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CVE-2025-14322 is a sandbox escape vulnerability in the Graphics: CanvasWebGL component of Mozilla Firefox and Firefox ESR caused by incorrect boundary conditions. The flaw allows crafted web content processed through CanvasWebGL to cross intended browser sandbox boundaries. The issue affects Firefox before 146 and Firefox ESR before 115.31 and 140.6. Mozilla also fixed the issue in corresponding Thunderbird releases that incorporate the affected code. The vulnerability is associated with memory corruption conditions and a changed scope, indicating that exploitation can break out of the constrained rendering context into a more privileged execution context.
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What an attacker gets, and what they’ve been doing with it.
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No public exploit code observed for this vulnerability.
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
19 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.