CVE-2025-0242

Memory safety bugs present in Firefox 133, Thunderbird 133, Firefox ESR 115.18, Firefox ESR 128.5, Thunderbird 115.18, 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, Firefox ESR < 115.19, Thunderbird < 134, and Thunderbird < 128.6.

CVSS v3 6.5 MEDIUM

6.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 3.9 / Impact : 2.5

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://bugzilla.mozilla.org/buglist.cgi?bug_id=1874523%2C1926454%2C1931873%2C1932169	Broken Link Issue Tracking
https://www.mozilla.org/security/advisories/mfsa2025-01/	Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2025-02/	Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2025-03/	Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2025-04/	Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2025-05/	Vendor Advisory
https://lists.debian.org/debian-lts-announce/2025/01/msg00004.html

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:mozilla:firefox:::::esr:::*
	cpe:2.3:a:mozilla:firefox::::::::
	cpe:2.3:a:mozilla:firefox:::::esr:::*
	cpe:2.3:a:mozilla:thunderbird::::::::
	cpe:2.3:a:mozilla:thunderbird::::::::

History

03 Nov 2025, 23:17

Type	Values Removed	Values Added
References		() https://lists.debian.org/debian-lts-announce/2025/01/msg00004.html -

Information

Published : 2025-01-07 16:15

Updated : 2025-11-03 23:17

NVD link : CVE-2025-0242

Mitre link : CVE-2025-0242

CVE.ORG link : CVE-2025-0242

JSON object : View

Products Affected

mozilla

thunderbird
firefox

CWE

CWE-787

Out-of-bounds Write

{"id": "CVE-2025-0242", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Secondary", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 6.5, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N", "integrityImpact": "LOW", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "LOW"}, "impactScore": 2.5, "exploitabilityScore": 3.9}]}, "published": "2025-01-07T16:15:38.860", "references": [{"url": "https://bugzilla.mozilla.org/buglist.cgi?bug_id=1874523%2C1926454%2C1931873%2C1932169", "tags": ["Broken Link", "Issue Tracking"], "source": "[email protected]"}, {"url": "https://www.mozilla.org/security/advisories/mfsa2025-01/", "tags": ["Vendor Advisory"], "source": "[email protected]"}, {"url": "https://www.mozilla.org/security/advisories/mfsa2025-02/", "tags": ["Vendor Advisory"], "source": "[email protected]"}, {"url": "https://www.mozilla.org/security/advisories/mfsa2025-03/", "tags": ["Vendor Advisory"], "source": "[email protected]"}, {"url": "https://www.mozilla.org/security/advisories/mfsa2025-04/", "tags": ["Vendor Advisory"], "source": "[email protected]"}, {"url": "https://www.mozilla.org/security/advisories/mfsa2025-05/", "tags": ["Vendor Advisory"], "source": "[email protected]"}, {"url": "https://lists.debian.org/debian-lts-announce/2025/01/msg00004.html", "source": "af854a3a-2127-422b-91ae-364da2661108"}], "vulnStatus": "Modified", "weaknesses": [{"type": "Secondary", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "description": [{"lang": "en", "value": "CWE-787"}]}], "descriptions": [{"lang": "en", "value": "Memory safety bugs present in Firefox 133, Thunderbird 133, Firefox ESR 115.18, Firefox ESR 128.5, Thunderbird 115.18, 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, Firefox ESR < 115.19, Thunderbird < 134, and Thunderbird < 128.6."}, {"lang": "es", "value": "Se han detectado errores de seguridad de memoria en Firefox 133, Thunderbird 133, Firefox ESR 115.18, Firefox ESR 128.5, Thunderbird 115.18 y Thunderbird 128.5. Algunos de estos errores mostraban evidencia de corrupci\u00f3n de memoria y suponemos que, con el suficiente esfuerzo, algunos de ellos podr\u00edan haberse aprovechado para ejecutar c\u00f3digo arbitrario. Esta vulnerabilidad afecta a Firefox < 134, Firefox ESR < 128.6 y Firefox ESR < 115.19."}], "lastModified": "2025-11-03T23:17:35.730", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:mozilla:firefox:*:*:*:*:esr:*:*:*", "vulnerable": true, "matchCriteriaId": "98ED013A-56D4-4EE4-9B48-527674E3EA47", "versionEndIncluding": "115.19.0"}, {"criteria": "cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "4FDCA935-A68D-404E-A749-CA3845C709F0", "versionEndExcluding": "134.0"}, {"criteria": "cpe:2.3:a:mozilla:firefox:*:*:*:*:esr:*:*:*", "vulnerable": true, "matchCriteriaId": "D7C3860F-7C9C-4B27-979F-FD69389125B1", "versionEndExcluding": "128.6.0", "versionStartIncluding": "116.0"}, {"criteria": "cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "C92D62DE-A681-4B9D-9640-D12D04392A1B", "versionEndExcluding": "128.6.0"}, {"criteria": "cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "A633E231-80F8-4A92-BA69-B9BE5BE45D00", "versionEndExcluding": "134.0", "versionStartIncluding": "129.0"}], "operator": "OR"}]}], "sourceIdentifier": "[email protected]"}