Buffer overflow in Code::blocks
CVE-2020-37121
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.
Vulnerability class: Buffer Overflow
EPSS: 0.002 (11.0th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H.
Affected products
- Code::blocks — versions 16.01
Weakness classification (CWE)
References
- ExploitDB-48344 (exploit)
- disclosure@vulncheck.com (product)
- disclosure@vulncheck.com (product, third-party-advisory)
- disclosure@vulncheck.com (third-party-advisory)
- disclosure@vulncheck.com (exploit)
Frequently asked questions
- What is CVE-2020-37121?
- CVE-2020-37121 is a medium-severity vulnerability in Code::blocks, classified under Stack-based Buffer Overflow. CVSS score: 5.5/10. Published 2026-02-05.
- How severe is CVE-2020-37121?
- Medium severity. CVSS v3 base score is 5.5 out of 10.