This vulnerability affects Firefox < 143, Firefox ESR < 140.3, Thunderbird < 143, and Thunderbird < 140.3.

Metrics

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Changed

Confidentiality Impact Low

Integrity Impact Low

Availability Impact Low

User Interaction Required

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploitation none

Automatable no

Technical Impact partial

Affected Vendors & Products

Vendors Products
Mozilla
  • Firefox
  • Firefox Esr
  • Thunderbird
Redhat
  • Enterprise Linux

Configuration 1 [-]

OR cpe:2.3:a:mozilla:firefox:*:*:*:*:esr:*:*:*
cpe:2.3:a:mozilla:firefox:*:*:*:*:-:*:*:*
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*
Package CPE Advisory Released Date
Red Hat Enterprise Linux 10
firefox-0:140.3.0-1.el10_0 cpe:/o:redhat:enterprise_linux:10.0 RHSA-2025:16109 2025-09-17T00:00:00Z
Red Hat Enterprise Linux 9
firefox-0:140.3.0-1.el9_6 cpe:/a:redhat:enterprise_linux:9 RHSA-2025:16108 2025-09-17T00:00:00Z
References
Link Providers
https://bugzilla.mozilla.org/show_bug.cgi?id=1984825 cve-icon cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2025-10527 cve-icon
https://www.cve.org/CVERecord?id=CVE-2025-10527 cve-icon
https://www.mozilla.org/security/advisories/mfsa2025-73/ cve-icon cve-icon
https://www.mozilla.org/security/advisories/mfsa2025-75/ cve-icon cve-icon
https://www.mozilla.org/security/advisories/mfsa2025-75/#CVE-2025-10527 cve-icon
https://www.mozilla.org/security/advisories/mfsa2025-77/ cve-icon cve-icon
https://www.mozilla.org/security/advisories/mfsa2025-78/ cve-icon cve-icon
https://www.mozilla.org/security/advisories/mfsa2025-78/#CVE-2025-10527 cve-icon
History

Fri, 19 Sep 2025 21:00:00 +0000

Type Values Removed Values Added
CPEs cpe:2.3:a:mozilla:firefox:*:*:*:*:-:*:*:*
cpe:2.3:a:mozilla:firefox:*:*:*:*:esr:*:*:*
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*

Thu, 18 Sep 2025 00:15:00 +0000

Type Values Removed Values Added
Title firefox: thunderbird: Sandbox escape due to use-after-free in the Graphics: Canvas2D component
First Time appeared Redhat
Redhat enterprise Linux
CPEs cpe:/a:redhat:enterprise_linux:9
cpe:/o:redhat:enterprise_linux:10.0
Vendors & Products Redhat
Redhat enterprise Linux
References
Metrics threat_severity

None

 threat_severity

Important

Wed, 17 Sep 2025 11:00:00 +0000

Type Values Removed Values Added
First Time appeared Mozilla
Mozilla firefox
Mozilla firefox Esr
Mozilla thunderbird
Vendors & Products Mozilla
Mozilla firefox
Mozilla firefox Esr
Mozilla thunderbird

Tue, 16 Sep 2025 16:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Tue, 16 Sep 2025 15:00:00 +0000

Type Values Removed Values Added
Description This vulnerability affects Firefox < 143 and Firefox ESR < 140.3. This vulnerability affects Firefox < 143, Firefox ESR < 140.3, Thunderbird < 143, and Thunderbird < 140.3.
Weaknesses CWE-416
References
Metrics cvssV3_1

{'score': 7.1, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L'}

Tue, 16 Sep 2025 12:45:00 +0000

Type Values Removed Values Added
Description This vulnerability affects Firefox < 143 and Firefox ESR < 140.3.
References
cve-icon MITRE

Status: PUBLISHED

Assigner: mozilla

Published: 2025-09-16T12:26:35.079Z

Updated: 2025-09-16T14:55:44.890Z

Reserved: 2025-09-16T06:48:33.808Z

Link: CVE-2025-10527

cve-icon Vulnrichment

Updated: 2025-09-16T13:31:11.825Z

cve-icon NVD

Status : Analyzed

Published: 2025-09-16T13:15:44.457

Modified: 2025-09-19T20:52:16.030

Link: CVE-2025-10527

cve-icon Redhat

Severity : Important

Publid Date: 2025-09-16T12:26:35Z

Links: CVE-2025-10527 - Bugzilla