CVE-2025-10534
Firefox Cross-Site Scripting (XSS)
Description
This vulnerability affects Firefox < 143 and Thunderbird < 143.
INFO
Published Date :
Sept. 16, 2025, 1:15 p.m.
Last Modified :
Sept. 19, 2025, 8:34 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | HIGH | 134c704f-9b21-4f2e-91b3-4a467353bcc0 |
Solution
- Update Firefox to version 143 or later.
- Verify the installed Firefox version.
Public PoC/Exploit Available at Github
CVE-2025-10534 has a 1 public
PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2025-10534.
| URL | Resource |
|---|---|
| https://bugzilla.mozilla.org/show_bug.cgi?id=1665334 | Permissions Required |
| https://www.mozilla.org/security/advisories/mfsa2025-73/ | Vendor Advisory |
| https://www.mozilla.org/security/advisories/mfsa2025-77/ | Vendor Advisory |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2025-10534 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2025-10534
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
EPSS & VEDAS Score Aggregator for CVEs
cve vulnerability exploit epss vedas exploit-maturity
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2025-10534 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2025-10534 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
Sep. 19, 2025
Action Type Old Value New Value Added CPE Configuration OR *cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:* versions up to (excluding) 143.0 *cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:* versions up to (excluding) 143.0 Added Reference Type Mozilla Corporation: https://bugzilla.mozilla.org/show_bug.cgi?id=1665334 Types: Permissions Required Added Reference Type Mozilla Corporation: https://www.mozilla.org/security/advisories/mfsa2025-73/ Types: Vendor Advisory Added Reference Type Mozilla Corporation: https://www.mozilla.org/security/advisories/mfsa2025-77/ Types: Vendor Advisory -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Sep. 17, 2025
Action Type Old Value New Value Added CVSS V3.1 AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N Added CWE CWE-79 -
CVE Modified by [email protected]
Sep. 16, 2025
Action Type Old Value New Value Changed Description This vulnerability affects Firefox < 143. This vulnerability affects Firefox < 143 and Thunderbird < 143. Added Reference https://www.mozilla.org/security/advisories/mfsa2025-77/ -
New CVE Received by [email protected]
Sep. 16, 2025
Action Type Old Value New Value Added Description This vulnerability affects Firefox < 143. Added Reference https://bugzilla.mozilla.org/show_bug.cgi?id=1665334 Added Reference https://www.mozilla.org/security/advisories/mfsa2025-73/