CVE-2006-4661: AOL ICQ Toolbar 1.3 for Internet Explorer (toolbaru.dll) does not properly validate the origin of the configur

Routine

LOW 2.6DOWNGRADE

CVE-2006-4661 is a low-severity flaw (CVSS 2.6) affecting icq toolbar. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

AOL ICQ Toolbar 1.3 for Internet Explorer (toolbaru.dll) does not properly validate the origin of the configuration web page (options2.html), which allows user-assisted remote attackers to provide a web page that contains disguised checkboxes that trick the user into reconfiguring the toolbar.

Why this priority

No elevated risk signals yet

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	2.6 (Low)
EPSS exploit chance	1.4% (top 28%)
CISA exploited list	No
Published	2006-09-09
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: icq inc

Last updated 2026-06-16 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2006-09-09 00:04 UTCPublished CVE record published
2026-06-16 22:29 UTCUpdated Record last modified

icq inc icq toolbar DOWNGRADE

Affected: 1.3_for_internet_explorer

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.3_for_internet_explorer

1. Check installed version

apt-cache policy icq-toolbar || rpm -q icq-toolbar || icq-toolbar --version

2. No fixed release: DOWNGRADE to a release before 1.3_for_internet_explorer (Debian / Ubuntu)

apt-cache madison icq-toolbar sudo apt install icq-toolbar=<VERSION_BEFORE_1.3_for_internet_explorer> sudo apt-mark hold icq-toolbar

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list icq-toolbar sudo dnf downgrade icq-toolbar-<VERSION_BEFORE_1.3_for_internet_explorer> sudo dnf versionlock add icq-toolbar

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2006-4661?

icq toolbar: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2006-4661 being exploited?

CVE-2006-4661 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2006-4661 affect?

CVE-2006-4661 affects icq toolbar. Severity is low (CVSS 2.6). AOL ICQ Toolbar 1.3 for Internet Explorer (toolbaru.dll) does not properly validate the origin of the configuration web page (options2.html), which allows user-assisted remote attackers to provide a web page that contains disguised checkbox

How urgent is CVE-2006-4661?

Priority 27/100. No elevated risk signals yet.

Software pages

Internet Explorer vulnerabilities

Related CVEs

CVE-2008-7136 MEDIUM 4.3 DOWNGRADE toolbaru.dll in ICQ Toolbar (ICQToolbar) 2.3 allows remote attackers to cause a denial of service (toolbar cra
CVE-2008-7135 MEDIUM 4.3 DOWNGRADE toolbaru.dll in ICQ Toolbar (ICQToolbar) 2.3 allows remote attackers to cause a denial of service (toolbar cra
CVE-2006-4660 MEDIUM 5.8 DOWNGRADE Multiple cross-site scripting (XSS) vulnerabilities in the RSS Feed module in AOL ICQ Toolbar 1.3 for Internet

References

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