CVE-2001-1421

MEDIUM 5.0CVE-2001-1421 · Published 06/10/2001 · updated 16/06/2026

In short

CVE-2001-1421 is a MEDIUM (CVSS 5.0) vulnerability affecting instant messenger (aol).
Chance of exploitation in the next 30 days (EPSS): 2.4%, higher than 84.2% of all vulnerabilities.
No patched version is listed yet: follow the vendor's advisory in References.

Package	Affected versions	Patched versions
instant messenger aol	`≤ 4.7`	No fix yet

Description

AOL Instant Messenger (AIM) 4.7 and earlier allows remote attackers to cause a denial of service (application crash) via a large number of different fonts followed by an HTML HR tag.

References

kb.cert.org/vuls/id/530299 · US Government Resource
kb.cert.org/vuls/id/JARL-569MD7 · US Government Resource
securityfocus.com/archive/1/218920 · Exploit
securityfocus.com/archive/1/247707
securityfocus.com/bid/3756
exchange.xforce.ibmcloud.com/vulnerabilities/7757

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Package

Affected versions

Patched versions

instant messenger

aol

≤ 4.7

No fix yet

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