musescore2, musescore3 — security advisory
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.
- Products
- musescore2, musescore3
- Affected versions
- 2.3.2+dfsg4-15, 2.3.2+dfsg4-16, 2.3.2+dfsg4-17, 3.2.3+dfsg2-16, 3.2.3+dfsg2-17, 3.2.3+dfsg2-18, 3.2.3+dfsg2-19, 3.2.3+dfsg2-20, 3.2.3+dfsg2-21
- Fixed versions
- 2.3.2+dfsg4-16, 3.2.3+dfsg2-18
- CVEs
- CVE-2023-44428
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 16:11 UTC · Revision 1
Source evidence
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.
osv:DEBIAN-CVE-2023-44428
musescore2
Fixed versions: Not specified
musescore2
Fixed versions: 2.3.2+dfsg4-16
musescore3
Fixed versions: Not specified
musescore3
Fixed versions: 3.2.3+dfsg2-18
musescore3
Fixed versions: 3.2.3+dfsg2-18
Complete source record
{
"id": "9193fb232f9376cad9fe18902f55e67816a981ec99a77d91136e9d387fe07915",
"url": "https://osv.dev/vulnerability/DEBIAN-CVE-2023-44428",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "DEBIAN-CVE-2023-44428",
"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.",
"evidence": "osv:DEBIAN-CVE-2023-44428",
"products": [
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},
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{
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"severity": "high",
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"aliases": [
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"metrics": [
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"score": "CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"
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"ecosystem": "Debian:12"
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"database_specific": {
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{
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"package": {
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"ecosystem": "Debian:13"
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{
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],
"package": {
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},
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},
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}
}
],
"modified": "2026-10-26T18:02:49.543447799Z",
"provider": "osv",
"upstream": [
"CVE-2023-44428"
],
"references": [
"https://security-tracker.debian.org/tracker/CVE-2023-44428"
]
},
"related_cves": [
{
"value": "CVE-2023-44428",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 456923,
"published_at": "2024-05-03T03:15:57.46+00:00"
}