CVE-2025-10529 Details
Description
Same-origin policy bypass in the Layout component. This vulnerability was fixed in Firefox 143, Firefox ESR 140.3, Thunderbird 143, and Thunderbird 140.3.
A same-origin policy bypass vulnerability has been identified in Mozilla Firefox versions prior to 143, as well as in Firefox ESR versions prior to 140.3. This vulnerability is also present in Thunderbird versions prior to 143 and Thunderbird ESR versions prior to 140.3. The issue arises in the Layout component and can potentially be exploited in browser or browser-like contexts.
Users can upgrade to Firefox 143, Firefox ESR 140.3, Thunderbird 143, or Thunderbird ESR 140.3 to address this vulnerability.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Sep 17, 2025References to Advisories, Solutions, and Tools
By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-942 | Permissive Cross-domain Policy with Untrusted Domains | CISA-ADP |
Affected Products
| Product | Versions |
|---|---|
| mozilla firefox | < 140.3.0 < 143.0 |
CPE
Remediation
| |
| mozilla thunderbird | < 143.0 |
CPE
Remediation
| |
Change History
9 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Jun 17, 2026 | CVE Modified | [email protected] |
| Apr 13, 2026 | CVE Modified | [email protected] |
| Nov 3, 2025 | CVE Modified | CVE |
| Oct 30, 2025 | CVE Modified | [email protected] |
| Sep 19, 2025 | Initial Analysis | [email protected] |
| Sep 17, 2025 | CVE Modified | CISA-ADP |
| Sep 16, 2025 | CVE Modified | [email protected] |
| Sep 16, 2025 | New CVE Received | [email protected] |