CVE-2003-0725Helix Universal Server Vulnerability
Buffer overflow in the RTSP protocol parser for the View Source plug-in (vsrcplin.so or vsrcplin3260.dll) for RealNetworks Helix Universal Server 9 and RealSystem Server 8, 7 and RealServer G2 allows remote attackers to execute arbitrary code.
Published Oct 20, 2003 · Updated Apr 15, 2026
Key Facts
Patch immediately- CVE-2003-0725 is a high-severity vulnerability (CVSS 7.5 v2) affecting Helix Universal Server (Realnetworks), Realserver (Realnetworks).
- It is not listed in any known-exploited vulnerabilities catalog. Public exploit code is available.
- EPSS estimates a 49% probability of exploitation in the next 30 days.
- No fixed version is listed yet; check the vendor advisory for mitigations.
- Brandefense priority: patch immediately, because public exploit code exists for a high-severity flaw.
Scores
CVSS v2
7.5
AV:N/AC:L/Au:N/C:P/I:P/A:P
EPSS (30-day exploit likelihood)
49%
Higher than 98.8% of all scored CVEs
Exploit maturity
Proof of concept
ATLAS score
42/100
Publication score, see How it works
Exploitation Verdict
KEV listed
Not listed
Federal due date
None
No federal due date
Ransomware use
Not reported
Attributed actors
None named
Exploit & Defence Guidance
Exploit maturity
Proof of concept
Public exploit code
1
Proof-of-concept links
In-the-wild evidence
0
Reports of active use
Advisories And Exploit References
- advisory20030825 New Bug in RealServer
- advisoryVU#934932
- patch8476
Description
Buffer overflow in the RTSP protocol parser for the View Source plug-in (vsrcplin.so or vsrcplin3260.dll) for RealNetworks Helix Universal Server 9 and RealSystem Server 8, 7 and RealServer G2 allows remote attackers to execute arbitrary code.
Affected Products
12 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| Helix Universal ServerRealnetworks | 8.0.1, 9.0, 9.0.1, 9.0.2.794 | n/a |
| RealserverRealnetworks | 7.0, 7.0.1, 7.0.2, 8.0, 8.0.1, 8.0.2, 8.0_beta, g2_1.0 | n/a |
Timeline
Publicly disclosed
Oct 20, 2003
Last updated
Apr 15, 2026
References
- advisory20030825 New Bug in RealServer
- advisoryVU#934932
- patch8476
- exploitExploitDB-86
- otherlists.immunitysec.com · 000030.html
FAQ
Common Questions.
Buffer overflow in the RTSP protocol parser for the View Source plug-in (vsrcplin.so or vsrcplin3260.dll) for RealNetworks Helix Universal Server 9 and RealSystem Server 8, 7 and RealServer G2 allows remote attackers to execute arbitrary code.
Affected: Helix Universal Server (Realnetworks) versions 8.0.1, 9.0, 9.0.1, 9.0.2.794; Realserver (Realnetworks) versions 7.0, 7.0.1, 7.0.2, 8.0, 8.0.1, 8.0.2, 8.0_beta, g2_1.0. The full list is in the CVE brief.
It is not listed in any known-exploited vulnerabilities catalog.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
Public exploit code is available.
No fixed version is listed yet; check the vendor advisory for mitigations.
Brandefense priority: patch immediately, because public exploit code exists for a high-severity flaw.
Is CVE-2003-0725 On Your Attack Surface?
Brandefense matches it against the products discovered on your perimeter and opens a finding the day a CVE like this is listed.
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