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Vulnerability details: VCID-vqau-1p4x-myby
Vulnerability ID VCID-vqau-1p4x-myby
Aliases CVE-2023-4573
Summary When receiving rendering data over IPC mStream could have been destroyed when initialized, which could have led to a use-after-free causing a potentially exploitable crash.
Status Published
Exploitability 0.5
Weighted Severity 8.0
Risk 4.0
Affected and Fixed Packages Package Details
Weaknesses (1)
CWE-416 Use After Free
System Score Found at
cvssv3 7.5 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2023-4573.json
epss 0.00124 https://api.first.org/data/v1/epss?cve=CVE-2023-4573
epss 0.00145 https://api.first.org/data/v1/epss?cve=CVE-2023-4573
epss 0.00145 https://api.first.org/data/v1/epss?cve=CVE-2023-4573
epss 0.00145 https://api.first.org/data/v1/epss?cve=CVE-2023-4573
epss 0.00145 https://api.first.org/data/v1/epss?cve=CVE-2023-4573
epss 0.00145 https://api.first.org/data/v1/epss?cve=CVE-2023-4573
epss 0.00145 https://api.first.org/data/v1/epss?cve=CVE-2023-4573
epss 0.00145 https://api.first.org/data/v1/epss?cve=CVE-2023-4573
epss 0.00145 https://api.first.org/data/v1/epss?cve=CVE-2023-4573
epss 0.00145 https://api.first.org/data/v1/epss?cve=CVE-2023-4573
epss 0.00145 https://api.first.org/data/v1/epss?cve=CVE-2023-4573
epss 0.00145 https://api.first.org/data/v1/epss?cve=CVE-2023-4573
epss 0.00145 https://api.first.org/data/v1/epss?cve=CVE-2023-4573
epss 0.00145 https://api.first.org/data/v1/epss?cve=CVE-2023-4573
epss 0.00145 https://api.first.org/data/v1/epss?cve=CVE-2023-4573
epss 0.00145 https://api.first.org/data/v1/epss?cve=CVE-2023-4573
epss 0.00145 https://api.first.org/data/v1/epss?cve=CVE-2023-4573
epss 0.00145 https://api.first.org/data/v1/epss?cve=CVE-2023-4573
ssvc Track https://bugzilla.mozilla.org/show_bug.cgi?id=1846687
cvssv3.1 6.5 https://nvd.nist.gov/vuln/detail/CVE-2023-4573
generic_textual high https://www.mozilla.org/en-US/security/advisories/mfsa2023-34
generic_textual high https://www.mozilla.org/en-US/security/advisories/mfsa2023-35
generic_textual high https://www.mozilla.org/en-US/security/advisories/mfsa2023-36
generic_textual high https://www.mozilla.org/en-US/security/advisories/mfsa2023-37
generic_textual high https://www.mozilla.org/en-US/security/advisories/mfsa2023-38
ssvc Track https://www.mozilla.org/security/advisories/mfsa2023-34/
ssvc Track https://www.mozilla.org/security/advisories/mfsa2023-35/
ssvc Track https://www.mozilla.org/security/advisories/mfsa2023-36/
ssvc Track https://www.mozilla.org/security/advisories/mfsa2023-37/
ssvc Track https://www.mozilla.org/security/advisories/mfsa2023-38/
Reference id Reference type URL
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2023-4573.json
https://api.first.org/data/v1/epss?cve=CVE-2023-4573
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-4573
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-4574
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-4575
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-4581
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-4584
2236071 https://bugzilla.redhat.com/show_bug.cgi?id=2236071
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-2023-4573 https://nvd.nist.gov/vuln/detail/CVE-2023-4573
