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-2025-11721
Severity
CRITICAL
CVSS
9.8
EPSS
0.34%
Firefox
Original NVD Description
Memory safety bug present in Firefox 143 and Thunderbird 143. This bug showed evidence of memory corruption and we presume that with enough effort this could have been exploited to run arbitrary code. This vulnerability was fixed in Firefox 144 and Thunderbird 144.
Related CVEs
Other vulnerabilities affecting the same vendor(s)