CVE-2023-6858
CVSS 3.1 Score 8.8 of 10 (high)
Details
Summary
CVE-2023-6858 is a high severity vulnerability that affects Firefox ESR versions prior to 115.6, Thunderbird versions prior to 115.6, and Firefox versions prior to 121. The vulnerability is a heap buffer overflow in `nsTextFragment` due to insufficient OOM handling. It has a base score of 8.8 out of 10 and requires user interaction for exploitation. The impact includes high confidentiality and integrity impacts, with the potential for remote attackers to execute arbitrary code or cause a denial of service. To remediate the vulnerability, users should update their affected Firefox and Thunderbird versions to the recommended patches provided by Mozilla.
Prevent cyber attacks with Recorded Future by prioritizing and patching critical vulnerabilities being exploited by threat actors targeting your industry. Book your demo to learn more.
Advisories, Assessments, and Mitigations
Prioritize, Pinpoint, and Act to Prevent Vulnerability Exploits with Recorded Future
- Gain complete coverage of your cyber, third party, and physical attack surface
- Proactively mitigate threats before they turn into costly attacks
- Make fast, effective, data-driven decisions