9.8
CRITICAL
CVE-2025-1009
Mozilla Firefox Use-After-Free Memory Corruption Vulnerability
Description

An attacker could have caused a use-after-free via crafted XSLT data, leading to a potentially exploitable crash. This vulnerability affects Firefox < 135, Firefox ESR < 115.20, Firefox ESR < 128.7, Thunderbird < 128.7, and Thunderbird < 135.

INFO

Published Date :

Feb. 4, 2025, 2:15 p.m.

Last Modified :

Feb. 6, 2025, 7:28 p.m.

Remotely Exploitable :

Yes !

Impact Score :

5.9

Exploitability Score :

3.9
Public PoC/Exploit Available at Github

CVE-2025-1009 has a 2 public PoC/Exploit available at Github. Go to the Public Exploits tab to see the list.

Affected Products

The following products are affected by CVE-2025-1009 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Mozilla firefox
2 Mozilla firefox_esr
3 Mozilla thunderbird
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-2025-1009.

URL Resource
https://bugzilla.mozilla.org/show_bug.cgi?id=1936613 Permissions Required
https://www.mozilla.org/security/advisories/mfsa2025-07/ Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2025-08/ Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2025-09/ Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2025-10/ Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2025-11/ Vendor Advisory

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).

DSA and DLA for Debian last 14 days

Python

Updated: 1 week, 2 days ago
0 stars 0 fork 0 watcher
Born at : Feb. 12, 2025, 2:08 p.m. This repo has been linked 125 different CVEs too.

Community reconstruction of the legacy JSON NVD Data Feeds. This project uses and redistributes data from the NVD API but is neither endorsed nor certified by the NVD.

Shell

Updated: 2 weeks, 2 days ago
130 stars 17 fork 17 watcher
Born at : May 17, 2023, 8 a.m. This repo has been linked 53 different CVEs too.

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2025-1009 vulnerability anywhere in the article.

  • The Cyber Express
CERT-In Warns of High-Severity Vulnerabilities in Mozilla Firefox and Thunderbird

The Indian Computer Emergency Response Team (CERT-In) has issued a vulnerability note (CIVN-2025-0016) highlighting a series of Mozilla vulnerability, including Firefox and Thunderbird. These vulnerab ... Read more

Published Date: Feb 10, 2025 (1 week, 4 days ago)

The following table lists the changes that have been made to the CVE-2025-1009 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]

    Feb. 06, 2025

    Action Type Old Value New Value
    Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
    Added CWE NIST CWE-416
    Added CPE Configuration OR *cpe:2.3:a:mozilla:firefox:*:*:*:*:esr:*:*:* versions up to (excluding) 115.20.0 *cpe:2.3:a:mozilla:firefox:*:*:*:*:esr:*:*:* versions from (including) 128.1.0 up to (excluding) 128.7.0 *cpe:2.3:a:mozilla:firefox:*:*:*:*:-:*:*:* versions up to (excluding) 135.0 *cpe:2.3:a:mozilla:thunderbird:*:*:*:*:esr:*:*:* versions from (including) 128.0.1 up to (excluding) 128.7.0 *cpe:2.3:a:mozilla:thunderbird:*:*:*:*:-:*:*:* versions from (including) 131.0 up to (excluding) 135.0
    Changed Reference Type https://bugzilla.mozilla.org/show_bug.cgi?id=1936613 No Types Assigned https://bugzilla.mozilla.org/show_bug.cgi?id=1936613 Permissions Required
    Changed Reference Type https://www.mozilla.org/security/advisories/mfsa2025-07/ No Types Assigned https://www.mozilla.org/security/advisories/mfsa2025-07/ Vendor Advisory
    Changed Reference Type https://www.mozilla.org/security/advisories/mfsa2025-08/ No Types Assigned https://www.mozilla.org/security/advisories/mfsa2025-08/ Vendor Advisory
    Changed Reference Type https://www.mozilla.org/security/advisories/mfsa2025-09/ No Types Assigned https://www.mozilla.org/security/advisories/mfsa2025-09/ Vendor Advisory
    Changed Reference Type https://www.mozilla.org/security/advisories/mfsa2025-10/ No Types Assigned https://www.mozilla.org/security/advisories/mfsa2025-10/ Vendor Advisory
    Changed Reference Type https://www.mozilla.org/security/advisories/mfsa2025-11/ No Types Assigned https://www.mozilla.org/security/advisories/mfsa2025-11/ Vendor Advisory
  • CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0

    Feb. 05, 2025

    Action Type Old Value New Value
    Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
    Added CWE CWE-416
  • New CVE Received by [email protected]

    Feb. 04, 2025

    Action Type Old Value New Value
    Added Description An attacker could have caused a use-after-free via crafted XSLT data, leading to a potentially exploitable crash. This vulnerability affects Firefox < 135, Firefox ESR < 115.20, Firefox ESR < 128.7, Thunderbird < 128.7, and Thunderbird < 135.
    Added Reference https://bugzilla.mozilla.org/show_bug.cgi?id=1936613
    Added Reference https://www.mozilla.org/security/advisories/mfsa2025-07/
    Added Reference https://www.mozilla.org/security/advisories/mfsa2025-08/
    Added Reference https://www.mozilla.org/security/advisories/mfsa2025-09/
    Added Reference https://www.mozilla.org/security/advisories/mfsa2025-10/
    Added Reference https://www.mozilla.org/security/advisories/mfsa2025-11/
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2025-1009 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-2025-1009 weaknesses.

CVSS31 - Vulnerability Scoring System
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability