How severe is CVE-2010-4396?

CVE-2010-4396 has a CVSS 2.0 base score of 4.3, rated medium severity.

Is CVE-2010-4396 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (63rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2010-4396?

CVE-2010-4396 primarily affects Realnetworks Realplayer. In total, 18 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2010-4396?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2010-4396 published?

CVE-2010-4396 was published on 2010-12-14 and last updated on 2026-06-16.

CVE-2010-4396

CVE-2010-4396 is a medium-severity vulnerability in Realnetworks Realplayer with a CVSS 2.0 base score of 4.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-20.

Key facts

Severity: Medium (CVSS 2.0 base score 4.3)
EPSS exploit prediction: 1% (63rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Realnetworks Realplayer
Published: 2010-12-14
Last modified: 2026-06-16

Description

Cross-zone scripting vulnerability in the HandleAction method in a certain ActiveX control in RealNetworks RealPlayer 11.0 through 11.1, RealPlayer SP 1.0 through 1.1.5, and RealPlayer Enterprise 2.1.2 allows remote attackers to inject arbitrary web script or HTML in the Local Zone by specifying a local file in a NavigateToURL action, as demonstrated by a local skin file.

Frequently asked questions

What is CVE-2010-4396?: Cross-zone scripting vulnerability in the HandleAction method in a certain ActiveX control in RealNetworks RealPlayer 11.0 through 11.1, RealPlayer SP 1.0 through 1.1.5, and RealPlayer Enterprise 2.1.2 allows remote attackers to inject arbitrary web script or HTML in the Local Zone by specifying a local file in a NavigateToURL action, as demonstrated by a local skin file.
How severe is CVE-2010-4396?: CVE-2010-4396 has a CVSS 2.0 base score of 4.3, rated medium severity.
Is CVE-2010-4396 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (63rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2010-4396?: CVE-2010-4396 primarily affects Realnetworks Realplayer. In total, 18 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2010-4396?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2010-4396 published?: CVE-2010-4396 was published on 2010-12-14 and last updated on 2026-06-16.

References

Affected products (18)

cpe:2.3:a:realnetworks:realplayer:11.0:*:*:*:*:*:*:*
cpe:2.3:a:realnetworks:realplayer:11.0.1:*:*:*:*:*:*:*
cpe:2.3:a:realnetworks:realplayer:11.0.2:*:*:*:*:*:*:*
cpe:2.3:a:realnetworks:realplayer:11.0.3:*:*:*:*:*:*:*
cpe:2.3:a:realnetworks:realplayer:11.0.4:*:*:*:*:*:*:*
cpe:2.3:a:realnetworks:realplayer:11.0.5:*:*:*:*:*:*:*
cpe:2.3:a:realnetworks:realplayer:11.1:*:*:*:*:*:*:*
cpe:2.3:a:realnetworks:realplayer_sp:1.0.0:*:*:*:*:*:*:*
cpe:2.3:a:realnetworks:realplayer_sp:1.0.1:*:*:*:*:*:*:*
cpe:2.3:a:realnetworks:realplayer_sp:1.0.2:*:*:*:*:*:*:*
cpe:2.3:a:realnetworks:realplayer_sp:1.0.5:*:*:*:*:*:*:*
cpe:2.3:a:realnetworks:realplayer_sp:1.1:*:*:*:*:*:*:*
cpe:2.3:a:realnetworks:realplayer_sp:1.1.1:*:*:*:*:*:*:*
cpe:2.3:a:realnetworks:realplayer_sp:1.1.2:*:*:*:*:*:*:*
cpe:2.3:a:realnetworks:realplayer_sp:1.1.3:*:*:*:*:*:*:*
cpe:2.3:a:realnetworks:realplayer_sp:1.1.4:*:*:*:*:*:*:*
cpe:2.3:a:realnetworks:realplayer_sp:1.1.5:*:*:*:*:*:*:*
cpe:2.3:a:realnetworks:realplayer:2.1.2:*:enterprise:*:*:*:*:*

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