CVE-2009-4257

critical
Published 2010-01-25 ยท Modified 2026-04-29
CVSS v3
โ€”
CVSS v4 NEW
โ€”
not yet in upstream
VIR risk
9.3

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.

Predictions

Exploit likelihood
20%
Patch ETA
โ€”

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

No mitigations published for this CVE yet.

The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or โ€” if you've already worked around this in production โ€” publish your fix to the community-verified tier.

โœš Propose a mitigation on Community โ†’ Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here with source_tier=community-verified.

OS impact

macos macOS Fixed 1 release
VersionStatusFixed in
โ€” Not affected โ€”

Application impact

VendorProductVersionsFixed
realnetworksrealplayer10.0
realnetworksrealplayer10.5
realnetworksrealplayer11.0
realnetworksrealplayer11.0.1
realnetworksrealplayer11.0.2
realnetworksrealplayer11.0.3
realnetworksrealplayer11.0.4
realnetworksrealplayer11.0.5
realnetworksrealplayer_enterprise
realnetworksrealplayer_sp1.0.0
realnetworksrealplayer_sp1.0.1
realnetworksrealplayer10.1
realnetworkshelix_player10.0
realnetworkshelix_player11.0.0
realnetworkshelix_player11.0.1
realnetworksrealplayer11.0.0

References

CWEs

CWE-119

Community-verified mitigations for this CVE will appear above when contributors publish them.

Verify integrity in audit chain (admin only). AS-IS.