CVE-2002-1643

CVE-2002-1643 is a high-severity vulnerability in Realnetworks Helix Universal Server with a CVSS 2.0 base score of 7.5. Its EPSS exploit-prediction score of 74% places it in the 99th percentile, indicating an elevated likelihood of exploitation.

Key facts

Description

Multiple buffer overflows in RealNetworks Helix Universal Server 9.0 (9.0.2.768) allow remote attackers to execute arbitrary code via (1) a long Transport field in a SETUP RTSP request, (2) a DESCRIBE RTSP request with a long URL argument, or (3) two simultaneous HTTP GET requests with long arguments.

Frequently asked questions

What is CVE-2002-1643?
Multiple buffer overflows in RealNetworks Helix Universal Server 9.0 (9.0.2.768) allow remote attackers to execute arbitrary code via (1) a long Transport field in a SETUP RTSP request, (2) a DESCRIBE RTSP request with a long URL argument, or (3) two simultaneous HTTP GET requests with long arguments.
How severe is CVE-2002-1643?
CVE-2002-1643 has a CVSS 2.0 base score of 7.5, rated high severity.
Is CVE-2002-1643 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 74% (99th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2002-1643?
CVE-2002-1643 primarily affects Realnetworks Helix Universal Server. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2002-1643?
Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2002-1643 published?
CVE-2002-1643 was published on 2002-12-19 and last updated on 2026-06-16.

References

Affected products (2)

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