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Vulnerability details: VCID-4hug-e852-zucb
Vulnerability ID VCID-4hug-e852-zucb
Aliases CVE-2025-0243
Summary Memory safety bugs present in Firefox 133, Thunderbird 133, Firefox ESR 128.5, and Thunderbird 128.5. 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. This vulnerability affects Firefox < 134, Firefox ESR < 128.6, Thunderbird < 134, and Thunderbird ESR < 128.6.
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 7.5 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2025-0243.json
epss 0.00028 https://api.first.org/data/v1/epss?cve=CVE-2025-0243
epss 0.00028 https://api.first.org/data/v1/epss?cve=CVE-2025-0243
epss 0.00028 https://api.first.org/data/v1/epss?cve=CVE-2025-0243
epss 0.00035 https://api.first.org/data/v1/epss?cve=CVE-2025-0243
epss 0.00036 https://api.first.org/data/v1/epss?cve=CVE-2025-0243
epss 0.00038 https://api.first.org/data/v1/epss?cve=CVE-2025-0243
epss 0.00038 https://api.first.org/data/v1/epss?cve=CVE-2025-0243
epss 0.00038 https://api.first.org/data/v1/epss?cve=CVE-2025-0243
epss 0.00038 https://api.first.org/data/v1/epss?cve=CVE-2025-0243
epss 0.00038 https://api.first.org/data/v1/epss?cve=CVE-2025-0243
epss 0.00038 https://api.first.org/data/v1/epss?cve=CVE-2025-0243
epss 0.00038 https://api.first.org/data/v1/epss?cve=CVE-2025-0243
epss 0.00038 https://api.first.org/data/v1/epss?cve=CVE-2025-0243
epss 0.00038 https://api.first.org/data/v1/epss?cve=CVE-2025-0243
epss 0.00038 https://api.first.org/data/v1/epss?cve=CVE-2025-0243
epss 0.00038 https://api.first.org/data/v1/epss?cve=CVE-2025-0243
epss 0.00038 https://api.first.org/data/v1/epss?cve=CVE-2025-0243
epss 0.00038 https://api.first.org/data/v1/epss?cve=CVE-2025-0243
epss 0.00038 https://api.first.org/data/v1/epss?cve=CVE-2025-0243
epss 0.00038 https://api.first.org/data/v1/epss?cve=CVE-2025-0243
epss 0.00038 https://api.first.org/data/v1/epss?cve=CVE-2025-0243
epss 0.00038 https://api.first.org/data/v1/epss?cve=CVE-2025-0243
epss 0.00038 https://api.first.org/data/v1/epss?cve=CVE-2025-0243
epss 0.00038 https://api.first.org/data/v1/epss?cve=CVE-2025-0243
epss 0.00038 https://api.first.org/data/v1/epss?cve=CVE-2025-0243
epss 0.00038 https://api.first.org/data/v1/epss?cve=CVE-2025-0243
epss 0.00038 https://api.first.org/data/v1/epss?cve=CVE-2025-0243
epss 0.00038 https://api.first.org/data/v1/epss?cve=CVE-2025-0243
epss 0.00038 https://api.first.org/data/v1/epss?cve=CVE-2025-0243
epss 0.00038 https://api.first.org/data/v1/epss?cve=CVE-2025-0243
epss 0.00038 https://api.first.org/data/v1/epss?cve=CVE-2025-0243
epss 0.00038 https://api.first.org/data/v1/epss?cve=CVE-2025-0243
epss 0.00038 https://api.first.org/data/v1/epss?cve=CVE-2025-0243
epss 0.00038 https://api.first.org/data/v1/epss?cve=CVE-2025-0243
epss 0.00038 https://api.first.org/data/v1/epss?cve=CVE-2025-0243
epss 0.00038 https://api.first.org/data/v1/epss?cve=CVE-2025-0243
epss 0.00038 https://api.first.org/data/v1/epss?cve=CVE-2025-0243
epss 0.00038 https://api.first.org/data/v1/epss?cve=CVE-2025-0243
epss 0.00038 https://api.first.org/data/v1/epss?cve=CVE-2025-0243
epss 0.00039 https://api.first.org/data/v1/epss?cve=CVE-2025-0243
epss 0.00039 https://api.first.org/data/v1/epss?cve=CVE-2025-0243
epss 0.00039 https://api.first.org/data/v1/epss?cve=CVE-2025-0243
epss 0.00039 https://api.first.org/data/v1/epss?cve=CVE-2025-0243
epss 0.00039 https://api.first.org/data/v1/epss?cve=CVE-2025-0243
epss 0.00039 https://api.first.org/data/v1/epss?cve=CVE-2025-0243
