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CVE-2025-49709 — Certain canvas operations could have lead to memory corruption.

Mozilla · Firefox · Published 11 Jun 2025 · Modified 30 Sept 2026

Description

Certain canvas operations could have lead to memory corruption. This vulnerability was fixed in Firefox 139.0.4.

References

What to do
  1. Check whether Firefox is in your asset inventory.
  2. Patch in the next maintenance window; prioritise internet-facing systems.
  3. Record the decision in your risk register for audit evidence.
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Link: adminadda.com/cve/CVE-2025-49709