What is CVE-2020-37038?

CVE-2020-37038 is a high-severity vulnerability in Code::blocks, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 7.5/10. Published 2026-01-30.

How severe is CVE-2020-37038?

High severity. CVSS v3 base score is 7.5 out of 10.

Resource exhaustion in Code::blocks

CVE-2020-37038

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.

Published 2026-01-30 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.004 (34.0th percentile), scored 2026-10-02.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 34th percentile — 34.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: +0.000

Affected products

Code::blocks — versions 20.03

Weakness classification (CWE)

CWE-770 — Allocation of Resources Without Limits or Throttling

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)

Frequently asked questions

What is CVE-2020-37038?: CVE-2020-37038 is a high-severity vulnerability in Code::blocks, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 7.5/10. Published 2026-01-30.
How severe is CVE-2020-37038?: High severity. CVSS v3 base score is 7.5 out of 10.