CVE-2021-21948

Name: CVE-2021-21948
Creator: NVD / NIST
Published: 2022-04-14T20:15:08.513+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.8/10EPSS 0.74%

Last modified Jun 17, 2026

CVE-2021-21948 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. A heap-based buffer overflow vulnerability exists in the readDatHeadVec functionality of AnyCubic Chitubox AnyCubic Plugin 1.0.0. A specially-crafted GF file can lead to a heap buffer overflow. EPSS estimates a 0.74% chance of exploitation in the next 30 days.

Description

A heap-based buffer overflow vulnerability exists in the readDatHeadVec functionality of AnyCubic Chitubox AnyCubic Plugin 1.0.0. A specially-crafted GF file can lead to a heap buffer overflow. An attacker can provide a malicious file to trigger this vulnerability.

Metrics

CVSS 3.1

7.8/10

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

EPSS Probability

0.74%

50.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Chitubox	Chitubox Basic	1.8.1
Anycubic	Chitubox	1.0.0

References

https://talosintelligence.com/vulnerability_reports/TALOS-2021-1376Exploit, Third Party Advisory
https://talosintelligence.com/vulnerability_reports/TALOS-2021-1376Exploit, Third Party Advisory

Timeline

Published: Apr 14, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-21948?

How severe is CVE-2021-21948?

CVE-2021-21948 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 0.74% probability of exploitation in the next 30 days.

How do I fix CVE-2021-21948?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-21948?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST