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CVE-2026-100783 is an uninitialized-memory vulnerability in the Audio/Video component of Mozilla Firefox and Firefox ESR. The flaw is fixed in Firefox 157 and Firefox ESR 153.4, 140.17, and 115.42.
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No public exploits tracked yet. Mallory keeps watching.
No public exploit code observed for this vulnerability.
14 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A network-accessible vulnerability tracked as CVE-2026-100783 affecting identified Debian Linux releases and potentially the firefox-esr package. The supplied CVSS v3 vector indicates low attack complexity, no privileges required, user interaction required, and low availability impact; the plugin identifies systems as unpatched.
An uninitialized-memory vulnerability in Mozilla Firefox's Audio/Video component.
A vulnerability addressed by a Slackware Mozilla Firefox package update; no technical vulnerability details are provided.
A Mozilla Firefox ESR vulnerability referenced by the plugin; no technical details are provided.
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.