CVE-2011-10021Public exploit

Code execution via unchecked arrangement-file copy

Published Aug 20, 2025 · Updated May 15, 2026

Stack-based buffer overflow in MAGIX Music Maker 16 allows context-dependent attackers to execute code through a crafted .mmm file. The .mmm arrangement-file parser passes attacker-controlled data to strcpy() without checking its length, allowing the copy to overwrite an SEH handler. Exploitation requires a user to open the file, after which code runs in the Music Maker process and can bypass DEP and ASLR on Windows XP, Vista, and 7.

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-based buffer overflow in MAGIX Music Maker 16 allows context-dependent attackers to execute code through a crafted .mmm file. The .mmm arrangement-file parser passes attacker-controlled data to strcpy() without checking its length, allowing the copy to overwrite an SEH handler. Exploitation requires a user to open the file, after which code runs in the Music Maker process and can bypass DEP and ASLR on Windows XP, Vista, and 7.

The record

CVE
CVE-2011-10021
Published
Aug 20, 2025
Updated
May 15, 2026
Vendor
MAGIX Software GmbH
Product
MAGIX Music Maker
Classifications
CWE-121, T1204.002, T1203
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 20, 2025CVE publishedPublication date reported by the CVE source.
  2. May 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 <=16

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

MAGIX Software GmbH · MAGIX Music Makerversion=0 <=16

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
T1204.002Malicious File
T1203Exploitation for Client Execution

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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