CVE-2026-24868 is a vulnerability identified in Mozilla Firefox's Privacy: Anti-Tracking component affecting versions prior to 147.0.2. The issue is classified under CWE-693, indicating an improper protection mechanism that can be bypassed. Specifically, this vulnerability allows an attacker to circumvent the browser's anti-tracking mitigations, which are designed to prevent websites and third parties from tracking user activity across the web. The CVSS v3.1 score of 7.5 (high) reflects that the attack vector is network-based (AV:N), requires no privileges (PR:N), and no user interaction (UI:N), making it relatively easy to exploit remotely. The impact is primarily on integrity (I:H), meaning the attacker can alter or bypass privacy protections, but confidentiality and availability remain unaffected. No known exploits have been reported in the wild, and no official patches have been linked yet, though the vulnerability is publicly disclosed and assigned by Mozilla. This vulnerability poses a significant risk to user privacy by potentially allowing tracking mechanisms that the anti-tracking feature was meant to block. Organizations using Firefox as a primary browser for sensitive or privacy-critical operations are at risk of exposure to tracking or profiling attacks if they do not update promptly.

For European organizations, this vulnerability undermines the privacy guarantees provided by Firefox's anti-tracking features, potentially exposing users to unauthorized tracking and profiling by malicious actors or third parties. This can lead to privacy violations, regulatory non-compliance (e.g., GDPR), and reputational damage. Sectors such as finance, healthcare, and government, which rely heavily on privacy protections, are particularly vulnerable. The ease of remote exploitation without user interaction increases the risk of widespread abuse. While the vulnerability does not directly compromise data confidentiality or system availability, the erosion of privacy controls can facilitate more targeted attacks or surveillance. Organizations may face increased scrutiny from regulators if user privacy is compromised due to unpatched browsers. Additionally, the lack of current exploits in the wild provides a window for proactive mitigation before active exploitation occurs.

1. Immediately plan to update all Firefox installations to version 147.0.2 or later once Mozilla releases the patch. 2. Until the patch is available, consider deploying network-level protections such as web filtering or intrusion detection systems to monitor and block suspicious traffic targeting Firefox clients. 3. Educate users about the importance of applying browser updates promptly and avoiding untrusted websites that might attempt to exploit this vulnerability. 4. Configure Firefox privacy settings to enhance tracking protection, including enabling strict tracking prevention modes and disabling third-party cookies. 5. Employ endpoint security solutions that can detect anomalous browser behavior indicative of exploitation attempts. 6. Monitor Mozilla security advisories and CVE databases for updates or proof-of-concept exploit releases. 7. For organizations with strict privacy requirements, consider using additional privacy-focused browser extensions or alternative browsers with robust anti-tracking features until the vulnerability is resolved. 8. Conduct internal audits to identify Firefox usage across the organization and prioritize patch deployment accordingly.