CVE-2004-0389

Exp

RealNetworks Helix Universal Server 9.0.1 and 9.0.2 allows remote attackers to cause a denial of service (crash) via malformed requests that trigger a null dereference, as demonstrated using (1) GET_PARAMETER or (2) DESCRIBE requests.

Published: 2004-06-01 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2004-0389 is rated High Exploit Risk (84.6/100): CVSS High severity, with high exploitation likelihood (EPSS 52.49%, 99th percentile). 3 public exploit reference(s) are indexed (Exploit-DB). EPSS rose +44.43% over the last day, indicating growing attacker interest. Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Public exploit references (Exploit-DB) for CVE-2004-0389

EDB-ID Source Kind Published Link
24010 exploit_db edb 2004-04-15 Exploit-DB ↗
— nvd_ref exploit_tag Exploit-DB ↗
— nvd_ref exploit_tag Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2004-0389

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 8.06% 52.49% +44.43%
2 2025-03-30 8.41% 8.06% -0.35%
3 2025-03-29 — 8.41% —

Full EPSS history (11 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2004-0389

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.5 3.1 HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 3.9 3.6 [email protected]
7.8 2.0 HIGH
AV:N/AC:L/Au:N/C:N/I:N/A:C Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:N)
No confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:C)
Complete availability impact.
 10.0 6.9 [email protected]

Weakness enumeration for CVE-2004-0389

Affected software / configurations for CVE-2004-0389

Vendor Product Version Raw CPE
realnetworks helix_universal_server 9.0.1 cpe:2.3:a:realnetworks:helix_universal_server:9.0.1:*:*:*:*:*:*:*
realnetworks helix_universal_server 9.0.2 cpe:2.3:a:realnetworks:helix_universal_server:9.0.2:*:*:*:*:*:*:*

References for CVE-2004-0389

URL Tags
http://secunia.com/advisories/11395 Broken Link Vendor Advisory
http://www.idefense.com/application/poi/display?id=102&type=vulnerabilities Broken Link Exploit Patch Vendor Advisory
http://www.securityfocus.com/bid/10157 Broken Link Exploit Third Party Advisory VDB Entry
https://exchange.xforce.ibmcloud.com/vulnerabilities/15880 Third Party Advisory VDB Entry
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