CVE-2010-4388

The (1) Upsell.htm, (2) Main.html, and (3) Custsupport.html components in RealNetworks RealPlayer 11.0 through 11.1, RealPlayer SP 1.0 through 1.1.5, and RealPlayer Enterprise 2.1.2 and 2.1.3 allow remote attackers to inject code into the RealOneActiveXObject process, and consequently bypass intended Local Machine Zone restrictions and load arbitrary ActiveX controls, via unspecified vectors.

Published: 2010-12-14 Last update: 2026-04-29 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2010-4388 is rated Moderate Risk (42.8/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 1.46%). EPSS rose +1.08% over the last day, indicating growing attacker interest. Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2010-4388

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 0.39% 1.46% +1.08%
2 2025-03-17 5.11% 0.39% -4.73%
3 2024-12-17 — 5.11% —

Full EPSS history (11 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2010-4388

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
4.3 2.0 MEDIUM
AV:N/AC:M/Au:N/C:N/I:P/A:N Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:M)
Exploitation needs some favorable conditions, but not exceptional ones.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:N)
No confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:N)
No availability impact.
 8.6 2.9 [email protected]

Weakness enumeration for CVE-2010-4388

Affected software / configurations for CVE-2010-4388

Vendor Product Version Raw CPE
realnetworks realplayer 11.0 cpe:2.3:a:realnetworks:realplayer:11.0:*:*:*:*:*:*:*
realnetworks realplayer 11.0.1 cpe:2.3:a:realnetworks:realplayer:11.0.1:*:*:*:*:*:*:*
realnetworks realplayer 11.0.2 cpe:2.3:a:realnetworks:realplayer:11.0.2:*:*:*:*:*:*:*
realnetworks realplayer 11.0.3 cpe:2.3:a:realnetworks:realplayer:11.0.3:*:*:*:*:*:*:*
realnetworks realplayer 11.0.4 cpe:2.3:a:realnetworks:realplayer:11.0.4:*:*:*:*:*:*:*
realnetworks realplayer 11.0.5 cpe:2.3:a:realnetworks:realplayer:11.0.5:*:*:*:*:*:*:*
realnetworks realplayer 11.1 cpe:2.3:a:realnetworks:realplayer:11.1:*:*:*:*:*:*:*
realnetworks realplayer_sp 1.0.0 cpe:2.3:a:realnetworks:realplayer_sp:1.0.0:*:*:*:*:*:*:*
realnetworks realplayer_sp 1.0.1 cpe:2.3:a:realnetworks:realplayer_sp:1.0.1:*:*:*:*:*:*:*
realnetworks realplayer_sp 1.0.2 cpe:2.3:a:realnetworks:realplayer_sp:1.0.2:*:*:*:*:*:*:*
realnetworks realplayer_sp 1.0.5 cpe:2.3:a:realnetworks:realplayer_sp:1.0.5:*:*:*:*:*:*:*
realnetworks realplayer_sp 1.1 cpe:2.3:a:realnetworks:realplayer_sp:1.1:*:*:*:*:*:*:*
realnetworks realplayer_sp 1.1.1 cpe:2.3:a:realnetworks:realplayer_sp:1.1.1:*:*:*:*:*:*:*
realnetworks realplayer_sp 1.1.2 cpe:2.3:a:realnetworks:realplayer_sp:1.1.2:*:*:*:*:*:*:*
realnetworks realplayer_sp 1.1.3 cpe:2.3:a:realnetworks:realplayer_sp:1.1.3:*:*:*:*:*:*:*
realnetworks realplayer_sp 1.1.4 cpe:2.3:a:realnetworks:realplayer_sp:1.1.4:*:*:*:*:*:*:*
realnetworks realplayer_sp 1.1.5 cpe:2.3:a:realnetworks:realplayer_sp:1.1.5:*:*:*:*:*:*:*
realnetworks realplayer 2.1.2 cpe:2.3:a:realnetworks:realplayer:2.1.2:*:enterprise:*:*:*:*:*
realnetworks realplayer 2.1.3 cpe:2.3:a:realnetworks:realplayer:2.1.3:*:enterprise:*:*:*:*:*

References for CVE-2010-4388

cvelogic Threat Intelligence