CVE-2020-37121

MEDIUM 5.5

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

CVSS Score

5.5

EPSS Score

0.0%

EPSS Percentile

0th

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 M3U playlist file with 536 bytes of buffer and shellcode to trigger remote code execution.

CWE	CWE-121
Vendor	code::blocks
Product	code::blocks
Published	Feb 5, 2026
Last Updated	Jul 28, 2026

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CVSS v3 Breakdown

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

Attack Vector

Local

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Affected Versions

Code::Blocks / Code::Blocks

16.01

References

NVD ↗ CVE.org ↗ EPSS Data ↗

exploit-db.com: https://www.exploit-db.com/exploits/48344 codeblocks.org: https://www.codeblocks.org/ sourceforge.net: https://sourceforge.net/projects/codeblocks/ vulncheck.com: https://www.vulncheck.com/advisories/codeblocks-buffer-overflow-seh-unicode

Credits

T3jv1l