CVE-2010-20042Public exploit

Code execution via overlong Unicode playlist entry

Published Aug 20, 2025 · Updated Jul 15, 2026

Stack buffer overflow in r2 Studios Xion Audio Player 1.0.126 and earlier allows context-dependent attackers to execute code via a crafted M3U file. The .m3u/.m3u8 playlist parser places an overlong Unicode string in a stack buffer and overwrites a Structured Exception Handler record. Execution requires a user to open or play the malicious playlist, and resulting code runs with the user's application privileges.

CVSS severity8.4
High
EPSS probability0.34%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stack buffer overflow in r2 Studios Xion Audio Player 1.0.126 and earlier allows context-dependent attackers to execute code via a crafted M3U file. The .m3u/.m3u8 playlist parser places an overlong Unicode string in a stack buffer and overwrites a Structured Exception Handler record. Execution requires a user to open or play the malicious playlist, and resulting code runs with the user's application privileges.

The record

CVE
CVE-2010-20042
Published
Aug 20, 2025
Updated
Jul 15, 2026
Vendor
r2 Studios
Product
Xion Audio Player
Classifications
CWE-121, T1203, T1204.002
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 20, 2025CVE publishedPublication date reported by the CVE source.
  2. Jul 15, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <=1.0.126

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

r2 Studios · Xion Audio Playerversion=0 <=1.0.126

Published CVSS scores

8.4VulnCheckCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-121Stack-based Buffer Overflow
T1203Exploitation for Client Execution
T1204.002Malicious File

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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