epss 0.00039 https://api.first.org/data/v1/epss?cve=CVE-2025-0243
epss 0.00039 https://api.first.org/data/v1/epss?cve=CVE-2025-0243
epss 0.00041 https://api.first.org/data/v1/epss?cve=CVE-2025-0243
epss 0.00045 https://api.first.org/data/v1/epss?cve=CVE-2025-0243
epss 0.00049 https://api.first.org/data/v1/epss?cve=CVE-2025-0243
epss 0.00049 https://api.first.org/data/v1/epss?cve=CVE-2025-0243
epss 0.00049 https://api.first.org/data/v1/epss?cve=CVE-2025-0243
epss 0.00049 https://api.first.org/data/v1/epss?cve=CVE-2025-0243
epss 0.00049 https://api.first.org/data/v1/epss?cve=CVE-2025-0243
epss 0.00049 https://api.first.org/data/v1/epss?cve=CVE-2025-0243
epss 0.00049 https://api.first.org/data/v1/epss?cve=CVE-2025-0243
epss 0.00049 https://api.first.org/data/v1/epss?cve=CVE-2025-0243
epss 0.00049 https://api.first.org/data/v1/epss?cve=CVE-2025-0243
epss 0.00049 https://api.first.org/data/v1/epss?cve=CVE-2025-0243
epss 0.00049 https://api.first.org/data/v1/epss?cve=CVE-2025-0243
epss 0.00049 https://api.first.org/data/v1/epss?cve=CVE-2025-0243
epss 0.00049 https://api.first.org/data/v1/epss?cve=CVE-2025-0243
epss 0.00049 https://api.first.org/data/v1/epss?cve=CVE-2025-0243
epss 0.00049 https://api.first.org/data/v1/epss?cve=CVE-2025-0243
epss 0.00049 https://api.first.org/data/v1/epss?cve=CVE-2025-0243
epss 0.00049 https://api.first.org/data/v1/epss?cve=CVE-2025-0243
epss 0.00049 https://api.first.org/data/v1/epss?cve=CVE-2025-0243
epss 0.00049 https://api.first.org/data/v1/epss?cve=CVE-2025-0243
epss 0.00049 https://api.first.org/data/v1/epss?cve=CVE-2025-0243
epss 0.00049 https://api.first.org/data/v1/epss?cve=CVE-2025-0243
epss 0.00049 https://api.first.org/data/v1/epss?cve=CVE-2025-0243
cvssv3.1 5.1 https://bugzilla.mozilla.org/buglist.cgi?bug_id=1827142%2C1932783
ssvc Track https://bugzilla.mozilla.org/buglist.cgi?bug_id=1827142%2C1932783
cvssv3.1 5.1 https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
generic_textual high https://www.mozilla.org/en-US/security/advisories/mfsa2025-01
generic_textual none https://www.mozilla.org/en-US/security/advisories/mfsa2025-02
generic_textual high https://www.mozilla.org/en-US/security/advisories/mfsa2025-04
generic_textual none https://www.mozilla.org/en-US/security/advisories/mfsa2025-05
cvssv3.1 5.1 https://www.mozilla.org/security/advisories/mfsa2025-01/
ssvc Track https://www.mozilla.org/security/advisories/mfsa2025-01/
cvssv3.1 5.1 https://www.mozilla.org/security/advisories/mfsa2025-02/
ssvc Track https://www.mozilla.org/security/advisories/mfsa2025-02/
cvssv3.1 5.1 https://www.mozilla.org/security/advisories/mfsa2025-04/
ssvc Track https://www.mozilla.org/security/advisories/mfsa2025-04/
cvssv3.1 5.1 https://www.mozilla.org/security/advisories/mfsa2025-05/
ssvc Track https://www.mozilla.org/security/advisories/mfsa2025-05/
Reference id Reference type URL
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2025-0243.json
https://api.first.org/data/v1/epss?cve=CVE-2025-0243
https://bugzilla.mozilla.org/buglist.cgi?bug_id=1827142%2C1932783
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2025-0243
https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
https://www.mozilla.org/security/advisories/mfsa2025-01/
https://www.mozilla.org/security/advisories/mfsa2025-02/
https://www.mozilla.org/security/advisories/mfsa2025-04/
https://www.mozilla.org/security/advisories/mfsa2025-05/
2336175 https://bugzilla.redhat.com/show_bug.cgi?id=2336175
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-2025-0243 https://nvd.nist.gov/vuln/detail/CVE-2025-0243
