CVE-1999-1342: ICQ ActiveList Server allows remote attackers to cause a denial of service (crash) via malformed packets to th

Routine

MEDIUM 5.0MITIGATE

CVE-1999-1342 is a medium-severity flaw (CVSS 5.0) affecting activelist server. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

ICQ ActiveList Server allows remote attackers to cause a denial of service (crash) via malformed packets to the server's UDP port.

Why this priority

No elevated risk signals yet

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

Risk facts

CVSS score	5.0 (Medium)
EPSS exploit chance	1.3% (top 30%)
CISA exploited list	No
Published	1999-10-17
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: icq

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

Am I affected?

Timeline

1999-10-17 04:00 UTCPublished CVE record published
2026-06-16 21:50 UTCUpdated Record last modified

icq activelist server MITIGATE

Affected: all versions

Fixed in: no fixed release known

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy activelist-server || rpm -q activelist-server || activelist-server --version

No fixed or unaffected release known

Apply the vendor mitigation from the advisory, disable the affected feature, or restrict network access.

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-1999-1342?

activelist server: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-1999-1342 being exploited?

CVE-1999-1342 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-1999-1342 affect?

CVE-1999-1342 affects activelist server. Severity is medium (CVSS 5.0). ICQ ActiveList Server allows remote attackers to cause a denial of service (crash) via malformed packets to the server's UDP port.

How urgent is CVE-1999-1342?

Priority 35/100. No elevated risk signals yet.

References

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