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Case File

CVE-2008-4066

MEDIUM · CVSS 4.3 EPSS 1.76%

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2008-09-24 · Last synced 2026-08-04

CyberRota Analysis

This is a medium severity vulnerability with a CVSS score of 4.3. It affects Firefox. It may be remotely exploitable.

CVE
CVE-2008-4066
Severity
MEDIUM
CVSS
4.3
EPSS
1.76%
Firefox

Original NVD Description

Mozilla Firefox 2.0.0.14, and other versions before 2.0.0.17, allows remote attackers to bypass cross-site scripting (XSS) protection mechanisms and conduct XSS attacks via HTML-escaped low surrogate characters that are ignored by the HTML parser, as demonstrated by a "jav&#56325ascript" sequence, aka "HTML escaped low surrogates bug."