GLSA-202501-10 https://security.gentoo.org/glsa/202501-10
GLSA-202505-03 https://security.gentoo.org/glsa/202505-03
mfsa2025-01 https://www.mozilla.org/en-US/security/advisories/mfsa2025-01
mfsa2025-02 https://www.mozilla.org/en-US/security/advisories/mfsa2025-02
mfsa2025-04 https://www.mozilla.org/en-US/security/advisories/mfsa2025-04
mfsa2025-05 https://www.mozilla.org/en-US/security/advisories/mfsa2025-05
RHSA-2025:0080 https://access.redhat.com/errata/RHSA-2025:0080
RHSA-2025:0132 https://access.redhat.com/errata/RHSA-2025:0132
RHSA-2025:0133 https://access.redhat.com/errata/RHSA-2025:0133
RHSA-2025:0134 https://access.redhat.com/errata/RHSA-2025:0134
RHSA-2025:0135 https://access.redhat.com/errata/RHSA-2025:0135
RHSA-2025:0136 https://access.redhat.com/errata/RHSA-2025:0136
RHSA-2025:0137 https://access.redhat.com/errata/RHSA-2025:0137
RHSA-2025:0138 https://access.redhat.com/errata/RHSA-2025:0138
RHSA-2025:0144 https://access.redhat.com/errata/RHSA-2025:0144
RHSA-2025:0147 https://access.redhat.com/errata/RHSA-2025:0147
RHSA-2025:0162 https://access.redhat.com/errata/RHSA-2025:0162
RHSA-2025:0165 https://access.redhat.com/errata/RHSA-2025:0165
RHSA-2025:0166 https://access.redhat.com/errata/RHSA-2025:0166
RHSA-2025:0167 https://access.redhat.com/errata/RHSA-2025:0167
RHSA-2025:0275 https://access.redhat.com/errata/RHSA-2025:0275
RHSA-2025:0281 https://access.redhat.com/errata/RHSA-2025:0281
RHSA-2025:0284 https://access.redhat.com/errata/RHSA-2025:0284
RHSA-2025:0286 https://access.redhat.com/errata/RHSA-2025:0286
RHSA-2025:0287 https://access.redhat.com/errata/RHSA-2025:0287
USN-7191-1 https://usn.ubuntu.com/7191-1/
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-2025-0243.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:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N Found at https://bugzilla.mozilla.org/buglist.cgi?bug_id=1827142%2C1932783
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/2025-01-08T16:44:56Z/ Found at https://bugzilla.mozilla.org/buglist.cgi?bug_id=1827142%2C1932783
Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N 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
Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N Found at https://www.mozilla.org/security/advisories/mfsa2025-01/
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/2025-01-08T16:44:56Z/ Found at https://www.mozilla.org/security/advisories/mfsa2025-01/
Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N Found at https://www.mozilla.org/security/advisories/mfsa2025-02/
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/2025-01-08T16:44:56Z/ Found at https://www.mozilla.org/security/advisories/mfsa2025-02/
Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N Found at https://www.mozilla.org/security/advisories/mfsa2025-04/
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/2025-01-08T16:44:56Z/ Found at https://www.mozilla.org/security/advisories/mfsa2025-04/
Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N Found at https://www.mozilla.org/security/advisories/mfsa2025-05/
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/2025-01-08T16:44:56Z/ Found at https://www.mozilla.org/security/advisories/mfsa2025-05/
Exploit Prediction Scoring System (EPSS)
Percentile 0.04916
EPSS Score 0.00028
Published At March 28, 2025, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2025-01-12T22:33:25.625749+00:00 NVD Importer Import https://nvd.nist.gov/vuln/detail/CVE-2025-0243 35.1.0