CVE-2026-14241
Memory safety bugs in Firefox could allow arbitrary code execution.
Is CVE-2026-14241 being exploited?
Not confirmed. CVE-2026-14241 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 0.43% probability of exploitation in the next 30 days.
How severe is CVE-2026-14241?
CVE-2026-14241 is rated Critical with a CVSS score of 9.8. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-14241?
Yes. A fix has been recorded for CVE-2026-14241. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-14241 affect?
CVE-2026-14241 affects Mozilla Firefox. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-14241?
Update to Firefox 152.0.4 or later
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Arbitrary code execution via memory corruption in Firefox client.
Patch when possible