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CVE-2026-5733 is an incorrect boundary conditions vulnerability in the Graphics: WebGPU component of Mozilla Firefox and Mozilla Thunderbird. The flaw affects Firefox versions earlier than 149.0.2 and was fixed in Firefox 149.0.2 and Thunderbird 149.0.2. The available information indicates improper bounds handling within WebGPU processing, creating a memory-safety condition consistent with CWE-119. Mozilla-associated severity metadata indicates the issue may be exploitable in a browser context with user interaction.
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What an attacker gets, and what they’ve been doing with it.
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Patch, then assume compromise.
No valid public exploits. Mallory filtered out 1 candidate as fakes, detection scripts, or README-only repos.
All candidate exploits were filtered out by Mallory's validation.
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.
3 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
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.