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CVE-2024-4777 is an aggregate vulnerability covering multiple memory-safety defects in Firefox 125, Firefox ESR 115.10, and Thunderbird 115.10. Some defects exhibited evidence of memory corruption. Mozilla assessed that exploitation of some of the underlying flaws could potentially achieve arbitrary code execution with sufficient effort. The individual vulnerable components and precise memory-corruption primitives were not publicly specified.
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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.
20 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A memory safety vulnerability affecting Firefox 126, Firefox ESR 115.11, and Thunderbird 115.11.
A Mozilla memory safety vulnerability or set of memory safety bugs addressed in Firefox 126, Firefox ESR 115.11, and Thunderbird 115.11.
A memory safety vulnerability affecting Firefox 126, Firefox ESR 115.11, and Thunderbird 115.11.
A memory safety vulnerability or set of memory safety bugs fixed in Firefox 126, Firefox ESR 115.11, and Thunderbird 115.11.
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.