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CVE-2026-92075 is a low-impact mitigation-bypass vulnerability in Mozilla Firefox's Networking component. Technical details describing the defective code path, affected mitigation, and attack method are not currently available. Mozilla fixed the issue in Firefox 156, Firefox ESR 153.3, Thunderbird 156, and Thunderbird 153.3.
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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.
18 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A vulnerability covered by the Mozilla Thunderbird 156.0 update; no individual technical details are provided.
A vulnerability referenced in the Mozilla Thunderbird 156.0 security advisory; no technical details are provided.
A critical network-reachable vulnerability, published September 15, 2026, with low attack complexity and no required privileges or user interaction. The supplied CVSS v3 vector indicates potential high impact to confidentiality, integrity, and availability. The content associates it with supported Ubuntu LTS releases and lists mozjs package versions and Thunderbird in CPE information, but does not describe the underlying technical flaw.
A vulnerability referenced by the Thunderbird 153.3 security update; no technical details are provided in the content.
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.