How severe is CVE-2006-0323?

CVE-2006-0323 has a CVSS 2.0 base score of 9.3, rated critical severity.

Is CVE-2006-0323 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 17% (97th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2006-0323?

CVE-2006-0323 primarily affects Realnetworks Helix Player. In total, 6 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2006-0323?

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

When was CVE-2006-0323 published?

CVE-2006-0323 was published on 2006-03-23 and last updated on 2026-06-16.

CVE-2006-0323

CVE-2006-0323 is a critical-severity vulnerability in Realnetworks Helix Player with a CVSS 2.0 base score of 9.3. Its EPSS exploit-prediction score of 17% places it in the 97th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-119.

Key facts

Severity: Critical (CVSS 2.0 base score 9.3)
EPSS exploit prediction: 17% (97th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-119
Affected product: Realnetworks Helix Player
Published: 2006-03-23
Last modified: 2026-06-16

Description

Buffer overflow in swfformat.dll in multiple RealNetworks products and versions including RealPlayer 10.x, RealOne Player, Rhapsody 3, and Helix Player allows remote attackers to execute arbitrary code via a crafted SWF (Flash) file with (1) a size value that is less than the actual size, or (2) other unspecified manipulations.

Frequently asked questions

What is CVE-2006-0323?: Buffer overflow in swfformat.dll in multiple RealNetworks products and versions including RealPlayer 10.x, RealOne Player, Rhapsody 3, and Helix Player allows remote attackers to execute arbitrary code via a crafted SWF (Flash) file with (1) a size value that is less than the actual size, or (2) other unspecified manipulations.
How severe is CVE-2006-0323?: CVE-2006-0323 has a CVSS 2.0 base score of 9.3, rated critical severity.
Is CVE-2006-0323 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 17% (97th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2006-0323?: CVE-2006-0323 primarily affects Realnetworks Helix Player. In total, 6 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2006-0323?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2006-0323 published?: CVE-2006-0323 was published on 2006-03-23 and last updated on 2026-06-16.

References

Affected products (6)

cpe:2.3:a:realnetworks:helix_player:*:*:*:*:*:*:*:*
cpe:2.3:a:realnetworks:realone_player:*:*:*:*:*:*:*:*
cpe:2.3:a:realnetworks:realplayer:10.0:gold:*:*:*:*:*:*
cpe:2.3:a:realnetworks:realplayer:10.0.6:*:*:*:*:*:*:*
cpe:2.3:a:realnetworks:realplayer:10.5:*:*:*:*:*:*:*
cpe:2.3:a:realnetworks:rhapsody:3:*:*:*:*:*:*:*

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