Out-of-Bounds Access Vulnerability in Firefox by Mozilla

CVE-2025-1932

What is CVE-2025-1932?

CVE-2025-1932 is a vulnerability identified in the Mozilla Firefox and Thunderbird applications, which are widely used for web browsing and email communication respectively. This flaw arises from an inconsistency in a comparator function within the software, potentially leading to out-of-bounds access. Such a vulnerability can allow attackers to manipulate memory, resulting in unauthorized access to sensitive data or even unintended software behaviors. As Firefox and Thunderbird are integral tools for many organizations, the presence of this vulnerability could jeopardize data integrity and user privacy.

Technical Details

The vulnerability is specifically located in the xslt/txNodeSorter component of Firefox and Thunderbird. It affects versions prior to 136 for Firefox and prior to 136 and ESR 128.8 for Thunderbird, as well as matching versions for Thunderbird. The inconsistent comparator could be exploited to gain access to regions of memory not properly allocated, which may compromise the stability and security of the software.

Potential Impact of CVE-2025-1932

1. Data Integrity Risks: Exploitation of this vulnerability may allow attackers to manipulate sensitive data or configurations, leading to potential data breaches or loss.

2. System Instability: Out-of-bounds access could result in crashes or erratic behavior of the application, affecting productivity and reliability for users and organizations dependent on these tools.

3. Increased Attack Surface: Organizations using vulnerable versions of Firefox and Thunderbird may become additional targets for cyber threats, as attackers could leverage this flaw to execute further malicious actions or propagate other security incidents.

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