Is CVE-2004-0389 in the CISA KEV catalog?

No. CVE-2004-0389 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2004-0389?

CVE-2004-0389 has a CVSS v3 base score of 7.5 (HIGH).

What is the EPSS score for CVE-2004-0389?

CVE-2004-0389 has an EPSS score of 52.49% (99th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix or mitigate CVE-2004-0389?

No published fix for CVE-2004-0389 has been found yet. Check the linked vendor advisories for guidance as it becomes available.

CVE & CISA-KEV Catalog

CVE-2004-0389

HIGHEPSS 99th pctl

7.5

CVSS v3

NVD

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.

CWE-476NULL Pointer Dereference

How to fix

No published remediation has been found for this vulnerability's affected products yet.

Mitigation guidance may be in the linked vendor advisories in the References section below.

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CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityHigh

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Exploit Intelligence

52.49%probability of exploitation in 30 days

99thpercentile

Very high risk: more likely to be exploited than 99% of all known CVEs.

References

Patch1

idefense.com

Exploit1

securityfocus.com

Vendor Advisory1

secunia.com

Third-Party Advisory1

exchange.xforce.ibmcloud.com

Related Vulnerabilities

Other CWE-476 (NULL Pointer Dereference) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2023-21758	High	7.5	92%	-	Fix
CVE-2023-21547	High	7.5	88%	-	Fix
CVE-2014-3470	Medium	4.3	86%	-	Fix
CVE-2021-44224	High	8.2	82%	-	Fix
CVE-2016-0742	High	7.5	82%	-	Fix
CVE-2009-1386	Medium	5.0	80%	-	Fix

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-04-16.