mfsa2023-34 https://www.mozilla.org/en-US/security/advisories/mfsa2023-34
mfsa2023-34 https://www.mozilla.org/security/advisories/mfsa2023-34/
mfsa2023-35 https://www.mozilla.org/en-US/security/advisories/mfsa2023-35
mfsa2023-35 https://www.mozilla.org/security/advisories/mfsa2023-35/
mfsa2023-36 https://www.mozilla.org/en-US/security/advisories/mfsa2023-36
mfsa2023-36 https://www.mozilla.org/security/advisories/mfsa2023-36/
mfsa2023-37 https://www.mozilla.org/en-US/security/advisories/mfsa2023-37
mfsa2023-37 https://www.mozilla.org/security/advisories/mfsa2023-37/
mfsa2023-38 https://www.mozilla.org/en-US/security/advisories/mfsa2023-38
mfsa2023-38 https://www.mozilla.org/security/advisories/mfsa2023-38/
RHSA-2023:4945 https://access.redhat.com/errata/RHSA-2023:4945
RHSA-2023:4946 https://access.redhat.com/errata/RHSA-2023:4946
RHSA-2023:4947 https://access.redhat.com/errata/RHSA-2023:4947
RHSA-2023:4948 https://access.redhat.com/errata/RHSA-2023:4948
RHSA-2023:4949 https://access.redhat.com/errata/RHSA-2023:4949
RHSA-2023:4950 https://access.redhat.com/errata/RHSA-2023:4950
RHSA-2023:4951 https://access.redhat.com/errata/RHSA-2023:4951
RHSA-2023:4952 https://access.redhat.com/errata/RHSA-2023:4952
RHSA-2023:4954 https://access.redhat.com/errata/RHSA-2023:4954
RHSA-2023:4955 https://access.redhat.com/errata/RHSA-2023:4955
RHSA-2023:4956 https://access.redhat.com/errata/RHSA-2023:4956
RHSA-2023:4957 https://access.redhat.com/errata/RHSA-2023:4957
RHSA-2023:4958 https://access.redhat.com/errata/RHSA-2023:4958
RHSA-2023:4959 https://access.redhat.com/errata/RHSA-2023:4959
RHSA-2023:5019 https://access.redhat.com/errata/RHSA-2023:5019
show_bug.cgi?id=1846687 https://bugzilla.mozilla.org/show_bug.cgi?id=1846687
USN-6320-1 https://usn.ubuntu.com/6320-1/
USN-6368-1 https://usn.ubuntu.com/6368-1/
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-2023-4573.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: SSVCv2/E:N/A:Y/T:P/P:M/B:A/M:M/D:T/2024-09-26T15:08:18Z/ Found at https://bugzilla.mozilla.org/show_bug.cgi?id=1846687
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H Found at https://nvd.nist.gov/vuln/detail/CVE-2023-4573
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:Y/T:P/P:M/B:A/M:M/D:T/2024-09-26T15:08:18Z/ Found at https://www.mozilla.org/security/advisories/mfsa2023-34/
Vector: SSVCv2/E:N/A:Y/T:P/P:M/B:A/M:M/D:T/2024-09-26T15:08:18Z/ Found at https://www.mozilla.org/security/advisories/mfsa2023-35/
Vector: SSVCv2/E:N/A:Y/T:P/P:M/B:A/M:M/D:T/2024-09-26T15:08:18Z/ Found at https://www.mozilla.org/security/advisories/mfsa2023-36/
Vector: SSVCv2/E:N/A:Y/T:P/P:M/B:A/M:M/D:T/2024-09-26T15:08:18Z/ Found at https://www.mozilla.org/security/advisories/mfsa2023-37/
Vector: SSVCv2/E:N/A:Y/T:P/P:M/B:A/M:M/D:T/2024-09-26T15:08:18Z/ Found at https://www.mozilla.org/security/advisories/mfsa2023-38/
Exploit Prediction Scoring System (EPSS)
Percentile 0.32427
EPSS Score 0.00124
Published At Aug. 16, 2025, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2025-07-31T08:09:32.033853+00:00 Mozilla Importer Import https://github.com/mozilla/foundation-security-advisories/blob/master/announce/2023/mfsa2023-38.yml 37.0.0