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CVE-2009-0652

The Internationalized Domain Names (IDN) blacklist in Mozilla Firefox 3.0.6 and other versions before 3.0.9; Thunderbird before 2.0.0.21;…

Medium5.8EPSS 1.5%
Published
Updated
Reserved
Assigned by
mitre

Description

The Internationalized Domain Names (IDN) blacklist in Mozilla Firefox 3.0.6 and other versions before 3.0.9; Thunderbird before 2.0.0.21; and SeaMonkey before 1.1.15 does not include box-drawing characters, which allows remote attackers to spoof URLs and conduct phishing attacks, as demonstrated by homoglyphs of the / (slash) and ? (question mark) characters in a subdomain of a .cn domain name, a different vulnerability than CVE-2005-0233. NOTE: some third parties claim that 3.0.6 is not affected, but much older versions perhaps are affected.

Scores

CVSS scores of CVE-2009-0652, by who scored it
Scored byCVSSScoreVector
NVDNVD · Modified2.0Medium5.8AV:N/AC:M/Au:N/C:N/I:P/A:P
EPSS (exploitation in 30 days)
1.5% · top 26% of all CVEs (3 Nov 2026)
Loading the EPSS history…

The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.8.

Weakness

  • n/a

Affected products

  • n/a

    • affected n/a

References (23)

Sources

The same CVE in the primary databases and aggregators, to check against.

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Record last updated .