SB2025052751 - Multiple vulnerabilities in Mozilla Firefox 

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Main Vulnerability Database SB2025052751

SB2025052751 - Multiple vulnerabilities in Mozilla Firefox

Published: May 27, 2025 Updated: May 27, 2025

Security Bulletin ID SB2025052751
Severity
High
Patch available
YES
Number of vulnerabilities 11
Exploitation vector Remote access
Highest impact Code execution

Breakdown by Severity

High 36% Medium 36% Low 27%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 11 secuirty vulnerabilities.


1) Double free (CVE-ID: CVE-2025-5262)

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

The vulnerability exists due to a boundary error within the vpx_codec_enc_init_multi() function in libvpx encoder for WebRTC. A remote attacker can trick the victim into visiting a specially crafted website, trigger a double free error and execute arbitrary code on the target system.


2) Improper error handling (CVE-ID: CVE-2025-5263)

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

The vulnerability exists due to error handling for script execution is not correctly isolated from the web content. A remote attacker can trick the victim into opening a specially crafted website and obtain certain information cross-origin.



3) Input validation error (CVE-ID: CVE-2025-5264)

The vulnerability allows a remote attacker to compromise the affected system.

The vulnerability exists due to insufficient validation of user-supplied input within the "Copy as cURL" feature. A remote attacker can trick the victim into copying a specially crafted URL, trick the victim into using this command and execute arbitrary commands on the system.


4) Input validation error (CVE-ID: CVE-2025-5265)

The vulnerability allows a remote attacker to compromise the affected system.

The vulnerability exists due to insufficient validation of user-supplied input within the "Copy as cURL" feature. A remote attacker can trick the victim into copying a specially crafted URL, trick the victim into using this command and execute arbitrary commands on the system.

The vulnerability affects Windows installations only.


5) Buffer overflow (CVE-ID: CVE-2025-5272)

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.


6) Information disclosure (CVE-ID: CVE-2025-5266)

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

The vulnerability exists due to script elements loading cross-origin resources generated load and error events, which leaked information. A remote attacker can gain access to sensitive information.


7) Cleartext transmission of sensitive information (CVE-ID: CVE-2025-5270)

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

The vulnerability exists due to software does not always encrypt SNI even when encrypted DNS was enabled. A remote attacker with ability to intercept network traffic can gain access to sensitive data.


8) Protection Mechanism Failure (CVE-ID: CVE-2025-5271)

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

The vulnerability exists due to Devtools ignores CSP headers when previewing content. A remote attacker can perform content injection attacks.


9) Buffer overflow (CVE-ID: CVE-2025-5269)

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.


10) Buffer overflow (CVE-ID: CVE-2025-5268)

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.


11) Insufficient UI Warning of Dangerous Operations (CVE-ID: CVE-2025-5267)

The vulnerability allows a remote attacker to perform clickjacking attacks.

The vulnerability exists due to an error in the UI that can lead to information disclosure. A remote attacker can perform a clickjacking attack and trick a user into leaking saved payment card details to a malicious page.


Remediation

Install update from vendor's website.

References