CVE-2020-37040

HIGH 8.4

Code Blocks 17.12 - 'File Name' Local Buffer Overflow

CVSS Score

8.4

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-120
Vendor	code::blocks
Product	code::blocks
Published	Jan 30, 2026
Last Updated	Jul 28, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector

Local

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Affected Versions

Code::Blocks / Code::Blocks

17.12

References

NVD ↗ CVE.org ↗ EPSS Data ↗

exploit-db.com: https://www.exploit-db.com/exploits/48594 codeblocks.org: http://www.codeblocks.org/ sourceforge.net: https://sourceforge.net/projects/codeblocks vulncheck.com: https://www.vulncheck.com/advisories/code-blocks-file-name-local-buffer-overflow

Credits

Paras Bhatia