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Fencer Vulns
high 7.5

CVE-2002-1643 in the critical feed json

Multiple buffer overflows in RealNetworks Helix Universal Server 9.0 (9.0.2.768) allow remote attackers to execute arbitrary code via (1) a…

published 2002-12-19 23 y ago modified 2026-06-16 4 mo ago also EUVD-2002-1624

cvss
7.5
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
74.7%
EPSS 74.7% chance of exploitation in 30 days, percentile 99.5%
public exploits
4
Metasploit, Exploit-DB

Summary

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.

Patch / fix

Timeline

  1. Published
  2. First public exploit (Metasploit exploit/multi/realserver/describe)

Exploit prediction

74.70% chance of exploitation in the next 30 days, higher than 99.5% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • Metasploit exploit/multi/realserver/describe RealServer Describe Buffer Overflow metasploit exploit, great rank, 2002-12-20
  • EDB-16286 RealServer - Describe Buffer Overflow (Metasploit) remote, 2010-08-07
  • EDB-9937 RealServer 7-9 - Describe Buffer Overflow (Metasploit) remote, 2002-12-20
  • EDB-23 RealServer < 8.0.2 (Windows Platforms) - Remote Overflow remote, 2003-04-30
  • securityfocus.com http://www.securityfocus.com/bid/6454 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 2.0 7.5 AV:N/AC:L/Au:N/C:P/I:P/A:P

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.