High
codeblocks — security advisory
Code Blocks 17.12 contains a local buffer overflow vulnerability that allows attackers to execute arbitrary code by crafting a malicious file name with Unicode characters. Attackers can trigger the vulnerability by pasting a specially crafted payload into the file name field during project creation, potentially executing system commands like calc.exe.
- Products
- codeblocks
- Affected versions
- 13.12+dfsg-4, 13.12-3.1build1, 16.01+dfsg-2.1, 17.12+dfsg-1, 17.12+dfsg-1build1, 20.03+svn13046-0.1build1, 20.03+svn13046-0.2, 20.03+svn13046-0.3build1, 20.03+svn13046-0.3build2, 20.03+svn13046-0.4, 20.03-3, 20.03-3.1, 25.03+dfsg-2, 25.03+dfsg-2.1, 25.03+dfsg-3
- Fixed versions
- Not specified
- CVEs
- CVE-2020-37040
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 00:38 UTC · Revision 1
Source evidence
Code Blocks 17.12 contains a local buffer overflow vulnerability that allows attackers to execute arbitrary code by crafting a malicious file name with Unicode characters. Attackers can trigger the vulnerability by pasting a specially crafted payload into the file name field during project creation, potentially executing system commands like calc.exe.
osv:UBUNTU-CVE-2020-37040
codeblocks
Fixed versions: Not specified
codeblocks
Fixed versions: Not specified
codeblocks
Fixed versions: Not specified
codeblocks
Fixed versions: Not specified
codeblocks
Fixed versions: Not specified
codeblocks
Fixed versions: Not specified
codeblocks
Fixed versions: Not specified
codeblocks
Fixed versions: Not specified
Complete source record
{
"id": "b90f2ce79c3e56f60cee7568b8398c44563f36814984c67a773e0bdbd3244b7b",
"url": "https://osv.dev/vulnerability/UBUNTU-CVE-2020-37040",
"method": "structured",
"payload": {
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"title": "UBUNTU-CVE-2020-37040",
"summary": "Code Blocks 17.12 contains a local buffer overflow vulnerability that allows attackers to execute arbitrary code by crafting a malicious file name with Unicode characters. Attackers can trigger the vulnerability by pasting a specially crafted payload into the file name field during project creation, potentially executing system commands like calc.exe.",
"evidence": "osv:UBUNTU-CVE-2020-37040",
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},
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],
"modified": "2026-10-17T12:55:53.309151006Z",
"provider": "osv",
"upstream": [
"CVE-2020-37040"
],
"references": [
"https://ubuntu.com/security/CVE-2020-37040",
"https://www.cve.org/CVERecord?id=CVE-2020-37040",
"https://www.exploit-db.com/exploits/48594",
"https://sourceforge.net/projects/codeblocks",
"https://www.vulncheck.com/advisories/code-blocks-file-name-local-buffer-overflow"
]
},
"related_cves": [
{
"value": "CVE-2020-37040",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 354226,
"published_at": "2026-01-30T23:16:00+00:00"
}