Buffer overflow in the Unescape function in common/util/hxurl.cpp and…
Priority MEDIUM 46CWE-119Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- — Not recorded in CVSS 2.0
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- Partial · Partial · Partial
- Fix status
- Fixed
Attack profile from CVSS 2.0 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-119 and the CVSS impact.
Summary
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.
Why it matters now
EPSS 0.1132 96th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Fixed Red Hat: 1 advisory
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 2
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:realnetworks:helix_player:1.0.6:*:linux:*:*:*:*:* | 1.0.6 | Vulnerable | RealNetworks |
| cpe:2.3:a:realnetworks:realplayer:*:*:linux:*:*:*:*:* | all versions | Vulnerable | RealNetworks |
- cpe:2.3:a:realnetworks:helix_player:1.0.6:*:linux:*:*:*:*:* Versions 1.0.6 Vulnerable ·RealNetworks
- cpe:2.3:a:realnetworks:realplayer:*:*:linux:*:*:*:*:* Versions all versions Vulnerable ·RealNetworks
Remediation
Red Hat 1 advisory
- RHSA-2010:0094 Released 2010-02-09 · Red Hat rating CriticalHelixPlayer security update
- Red Hat Enterprise Linux AS version 4 HelixPlayer-1:1.0.6-1.el4_8.1, HelixPlayer-1:1.0.6-1.el4_8.1.i386, HelixPlayer-1:1.0.6-1.el4_8.1.ppc
- Red Hat Enterprise Linux Desktop version 4 HelixPlayer-1:1.0.6-1.el4_8.1, HelixPlayer-1:1.0.6-1.el4_8.1.i386
- Red Hat Enterprise Linux ES version 4 HelixPlayer-1:1.0.6-1.el4_8.1, HelixPlayer-1:1.0.6-1.el4_8.1.i386
- Red Hat Enterprise Linux WS version 4 HelixPlayer-1:1.0.6-1.el4_8.1, HelixPlayer-1:1.0.6-1.el4_8.1.i386
Vendor assessments
Red Hat
Red Hat rating: Critical. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux AS version 4 | Fixed | RHSA-2010:0094 |
| Red Hat Enterprise Linux Desktop version 4 | Fixed | RHSA-2010:0094 |
| Red Hat Enterprise Linux ES version 4 | Fixed | RHSA-2010:0094 |
| Red Hat Enterprise Linux WS version 4 | Fixed | RHSA-2010:0094 |
Timeline
- 2026-10-02 Threatist record created from CVE-2010-0416
- 2026-10-03 Alias added: GHSA-mcf9-pq3p-q6q8
References
More RealNetworks Helix Player vulnerabilities
- TI-2007-03304 Stack-based buffer overflow in the SmilTimeValue::parseWallClockValue function in… CVSS 2.0HIGH 9.3
- TI-2006-00313 Buffer overflow in swfformat.dll in multiple RealNetworks products and versions including… CVSS 2.0HIGH 9.3
- TI-2009-04041 Heap-based buffer overflow in datatype/smil/common/smlpkt.cpp in smlrender.dll in… CVSS 2.0HIGH 9.3
- TI-2009-04026 Heap-based buffer overflow in the CGIFCodec::GetPacketBuffer function in… CVSS 2.0HIGH 9.3
- TI-2009-04032 Buffer overflow in the RTSPProtocol::HandleSetParameterRequest function in… CVSS 2.0HIGH 9.3
- TI-2009-04031 Stack-based buffer overflow in protocol/rtsp/rtspclnt.cpp in RealNetworks RealPlayer 10… CVSS 2.0HIGH 9.3
Sources
- CVE-2010-0416 · CVE Program
- CVE-2010-0416 · NVD
- FIRST EPSS
- GHSA-mcf9-pq3p-q6q8 · GitHub Advisory Database · CC BY 4.0
- CVE-2010-0416 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences