
2143243 https://bugzilla.redhat.com/show_bug.cgi?id=2143243
buglist.cgi?bug_id=1767920%2C1789808%2C1794061 https://bugzilla.mozilla.org/buglist.cgi?bug_id=1767920%2C1789808%2C1794061
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:*:*:*:*:*:*:*:*
CVE-2022-45421 https://nvd.nist.gov/vuln/detail/CVE-2022-45421
mfsa2022-47 https://www.mozilla.org/en-US/security/advisories/mfsa2022-47
mfsa2022-47 https://www.mozilla.org/security/advisories/mfsa2022-47/
mfsa2022-48 https://www.mozilla.org/en-US/security/advisories/mfsa2022-48
mfsa2022-48 https://www.mozilla.org/security/advisories/mfsa2022-48/
mfsa2022-49 https://www.mozilla.org/en-US/security/advisories/mfsa2022-49
mfsa2022-49 https://www.mozilla.org/security/advisories/mfsa2022-49/
RHSA-2022:8543 https://access.redhat.com/errata/RHSA-2022:8543
RHSA-2022:8544 https://access.redhat.com/errata/RHSA-2022:8544
RHSA-2022:8545 https://access.redhat.com/errata/RHSA-2022:8545
RHSA-2022:8547 https://access.redhat.com/errata/RHSA-2022:8547
RHSA-2022:8548 https://access.redhat.com/errata/RHSA-2022:8548
RHSA-2022:8549 https://access.redhat.com/errata/RHSA-2022:8549
RHSA-2022:8550 https://access.redhat.com/errata/RHSA-2022:8550
RHSA-2022:8552 https://access.redhat.com/errata/RHSA-2022:8552
RHSA-2022:8553 https://access.redhat.com/errata/RHSA-2022:8553
RHSA-2022:8554 https://access.redhat.com/errata/RHSA-2022:8554
RHSA-2022:8555 https://access.redhat.com/errata/RHSA-2022:8555
RHSA-2022:8556 https://access.redhat.com/errata/RHSA-2022:8556
RHSA-2022:8561 https://access.redhat.com/errata/RHSA-2022:8561
RHSA-2022:8580 https://access.redhat.com/errata/RHSA-2022:8580
RHSA-2022:8979 https://access.redhat.com/errata/RHSA-2022:8979
RHSA-2022:8980 https://access.redhat.com/errata/RHSA-2022:8980
USN-5726-1 https://usn.ubuntu.com/5726-1/
USN-5824-1 https://usn.ubuntu.com/5824-1/
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-2022-45421.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/buglist.cgi?bug_id=1767920%2C1789808%2C1794061
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

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none
Vector: SSVCv2/E:N/A:N/T:T/P:M/B:A/M:M/D:T/2025-04-15T14:14:39Z/ Found at https://bugzilla.mozilla.org/buglist.cgi?bug_id=1767920%2C1789808%2C1794061
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-2022-45421
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/mfsa2022-47/
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

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low

none

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none
Vector: SSVCv2/E:N/A:N/T:T/P:M/B:A/M:M/D:T/2025-04-15T14:14:39Z/ Found at https://www.mozilla.org/security/advisories/mfsa2022-47/
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/mfsa2022-48/
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/2025-04-15T14:14:39Z/ Found at https://www.mozilla.org/security/advisories/mfsa2022-48/
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/mfsa2022-49/
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/2025-04-15T14:14:39Z/ Found at https://www.mozilla.org/security/advisories/mfsa2022-49/
Exploit Prediction Scoring System (EPSS)
Percentile 0.32099
EPSS Score 0.00122
Published At July 30, 2025, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2025-07-31T08:10:02.965836+00:00 Mozilla Importer Import https://github.com/mozilla/foundation-security-advisories/blob/master/announce/2022/mfsa2022-49.yml 37.0.0