CVE-2023-6858
CVSS 3.1 Score 8.8 of 10 (high)
Details
Published Dec 19, 2023
Updated: Feb 2, 2024
CWE ID 787
Summary
CVE-2023-6858 is a heap buffer overflow vulnerability that affected Firefox ESR versions under 115.6, Thunderbird under 115.6, and Firefox versions under 121. The issue arose due to insufficient out-of-memory (OOM) handling in the `nsTextFragment` component. This vulnerability could be exploited by an attacker to execute arbitrary code or cause a denial of service, potentially leading to significant security risks. Users are recommended to update their browsers to the latest versions to mitigate this threat.
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