How severe is CVE-2004-0389?

CVE-2004-0389 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2004-0389 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 52% (99th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2004-0389?

CVE-2004-0389 primarily affects Realnetworks Helix Universal Server. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2004-0389?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2004-0389 published?

CVE-2004-0389 was published on 2004-06-01 and last updated on 2026-06-16.

CVE-2004-0389

CVE-2004-0389 is a high-severity vulnerability in Realnetworks Helix Universal Server with a CVSS 3.x base score of 7.5. Its EPSS exploit-prediction score of 52% places it in the 99th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-476.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 7.8
EPSS exploit prediction: 52% (99th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-476
Affected product: Realnetworks Helix Universal Server
Published: 2004-06-01
Last modified: 2026-06-16

Description

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.

Frequently asked questions

What is CVE-2004-0389?: 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.
How severe is CVE-2004-0389?: CVE-2004-0389 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2004-0389 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 52% (99th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2004-0389?: CVE-2004-0389 primarily affects Realnetworks Helix Universal Server. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2004-0389?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2004-0389 published?: CVE-2004-0389 was published on 2004-06-01 and last updated on 2026-06-16.

References

Affected products (2)

cpe:2.3:a:realnetworks:helix_universal_server:9.0.1:*:*:*:*:*:*:*
cpe:2.3:a:realnetworks:helix_universal_server:9.0.2:*:*:*:*:*:*:*

More vulnerabilities in Realnetworks Helix Universal Server

CVE-2004-0774 — High (CVSS 7.8): RealNetworks Helix Universal Server 9.0.2 for Linux and 9.0.3 for Windows allows remote attackers to cause a denial of…
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CVE-2002-1643 — High (CVSS 7.5): Multiple buffer overflows in RealNetworks Helix Universal Server 9.0 (9.0.2.768) allow remote attackers to execute…
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