What is CVE-2021-47877?

CVE-2021-47877 is a high-severity vulnerability in Geogebra Graphing Calculato‪r‬, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 7.5/10. Published 2026-01-21.

How severe is CVE-2021-47877?

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

Resource exhaustion in Geogebra Graphing Calculato‪r‬

CVE-2021-47877

GeoGebra Graphing Calculator 6.0.631.0 contains a denial of service vulnerability that allows attackers to crash the application by inputting an oversized buffer. Attackers can generate a payload of 8000 repeated characters to overwhelm the input field and cause the application to become unresponsive.

EPSS: 0.002 (15.1th percentile) — read the EPSS interpretation.

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.

Affected products

Geogebra Graphing Calculato‪r‬ — versions 6.0.631.0

Weakness classification (CWE)

CWE-770 — Allocation of Resources Without Limits or Throttling

References

disclosure@vulncheck.com (exploit)
disclosure@vulncheck.com (product)
disclosure@vulncheck.com (third-party-advisory)

Frequently asked questions

What is CVE-2021-47877?: CVE-2021-47877 is a high-severity vulnerability in Geogebra Graphing Calculato‪r‬, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 7.5/10. Published 2026-01-21.
How severe is CVE-2021-47877?: High severity. CVSS v3 base score is 7.5 out of 10.