Vulnerability · Published Jan 30, 2026 · Assigned by VulnCheck
CVE-2020-37038Code Blocks 20.03 - Denial Of Service
High 7.5
In plain English
A high-severity resource allocation without limits in Code::Blocks from Code::Blocks. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 36% of all known vulnerabilities).
Severity (CVSS 3.1)7.5High
Exploit odds (30 days)0.4%top 64.1% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official description
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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | codeblocks | no fix listed | DEBIAN-CVE-2020-37038 |
| Debian:13 | codeblocks | no fix listed | DEBIAN-CVE-2020-37038 |
| Debian:14 | codeblocks | no fix listed | DEBIAN-CVE-2020-37038 |
| Ubuntu:22.04:LTS | codeblocks | no fix listed | UBUNTU-CVE-2020-37038 |
| Ubuntu:24.04:LTS | codeblocks | no fix listed | UBUNTU-CVE-2020-37038 |
| Ubuntu:25.10 | codeblocks | no fix listed | UBUNTU-CVE-2020-37038 |
| Ubuntu:26.04:LTS | codeblocks | no fix listed | UBUNTU-CVE-2020-37038 |
| Ubuntu:26.10 | codeblocks | no fix listed | UBUNTU-CVE-2020-37038 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Code::Blocks | Code::Blocks | 20.03 |
Weakness: CWE-770 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
References
- ExploitDB-48617 exploit
- Code Blocks Official Homepage product
- Code Blocks SourceForge Page product
- VulnCheck Advisory: Code Blocks 20.03 - Denial Of Service third-party-advisory