CVE-2004-0774

RealNetworks Helix Universal Server 9.0.2 for Linux and 9.0.3 for Windows allows remote attackers to cause a denial of service (CPU and memory exhaustion) via a POST request with a Content-Length header set to -1.

Published: 2004-11-03 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2004-0774 is rated Moderate Risk (59.5/100): CVSS High severity, with medium exploitation likelihood (EPSS 1.92%). EPSS rose +1.24% over the last day, indicating growing attacker interest. Review affected assets and schedule remediation.

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

Exploit prediction scoring system (EPSS) score for CVE-2004-0774

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 0.68% 1.92% +1.24%
2 2025-03-30 0.59% 0.68% +0.09%
3 2025-03-29 — 0.59% —

Full EPSS history (6 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2004-0774

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
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-2004-0774

Affected software / configurations for CVE-2004-0774

Vendor Product Version Raw CPE
realnetworks helix_universal_mobile_server_and_gateway <= 10.3.1.716 cpe:2.3:a:realnetworks:helix_universal_mobile_server_and_gateway:*:*:*:*:*:*:*:*
realnetworks helix_universal_server <= 9.0.4.958 cpe:2.3:a:realnetworks:helix_universal_server:*:*:*:*:*:*:*:*
realnetworks helix_universal_server 9.0.2 cpe:2.3:a:realnetworks:helix_universal_server:9.0.2:*:*:*:*:*:*:*

References for CVE-2004-0774

cvelogic Threat Intelligence