How severe is CVE-2006-3276?

CVE-2006-3276 has a CVSS 2.0 base score of 7.5, rated high severity.

Is CVE-2006-3276 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 14% (96th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2006-3276?

CVE-2006-3276 primarily affects Realnetworks Helix Dna 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-2006-3276?

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-2006-3276 published?

CVE-2006-3276 was published on 2006-06-28 and last updated on 2026-06-16.

CVE-2006-3276

CVE-2006-3276 is a high-severity vulnerability in Realnetworks Helix Dna Server with a CVSS 2.0 base score of 7.5. Its EPSS exploit-prediction score of 14% places it in the 96th percentile, indicating an elevated likelihood of exploitation.

Key facts

Severity: High (CVSS 2.0 base score 7.5)
EPSS exploit prediction: 14% (96th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Realnetworks Helix Dna Server
Published: 2006-06-28
Last modified: 2026-06-16

Description

Heap-based buffer overflow in RealNetworks Helix DNA Server 10.0 and 11.0 allows remote attackers to execute arbitrary code via (1) a long User-Agent HTTP header in the RTSP service and (2) unspecified vectors involving the "parsing of HTTP URL schemes".

Frequently asked questions

What is CVE-2006-3276?: Heap-based buffer overflow in RealNetworks Helix DNA Server 10.0 and 11.0 allows remote attackers to execute arbitrary code via (1) a long User-Agent HTTP header in the RTSP service and (2) unspecified vectors involving the "parsing of HTTP URL schemes".
How severe is CVE-2006-3276?: CVE-2006-3276 has a CVSS 2.0 base score of 7.5, rated high severity.
Is CVE-2006-3276 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 14% (96th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2006-3276?: CVE-2006-3276 primarily affects Realnetworks Helix Dna 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-2006-3276?: 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-2006-3276 published?: CVE-2006-3276 was published on 2006-06-28 and last updated on 2026-06-16.

References

Affected products (2)

cpe:2.3:a:realnetworks:helix_dna_server:10.0:*:*:*:*:*:*:*
cpe:2.3:a:realnetworks:helix_dna_server:11.0:*:*:*:*:*:*:*

More vulnerabilities in Realnetworks Helix Dna Server

CVE-2007-4561 — Critical (CVSS 10.0): Heap-based buffer overflow in the RTSP service in Helix DNA Server before 11.1.4 allows remote attackers to execute…
CVE-2006-6026 — Critical (CVSS 10.0): Heap-based buffer overflow in Real Networks Helix Server and Helix Mobile Server before 11.1.3, and Helix DNA Server…
CVE-2010-1317 — High (CVSS 7.5): Heap-based buffer overflow in the NTLM authentication functionality in RealNetworks Helix Server and Helix Mobile…

All CVEs affecting Realnetworks Helix Dna Server →