CVE-2026-2807
CriticalCVSS 9.8Exploitation Probability (EPSS)
Low risk16th percentile - higher than 16% of all known CVEs
Summary
Memory safety bugs were found in Firefox 147 and Thunderbird 147. Some of these bugs showed evidence of memory corruption and could potentially be exploited to run arbitrary code. The vulnerabilities were fixed in Firefox 148 and Thunderbird 148.
Risk Assessment
The organization is at risk of remote code execution by an attacker, which could lead to system compromise, data theft, or lateral movement within the network.
Recommendation
Immediately update Firefox to version 148 and Thunderbird to version 148. Ensure the updates are deployed on all workstations.
Original NVD description (English source)
Memory safety bugs present in Firefox 147 and Thunderbird 147. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability was fixed in Firefox 148 and Thunderbird 148.