What’s Vulnerable › Vulnerabilities

CVE-2009-4257

• Severity: critical (CVSS 9.3 v2.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 8.5% 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

Heap-based buffer overflow in datatype/smil/common/smlpkt.cpp in smlrender.dll in 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 11.0.0, and Helix Player 10.x and 11.0.0 allows remote attackers to execute arbitrary code via an SMIL file with crafted string lengths.

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/datatype-cvs/2008-September/008678.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/archive/1/509105/100/0/threaded
• http://www.securityfocus.com/bid/37880
• http://www.vupen.com/english/advisories/2010/0178
• http://www.zerodayinitiative.com/advisories/ZDI-10-007/
• https://bugzilla.redhat.com/show_bug.cgi?id=561309
• https://exchange.xforce.ibmcloud.com/vulnerabilities/55798

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