CVE-2005-3433: Buffer overflow in Mirabilis ICQ 2003a allows user-assisted attackers to execute arbitrary code by convincing

Routine

MEDIUM 5.1DOWNGRADE

CVE-2005-3433 is a medium-severity flaw (CVSS 5.1) affecting icq. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Buffer overflow in Mirabilis ICQ 2003a allows user-assisted attackers to execute arbitrary code by convincing a user to enter long strings into the First Name and Last Name fields.

Why this priority

No elevated risk signals yet

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

Risk facts

CVSS score	5.1 (Medium)
EPSS exploit chance	1.4% (top 27%)
CISA exploited list	No
Published	2005-11-02
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: mirabilis

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

Am I affected?

Timeline

2005-11-02 11:02 UTCPublished CVE record published
2026-06-16 22:16 UTCUpdated Record last modified

mirabilis icq DOWNGRADE

Affected: 2002a_build3728 · 2003a_build3800

Fixed in: no fixed release known

Safe to downgrade to: a release before 2002a_build3728

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 2002a_build3728 (Debian / Ubuntu)

apt-cache madison icq sudo apt install icq=<VERSION_BEFORE_2002a_build3728> sudo apt-mark hold icq

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

dnf --showduplicates list icq sudo dnf downgrade icq-<VERSION_BEFORE_2002a_build3728> sudo dnf versionlock add icq

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-2005-3433?

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

Is CVE-2005-3433 being exploited?

CVE-2005-3433 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-2005-3433 affect?

CVE-2005-3433 affects icq. Severity is medium (CVSS 5.1). Buffer overflow in Mirabilis ICQ 2003a allows user-assisted attackers to execute arbitrary code by convincing a user to enter long strings into the First Name and Last Name fields.

How urgent is CVE-2005-3433?

Priority 36/100. No elevated risk signals yet.

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References

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