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CVE-2025-14322 is a high-severity sandbox escape vulnerability in Mozilla Firefox and Thunderbird's Graphics: CanvasWebGL component. The flaw is described as resulting from incorrect boundary conditions, which can allow code executing in a more restricted browser context to break out of intended sandbox constraints. The issue affects Firefox versions prior to 146, Firefox ESR prior to 115.31 and 140.6, Thunderbird prior to 146, and Thunderbird prior to 140.6. Available supporting content also associates the issue with memory corruption and notes remote exploitability with user interaction.
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No public exploit code observed for this vulnerability.
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Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
17 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A sandbox escape vulnerability in the Graphics: CanvasWebGL component of Firefox, caused by incorrect boundary conditions. Allows remote attackers to escape the browser sandbox and potentially execute code with elevated privileges. Rated high severity (CVSS 8.0).
A sandbox escape vulnerability in the Graphics component of Mozilla products, potentially allowing privilege escalation or code execution outside the browser sandbox.
A sandbox escape vulnerability in the Graphics: CanvasWebGL component of Firefox due to incorrect boundary conditions, potentially allowing attackers to break out of the browser sandbox.
A sandbox escape vulnerability in the Graphics: CanvasWebGL component of Firefox ESR, potentially allowing attackers to break out of the browser sandbox.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.