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CVE-2002-1643

80
FAUCET Score

CVE-2002-1643 describes multiple buffer overflow vulnerabilities in RealNetworks Helix Universal Server 9.0, specifically version 9.0.2.768. These flaws allow remote attackers to execute arbitrary code through specially crafted RTSP SETUP or DESCRIBE requests with long arguments, or by sending two simultaneous HTTP GET requests with lengthy parameters. With a CVSS score of 7.5, this vulnerability is considered highly severe, as it can be exploited remotely without authentication, potentially leading to complete compromise of confidentiality, integrity, and availability. While not listed on CISA's KEV catalog, multiple public exploit modules exist in Metasploit and ExploitDB, indicating readily available exploit code, though there is minimal community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
9.0CPE matchmatch criteria
cpe:2.3:a:realnetworks:helix_universal_server:9.0:*:*:*:*:*:*:*
9.0.2.768CPE matchmatch criteria
cpe:2.3:a:realnetworks:helix_universal_server:9.0.2.768:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

7.5HIGH

AV:N/AC:L/Au:N/C:P/I:P/A:P

Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
6.4
CvssVersion
2.0

Exploit Intelligence

EPSS Score
74.32%
Probability of exploitation in next 30 days
EPSS Percentile
99.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
Metasploit: RealServer Describe Buffer Overflow · Dec 20, 2002
ExploitDB: EDB-16286 · Aug 7, 2010
This CVE's current EPSS score of 0.7432 is in the 99th percentile among its peer group of 51,466 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

exchange.xforce.ibmcloud.com / vulnerabilities/10915
exchange.xforce.ibmcloud.com / vulnerabilities/10916
exchange.xforce.ibmcloud.com / vulnerabilities/10917
kb.cert.org / vuls/id/974689
PatchThird Party AdvisoryUS Government Resource
nextgenss.com / advisories/realhelix.txt
Vendor Advisory
securityfocus.com / archive/1/304203
Vendor Advisory
securityfocus.com / bid/6454
ExploitPatch
securityfocus.com / bid/6456
Patch
securityfocus.com / bid/6458
Patch
service.real.com / help/faq/security/bufferoverrun12192002.html
Patch