What’s Vulnerable › Vulnerabilities

CVE-2009-4247

• Severity: critical (CVSS 9.3 v2.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 6.8% 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

Stack-based buffer overflow in protocol/rtsp/rtspclnt.cpp in RealNetworks RealPlayer 10; RealPlayer 10.5 6.0.12.1040 through 6.0.12.1741; RealPlayer 11 11.0.x; RealPlayer SP 1.0.0 and 1.0.1; RealPlayer Enterprise; Mac RealPlayer 10, 10.1, 11.0, and 11.0.1; Linux RealPlayer 10, 11.0.0, and 11.0.1; and Helix Player 10.x, 11.0.0, and 11.0.1 allows remote attackers to cause a denial of service (application crash) or possibly execute arbitrary code via an ASM RuleBook with a large number of rules, related to an "array 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://lists.helixcommunity.org/pipermail/helix-client-dev/2009-August/008092.html
• http://lists.helixcommunity.org/pipermail/protocol-cvs/2009-August/001943.html
• http://secunia.com/advisories/38218
• http://secunia.com/advisories/38450
• http://securitytracker.com/id?1023489
• http://service.real.com/realplayer/security/01192010_player/en/
• http://www.redhat.com/support/errata/RHSA-2010-0094.html
• http://www.securityfocus.com/bid/37880
• http://www.vupen.com/english/advisories/2010/0178
• https://bugzilla.redhat.com/show_bug.cgi?id=561338
• https://exchange.xforce.ibmcloud.com/vulnerabilities/55802
• https://helixcommunity.org/viewcvs/protocol/rtsp/rtspclnt.cpp?view=log#rev1.245

Get alerted when CVE-2009-4247 or the next vulnerability affects your stack