CVE-2026-24869 is a high-severity use-after-free vulnerability affecting the Layout: Scrolling and Overflow component in Mozilla Firefox. This vulnerability allows attackers to exploit the flaw in versions prior to 147.0.2, which can lead to potential manipulation of memory and execution of arbitrary code. Given its high CVSS score of 8.8, organizations must recognize the potential impact of this vulnerability.
The vulnerability can be exploited remotely via network access, requiring user interaction to trigger the flaw. This means that while the attack complexity is low, it still necessitates some form of user engagement, making it a noteworthy concern for organizations utilizing affected versions of Firefox.
Risk to organizations includes the possibility of unauthorized access and control over affected systems, leading to potential data breaches and system instability. The urgency for defenders is critical, as the exploitability score indicates a significant risk of exploitation by malicious actors if unpatched.
Organizations should prioritize patching immediately to protect against this vulnerability, especially considering its presence in a widely used web browser.
Vulnerability Details
This vulnerability allows for a use-after-free condition in the Layout: Scrolling and Overflow component of Mozilla Firefox. The vulnerability is classified under CWE-416, which indicates an issue with memory management. It has a CVSS score of 8.8, categorizing it as high severity. The affected product is Mozilla Firefox, specifically all versions prior to 147.0.2. The CVE was published on January 27, 2026, and has been modified since its initial reporting.
Technical Analysis
The root cause of CVE-2026-24869 stems from a use-after-free vulnerability in the memory management of the Layout: Scrolling and Overflow component. This flaw allows attackers to exploit memory that has already been freed, potentially leading to arbitrary code execution.
The attack vector is network-based, requiring no privileges to execute the attack, but user interaction is necessary to trigger the vulnerability. The attack complexity is classified as low, indicating that an attacker can easily exploit this vulnerability under the right conditions.
The impacts on confidentiality, integrity, and availability are high, meaning that an attacker could compromise sensitive information, alter data, or disrupt services. Organizations should be vigilant in monitoring for signs of exploitation.
Risk & Impact Analysis
Real-world deployment risk for this vulnerability is significant due to the widespread use of Mozilla Firefox. Organizations that fail to address this vulnerability can face severe consequences, including data loss, unauthorized access, and damage to their reputation.
The potential blast radius of this vulnerability is considerable, impacting any user of the affected Firefox version. The urgency to remediate is elevated, as the CVSS score and the nature of the vulnerability indicate that active exploitation could lead to critical incidents.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
All versions of Mozilla Firefox prior to 147.0.2 are affected by this vulnerability. Organizations using these versions are strongly advised to apply the latest patches as soon as they are available.
Mitigation & Remediation
To mitigate this vulnerability, organizations should ensure that they upgrade to the latest version of Mozilla Firefox. Patching should be prioritized, and if immediate updates cannot be applied, consider implementing configuration hardening and network controls to limit exposure.
For detailed guidance on security measures, organizations may refer to the following resources on penetration testing and security best practices.
Detection Guidance
To detect potential exploitation of this vulnerability, organizations should monitor system logs for unusual memory access patterns and behavioral anomalies associated with the Layout: Scrolling and Overflow component.
Additionally, network signatures should be established to detect potential attempts to exploit this vulnerability.
AppSecure Threat Intelligence Insight
CVE-2026-24869 highlights the ongoing challenges associated with memory management vulnerabilities in widely used software. The increasing sophistication of cyber threats makes it essential for organizations to adopt proactive measures to secure their systems.
It is crucial for security teams to stay informed about vulnerability management practices. For further reading on effective measures, consider our resources on vulnerability management programs and the latest trends in penetration testing methodology to enhance your organization’s security posture.
Moreover, organizations should explore emerging threats and vulnerabilities to ensure comprehensive security. For insights into security assessments, refer to our guide on API penetration testing and other relevant practices.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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