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CVE-2026-7322 is a bundled Mozilla vulnerability covering multiple memory safety bugs affecting Thunderbird ESR 140.10.0 and Thunderbird 150.0.0, with corresponding fixes also shipped in Firefox 150.0.1, Firefox ESR 140.10.1, and Firefox ESR 115.35.1. The issues are described as memory corruption-related defects, and Mozilla indicated that some showed evidence of memory corruption severe enough that, with sufficient effort, they could potentially be exploited for arbitrary code execution. The available information does not identify the individual vulnerable functions or root-cause variants beyond the general class of memory safety flaws.
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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.
15 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.