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Case File

CVE-2009-1834

MEDIUM · CVSS 4.3 EPSS 3.23%

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2009-06-12 · 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-2009-1834
Severity
MEDIUM
CVSS
4.3
EPSS
3.23%
Firefox

Original NVD Description

Visual truncation vulnerability in netwerk/dns/src/nsIDNService.cpp in Mozilla Firefox before 3.0.11 and SeaMonkey before 1.1.17 allows remote attackers to spoof the location bar via an IDN with invalid Unicode characters that are displayed as whitespace, as demonstrated by the \u115A through \u115E characters.