Loading vulnerability…
CVE-2026-100775 is a sandbox-escape vulnerability in the Graphics component of Mozilla Firefox. The flaw can allow an attacker to break out of the browser sandbox, weakening the isolation boundary between browser content and more privileged processes. Fixed releases are Firefox 157, Firefox ESR 153.4, Firefox ESR 140.17, and Firefox ESR 115.42.
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, remotely exploitable vulnerability tracked as CVE-2026-100775 affecting Debian Linux 12.0, 13.0, and 14.0, including the firefox-esr package. The supplied CVSS v3 vector indicates network access, low attack complexity, no privileges or user interaction required, and high confidentiality, integrity, and availability impact.
A sandbox-escape vulnerability in Firefox's Graphics component, addressed in Firefox 157 and the specified Firefox ESR releases.
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.