CVE-2021-47877

HIGH

GeoGebra Graphing Calculator <6.0.631.0 - DoS

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2021-47877. PoCs published by Brian Rodriguez.

AI-analyzed exploit summary This exploit generates a large buffer of 'A' characters to trigger a denial-of-service (DoS) in GeoGebra Graphing Calculator by overwriting memory when pasted into the input field. The PoC is straightforward and relies on a buffer overflow technique.

Description

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.

Exploits (1)

exploitdb WORKING POC
by Brian Rodriguez · pythonlocalwindows
https://www.exploit-db.com/exploits/49653

This exploit generates a large buffer of 'A' characters to trigger a denial-of-service (DoS) in GeoGebra Graphing Calculator by overwriting memory when pasted into the input field. The PoC is straightforward and relies on a buffer overflow technique.

Classification
Working Poc 90%
Attack Type
Dos
Complexity
Trivial
Reliability
Reliable
Target: GeoGebra Graphing Calculator 6.0.631.0-offlinegraphing
No auth needed
Prerequisites: GeoGebra Graphing Calculator 6.0.631.0-offlinegraphing installed on Windows
devstral-2 · analyzed Feb 16, 2026 Full analysis →

References (3)

Core 3
Core References
Exploit, Third Party Advisory exploit
https://www.exploit-db.com/exploits/49653
Various Sources product
https://www.geogebra.org

Scores

CVSS v3 7.5
EPSS 0.0024
EPSS Percentile 14.7%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CISA SSVC

Vulnrichment
Exploitation poc
Automatable no
Technical Impact partial

Details

CWE
CWE-770
Status published
Products (1)
GeoGebra/GeoGebra Graphing Calculato‪r‬ 6.0.631.0
Published Jan 21, 2026
Tracked Since Feb 18, 2026