Executive brief
Mozilla Firefox is a widely used web browser. Multiple memory safety vulnerabilities were identified that could potentially allow an attacker to corrupt the browser's memory. If successfully exploited, these flaws could enable an attacker to execute unauthorized code on a user's computer, potentially leading to data theft or full system compromise.
Technical details
This advisory covers a collection of memory safety bugs (CVE-2026-16411) identified in Firefox 152. The vulnerabilities include various memory corruption issues that Mozilla developers presume could be leveraged for arbitrary code execution given sufficient exploit development effort. The attack vector typically involves a user visiting a specially crafted malicious website (remote network delivery). The root causes are distributed across multiple browser components, as evidenced by the numerous associated Bugzilla entries. Users are advised to update to Firefox 153 or later to mitigate these risks.
Affected products
- Mozilla Firefox versions prior to 153
Timeline
- 2026-07-21: advisory: Mozilla Foundation Security Advisory 2026-68 published.
- 2026-07-21: patched: Fixed in Firefox version 153.
References
- https://bugzilla.mozilla.org/buglist.cgi?bug_id=1420800%2C1598946%2C1767921%2C2013993%2C2025417%2C2027325%2C2027364%2C2029433%2C2029807%2C2029901%2C2029922%2C2030102%2C2030563%2C2032110%2C2037801%2C2042756%2C2044625%2C2045609%2C2047920%2C2048491%2C2048492%2C2048800%2C2050534%2C2050662%2C2050871
- https://bugzilla.mozilla.org/buglist.cgi?bug_id=2006467%2C2027346%2C2027349%2C2027353%2C2027362%2C2027371%2C2027373%2C2028954%2C2029694%2C2036906%2C2038964%2C2039460%2C2040522%2C2040834%2C2043275%2C2045394%2C2045606%2C2052060
- https://bugzilla.mozilla.org/buglist.cgi?bug_id=2048936%2C2049804
- https://www.mozilla.org/security/advisories/mfsa2026-68/