Heap-based buffer overflow in MuseScore
Key facts
- Attack vector
- Local
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.0 · CNA. Fix status from CNA. Impact type from CWE-122 and the CVSS impact.
Summary
MuseScore CAP File Parsing Heap-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of MuseScore. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The specific flaw exists within the parsing of CAP files. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a heap-based buffer. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-20769.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
Remediation
No fixed version listed by the sources yet.
Vendor assessments
Timeline
- 2026-10-02 Threatist record created from CVE-2023-44428
- 2026-10-03 Alias added: GHSA-99f4-c4w3-4vm2
References
Advisory 1
More Musescore vulnerabilities
- TI-2023-11826 Musescore 3.0 to 4.0.1 has a stack buffer overflow vulnerability that occurs when reading… CVSS 3.1HIGH 7.0
Sources
- CVE-2023-44428 · CVE Program
- CVE-2023-44428 · NVD
- FIRST EPSS
- GHSA-99f4-c4w3-4vm2 · GitHub Advisory Database · CC BY 4.0
- CVE-2023-44428 · 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