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Vulnerability details: VCID-upud-a3vp-9fgq
Vulnerability ID VCID-upud-a3vp-9fgq
Aliases CVE-2023-0547
Summary OCSP revocation status of recipient certificates was not checked when sending S/Mime encrypted email, and revoked certificates would be accepted. Thunderbird versions from 68 to 102.9.1 were affected by this bug.
Status Published
Exploitability 0.5
Weighted Severity 8.0
Risk 4.0
Affected and Fixed Packages Package Details
Weaknesses (2)
CWE-356 Product UI does not Warn User of Unsafe Actions
CWE-295 Improper Certificate Validation
System Score Found at
cvssv3 7.5 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2023-0547.json
epss 0.00097 https://api.first.org/data/v1/epss?cve=CVE-2023-0547
epss 0.00097 https://api.first.org/data/v1/epss?cve=CVE-2023-0547
epss 0.00097 https://api.first.org/data/v1/epss?cve=CVE-2023-0547
epss 0.00097 https://api.first.org/data/v1/epss?cve=CVE-2023-0547
epss 0.00097 https://api.first.org/data/v1/epss?cve=CVE-2023-0547
epss 0.00097 https://api.first.org/data/v1/epss?cve=CVE-2023-0547
epss 0.00097 https://api.first.org/data/v1/epss?cve=CVE-2023-0547
epss 0.00097 https://api.first.org/data/v1/epss?cve=CVE-2023-0547
epss 0.00097 https://api.first.org/data/v1/epss?cve=CVE-2023-0547
epss 0.00097 https://api.first.org/data/v1/epss?cve=CVE-2023-0547
epss 0.00097 https://api.first.org/data/v1/epss?cve=CVE-2023-0547
epss 0.00097 https://api.first.org/data/v1/epss?cve=CVE-2023-0547
epss 0.00097 https://api.first.org/data/v1/epss?cve=CVE-2023-0547
epss 0.00097 https://api.first.org/data/v1/epss?cve=CVE-2023-0547
epss 0.00097 https://api.first.org/data/v1/epss?cve=CVE-2023-0547
epss 0.00097 https://api.first.org/data/v1/epss?cve=CVE-2023-0547
epss 0.00097 https://api.first.org/data/v1/epss?cve=CVE-2023-0547
epss 0.001 https://api.first.org/data/v1/epss?cve=CVE-2023-0547
cvssv3.1 6.5 https://bugzilla.mozilla.org/show_bug.cgi?id=1811298
ssvc Track https://bugzilla.mozilla.org/show_bug.cgi?id=1811298
cvssv3.1 6.5 https://nvd.nist.gov/vuln/detail/CVE-2023-0547
generic_textual high https://www.mozilla.org/en-US/security/advisories/mfsa2023-15
cvssv3.1 6.5 https://www.mozilla.org/security/advisories/mfsa2023-15/
ssvc Track https://www.mozilla.org/security/advisories/mfsa2023-15/
Reference id Reference type URL
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2023-0547.json
https://api.first.org/data/v1/epss?cve=CVE-2023-0547
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-0547
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-1945
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-1999
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-28427
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-29479
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-29533
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-29535
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-29536
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-29539
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-29541
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-29548
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-29550
2186734 https://bugzilla.redhat.com/show_bug.cgi?id=2186734
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-2023-0547 https://nvd.nist.gov/vuln/detail/CVE-2023-0547
mfsa2023-15 https://www.mozilla.org/en-US/security/advisories/mfsa2023-15
mfsa2023-15 https://www.mozilla.org/security/advisories/mfsa2023-15/
RHSA-2023:1802 https://access.redhat.com/errata/RHSA-2023:1802
RHSA-2023:1803 https://access.redhat.com/errata/RHSA-2023:1803
RHSA-2023:1804 https://access.redhat.com/errata/RHSA-2023:1804
RHSA-2023:1805 https://access.redhat.com/errata/RHSA-2023:1805
RHSA-2023:1806 https://access.redhat.com/errata/RHSA-2023:1806
RHSA-2023:1809 https://access.redhat.com/errata/RHSA-2023:1809
RHSA-2023:1810 https://access.redhat.com/errata/RHSA-2023:1810
RHSA-2023:1811 https://access.redhat.com/errata/RHSA-2023:1811
show_bug.cgi?id=1811298 https://bugzilla.mozilla.org/show_bug.cgi?id=1811298
USN-6015-1 https://usn.ubuntu.com/6015-1/
No exploits are available.
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H Found at https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2023-0547.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:N/I:H/A:N Found at https://bugzilla.mozilla.org/show_bug.cgi?id=1811298
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:P/P:M/B:A/M:M/D:T/2025-01-10T18:19:51Z/ Found at https://bugzilla.mozilla.org/show_bug.cgi?id=1811298
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N Found at https://nvd.nist.gov/vuln/detail/CVE-2023-0547
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:N/I:H/A:N Found at https://www.mozilla.org/security/advisories/mfsa2023-15/
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:P/P:M/B:A/M:M/D:T/2025-01-10T18:19:51Z/ Found at https://www.mozilla.org/security/advisories/mfsa2023-15/
Exploit Prediction Scoring System (EPSS)
Percentile 0.27881
EPSS Score 0.00097
Published At July 30, 2025, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2025-07-31T08:09:35.206269+00:00 Mozilla Importer Import https://github.com/mozilla/foundation-security-advisories/blob/master/announce/2023/mfsa2023-15.yml 37.0.0