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CVE-2026-16411 is a collection of memory safety bugs affecting Firefox 152. Mozilla reported that some of these issues showed evidence of memory corruption and assessed that, with sufficient effort, some could potentially be exploited for arbitrary code execution. The available information does not identify the specific vulnerable functions or subsystems, but the issue class is consistent with improper memory handling in browser code. The vulnerabilities were addressed in Firefox 153 and Thunderbird 153.
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What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.
What an attacker gets, and what they’ve been doing with it.
If you can’t patch tonight, do this now.
Patch, then assume compromise.
No public exploits tracked yet. Mallory keeps watching.
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.
8 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
Memory-safety vulnerability addressed in Firefox 153; the article indicates many fixes were associated with this CVE and notes that some memory-management flaws could potentially lead to code execution.
A specific vulnerability identifier mentioned in the Firefox 153 security fixes summary; the content provides only counts of related fixes and no technical description of the flaw itself.
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.