CyberRota Analysis
This is a critical severity vulnerability with a CVSS score of 9.8. It affects Firefox. Public exploit code or proof-of-concept references have been detected in its references.
Public Exploit Signal
A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.
Detected Signals
exploit
Note: these links are listed for security research and verification purposes only.
CVE
CVE-2026-4729
Severity
CRITICAL
CVSS
9.8
EPSS
0.33%
Firefox
Original NVD Description
Memory safety bugs present in Firefox 148 and Thunderbird 148. 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 149 and Thunderbird 149.
Related CVEs
Other vulnerabilities affecting the same vendor(s)