SB2025091769 - Multiple vulnerabilities in Mozilla Firefox 

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Main Vulnerability Database SB2025091769

SB2025091769 - Multiple vulnerabilities in Mozilla Firefox

Published: September 17, 2025

Security Bulletin ID SB2025091769
Severity
High
Patch available
YES
Number of vulnerabilities 11
Exploitation vector Remote access
Highest impact Code execution

Breakdown by Severity

High 36% Medium 45% Low 18%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 11 secuirty vulnerabilities.


1) Use-after-free (CVE-ID: CVE-2025-10527)

The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to a use-after-free error in Graphics: Canvas2D component. A remote attacker can trick the victim into visiting a specially crafted website and execute arbitrary code on the system.

Successful exploitation of the vulnerability may allow an attacker to compromise vulnerable system.


2) Buffer overflow (CVE-ID: CVE-2025-10528)

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error in Graphics: Canvas2D component. A remote attacker can trick the victim into visiting a specially crafted website, trigger memory corruption and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.


3) Security features bypass (CVE-ID: CVE-2025-10529)

The vulnerability allows a remote attacker to bypass implemented security restrictions.

The vulnerability exists due to an error in the Layout component. A remote attacker can bypass same-origin policy and gain unauthorized access to data outside of the current domain. 


4) Out-of-bounds read (CVE-ID: CVE-2025-10532)

The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to a boundary condition in the JavaScript: GC component. A remote attacker can create a specially crafted website, trick the victim into opening it, trigger an out-of-bounds read error and read contents of memory on the system.


5) Integer overflow (CVE-ID: CVE-2025-10533)

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to integer overflow within the SVG component. A remote attacker can trick the victim into visiting a specially crafted website, trigger an integer overflow and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.


6) Information disclosure (CVE-ID: CVE-2025-10536)

The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to excessive data output by the Networking: Cache component. A remote attacker can gain unauthorized access to sensitive information on the system.


7) Buffer overflow (CVE-ID: CVE-2025-10537)

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error when processing HTML content. A remote attacker can create a specially crafted website, trick the victim into opening it, trigger memory corruption and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.


8) Spoofing attack (CVE-ID: CVE-2025-10530)

The vulnerability allows a remote attacker to perform spoofing attack.

The vulnerability exists due to incorrect processing of user-supplied data in the WebAuthn component. A remote attacker can spoof page content.


9) Security features bypass (CVE-ID: CVE-2025-10531)

The vulnerability allows a remote attacker to bypass implemented security restrictions.

The vulnerability exists die to an error in the Web Compatibility: Tooling component. A remote attacker can bypass implemented security restrictions. 


10) Spoofing attack (CVE-ID: CVE-2025-10534)

The vulnerability allows a remote attacker to perform spoofing attack.

The vulnerability exists due to incorrect processing of user-supplied data in the Site Permissions component. A remote attacker can perform a spoofing attack.


11) Information disclosure (CVE-ID: CVE-2025-10535)

The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to excessive data output in the Privacy component. A remote attacker can gain unauthorized access to sensitive information on the system.


Remediation

Install update from vendor's website.

References