Loading vulnerability…
CVE-2026-100759 is an uninitialized-memory vulnerability in Mozilla Firefox's Storage: Quota Manager component. Mozilla fixed the issue in Firefox 157, Firefox ESR 153.4, Firefox ESR 115.42, and Firefox ESR 140.17.
Mallory correlates every CVE against your assets, your vendors, and active adversary campaigns. Know which vulnerabilities matter for you, not just which ones are loud.
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.
14 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A critical network-reachable vulnerability affecting Debian Linux 12.0, 13.0, and 14.0, including systems with the firefox-esr package identified in the CPE data. The provided CVSS v3 vector indicates unauthenticated, low-complexity remote exploitation with no user interaction and high impact to confidentiality, integrity, and availability.
An uninitialized-memory vulnerability in Firefox's Storage: Quota Manager component.
A vulnerability addressed by a Slackware Mozilla Firefox package update; no technical vulnerability details are provided.
An uninitialized-memory vulnerability in Mozilla's Storage Quota Manager component.
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.