CVE-2009-4243

Severity: critical (CVSS 9.3 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 3.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2010-01-25 · updated 2026-06-16
Weakness: CWE-119

Description

RealNetworks RealPlayer 10, RealPlayer 10.5 6.0.12.1040 through 6.0.12.1741, RealPlayer 11 11.0.0 through 11.0.4, RealPlayer Enterprise, Mac RealPlayer 10 and 10.1, Linux RealPlayer 10, and Helix Player 10.x allow remote attackers to have an unspecified impact via a crafted media file that uses HTTP chunked transfer coding, related to an "overflow."

Affected products

RealNetworks Helix Player: 10.0, 11.0.0, 11.0.1
RealNetworks Realplayer: 10.0, 10.5, 11.0, 11.0.1, 11.0.2, 11.0.3 (+4)
RealNetworks Realplayer Enterprise: all versions
RealNetworks Realplayer Sp: 1.0.0, 1.0.1

References

http://osvdb.org/61967
http://secunia.com/advisories/38218
http://securitytracker.com/id?1023489
http://service.real.com/realplayer/security/01192010_player/en/
http://www.securityfocus.com/bid/37880
http://www.vupen.com/english/advisories/2010/0178
https://exchange.xforce.ibmcloud.com/vulnerabilities/55796
http://osvdb.org/61967
http://secunia.com/advisories/38218
http://securitytracker.com/id?1023489
http://service.real.com/realplayer/security/01192010_player/en/
http://www.securityfocus.com/bid/37880

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