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Case File

CVE-2017-7801

CRITICAL · CVSS 9.8 EPSS 2.68% Public Exploit

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2018-06-11 · Last synced 2026-08-04

Field Assessment

AI analysis pending.

Exhibit — Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

Detected Signals
exploit

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2017-7801
Severity
CRITICAL
CVSS
9.8
EPSS
2.68%
Firefox

Original Filing — NVD Description

A use-after-free vulnerability can occur while re-computing layout for a "marquee" element during window resizing where the updated style object is freed while still in use. This results in a potentially exploitable crash. This vulnerability affects Thunderbird < 52.3, Firefox ESR < 52.3, and Firefox < 55.