CVE-2026-8973
HighCVSS 8.8Exploitation Probability (EPSS)
Low risk26th percentile - higher than 26% of all known CVEs
Summary
Memory safety bugs were present in Firefox 150. Some of these bugs showed evidence of memory corruption and could potentially be exploited to run arbitrary code with enough effort. The vulnerability was fixed in Firefox 151 and Thunderbird 151.
Risk Assessment
The organization is at risk of remote code execution, which could lead to data breaches or service disruption.
Recommendation
Immediately update Firefox to version 151 and Thunderbird to version 151 to remediate the vulnerability.
Original NVD description (English source)
Memory safety bugs present in Firefox 150. 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 151 and Thunderbird 151.