CVE-2010-0416

Helix Player and RealPlayer - Buffer Overflow via Malformed URL Percent Encoding

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2010-0416. PoCs published by gwright.

AI-analyzed exploit summary The exploit demonstrates a buffer overflow vulnerability in Helix Player by providing a malformed URI with an excessively long format specifier (%.20000000s%). This can lead to remote code execution or denial-of-service conditions due to inadequate boundary checks.

Description

Buffer overflow in the Unescape function in common/util/hxurl.cpp and player/hxclientkit/src/CHXClientSink.cpp in Helix Player 1.0.6 and RealPlayer allows remote attackers to cause a denial of service (application crash) or possibly execute arbitrary code via a URL argument containing a % (percent) character that is not followed by two hex digits.

Exploits (1)

exploitdb WORKING POC VERIFIED
by gwright · textremotelinux
https://www.exploit-db.com/exploits/33620

The exploit demonstrates a buffer overflow vulnerability in Helix Player by providing a malformed URI with an excessively long format specifier (%.20000000s%). This can lead to remote code execution or denial-of-service conditions due to inadequate boundary checks.

Classification
Working Poc 80%
Attack Type
Rce
Complexity
Trivial
Reliability
Theoretical
Target: Helix Player
No auth needed
Prerequisites: Network access to the target Helix Player instance
devstral-2 · analyzed Feb 16, 2026 Full analysis →

References (6)

Core 6
Core References
Vendor Advisory vendor-advisory x_refsource_redhat
http://www.redhat.com/support/errata/RHSA-2010-0094.html
Third Party Advisory third-party-advisory x_refsource_secunia
http://secunia.com/advisories/38450
Issue Tracking x_refsource_confirm
https://bugzilla.redhat.com/show_bug.cgi?id=561856
Third Party Advisory, VDB Entry vdb-entry signature x_refsource_oval
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10847

Scores

EPSS 0.1888
EPSS Percentile 95.4%

Details

CWE
CWE-119
Status published
Products (2)
realnetworks/helix_player 1.0.6
realnetworks/realplayer
Published Feb 18, 2010
Tracked Since Feb 18, 2026