Code::Blocks vulnerabilities

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Published CVEs affecting Code::Blocks products: 3 record(s), with severity, exploitation and fixes.

Exploited only (KEV) →

CVE-2020-37121 Medium · 5.5 CWE-121 Feb 5, 2026

CODE::BLOCKS 16.01 - Buffer Overflow (SEH) UNICODE

CODE::BLOCKS 16.01 contains a buffer overflow vulnerability that allows attackers to execute arbitrary code by overwriting Structured Exception Handler with crafted Unicode characters. Attackers can create a malicious text file with 1982 bytes of buffer and shellcode to trigger remote code execution.

CVE-2020-37040 High · 8.4 CWE-120 Jan 30, 2026

Code Blocks 17.12 - 'File Name' Local Buffer Overflow

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.

CVE-2020-37038 High · 7.5 CWE-770 Jan 30, 2026

Code Blocks 20.03 - Denial Of Service

Code Blocks 20.03 contains a denial of service vulnerability that allows attackers to crash the application by manipulating input in the FSymbols search field. Attackers can paste a large payload of 5000 repeated characters into the search field to trigger an application crash.