CVE catalog
CVE-2020-37121
codeblocks: CVE-2020-37121
- Severity
- Medium · CVSS 5.5
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 0.24% · Oct 25, 2026
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. Red Hat Product Security has determined that this vulnerability does not affect any currently supported Red Hat product. This assessment may evolve based on further analysis and discovery. For more information about this vulnerability and the products it affects, please see the linked references. The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | codeblocks | bookworm | Not reported | vulnerable |
| Ubuntu | codeblocks | 16.04 | 13.12-3.1build1 | vulnerable |
| Ubuntu | codeblocks | 16.04 | 13.12+dfsg-4 | vulnerable |
| Ubuntu | codeblocks | 18.04 | 16.01+dfsg-2.1 | vulnerable |
| Ubuntu | codeblocks | 20.04 | 16.01+dfsg-2.1 | vulnerable |
| Ubuntu | codeblocks | 20.04 | 17.12+dfsg-1 | vulnerable |
| Ubuntu | codeblocks | 20.04 | 17.12+dfsg-1build1 | vulnerable |
| Ubuntu | codeblocks | 20.04 | 20.03-3 | vulnerable |
| Ubuntu | codeblocks | 22.04 | 20.03-3 | vulnerable |
| Ubuntu | codeblocks | 22.04 | 20.03-3.1 | vulnerable |
| Ubuntu | codeblocks | 24.04 | 20.03+svn13046-0.1build1 | vulnerable |
| Ubuntu | codeblocks | 24.04 | 20.03+svn13046-0.2 | vulnerable |
| Ubuntu | codeblocks | 24.04 | 20.03+svn13046-0.3build1 | vulnerable |
| Ubuntu | codeblocks | 24.04 | 20.03+svn13046-0.3build2 | vulnerable |
| Ubuntu | codeblocks | 25.10 | 20.03+svn13046-0.4 | vulnerable |
| Ubuntu | codeblocks | 25.10 | 25.03+dfsg-2 | vulnerable |
| Ubuntu | codeblocks | 26.10 | 25.03+dfsg-2.1 | vulnerable |
| Ubuntu | codeblocks | 26.10 | 25.03+dfsg-3 | vulnerable |
| Ubuntu | codeblocks | 26.04 | 25.03+dfsg-2 | vulnerable |
| Ubuntu | codeblocks | 26.04 | 25.03+dfsg-2.1 | vulnerable |
Fixed-version evidence
OpenFactory catalog packages
[Debian 12 (Bookworm)]
- [codeblocks]Affected
Source package: [codeblocks]
Details (2)
20.03+svn13046-0.1+b2· amd64 · bookwormAffected
dsa · codeblocks · debian · bookworm
20.03+svn13046-0.1+b2· arm64 · bookwormAffected
dsa · codeblocks · debian · bookworm
- [codeblocks-common]Affected
Source package: [codeblocks]
Details (2)
20.03+svn13046-0.1· all · bookwormAffected
dsa · codeblocks · debian · bookworm
20.03+svn13046-0.1· all · bookwormAffected
dsa · codeblocks · debian · bookworm
- [codeblocks-contrib]Affected
Source package: [codeblocks]
Details (2)
20.03+svn13046-0.1+b2· amd64 · bookwormAffected
dsa · codeblocks · debian · bookworm
20.03+svn13046-0.1+b2· arm64 · bookwormAffected
dsa · codeblocks · debian · bookworm
- [codeblocks-dev]Affected
Source package: [codeblocks]
Details (2)
20.03+svn13046-0.1+b2· amd64 · bookwormAffected
dsa · codeblocks · debian · bookworm
20.03+svn13046-0.1+b2· arm64 · bookwormAffected
dsa · codeblocks · debian · bookworm
- [libcodeblocks0]Affected
Source package: [codeblocks]
Details (2)
20.03+svn13046-0.1+b2· amd64 · bookwormAffected
dsa · codeblocks · debian · bookworm
20.03+svn13046-0.1+b2· arm64 · bookwormAffected
dsa · codeblocks · debian · bookworm
- [libwxsmithlib0]Affected
Source package: [codeblocks]
Details (2)
20.03+svn13046-0.1+b2· amd64 · bookwormAffected
dsa · codeblocks · debian · bookworm
20.03+svn13046-0.1+b2· arm64 · bookwormAffected
dsa · codeblocks · debian · bookworm
- [libwxsmithlib-dev]Affected
Source package: [codeblocks]
Details (2)
20.03+svn13046-0.1+b2· amd64 · bookwormAffected
dsa · codeblocks · debian · bookworm
20.03+svn13046-0.1+b2· arm64 · bookwormAffected
dsa · codeblocks · debian · bookworm
Observed:
References
- [https://osv.dev/vulnerability/DEBIAN-CVE-2020-37121]
- [https://osv.dev/vulnerability/UBUNTU-CVE-2020-37121]
- [https://security-tracker.debian.org/tracker/CVE-2020-37121]
- [https://security.access.redhat.com/data/csaf/v2/vex/2020/cve-2020-37121.json]
[Debian Security Tracker] · [FIRST EPSS] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX]