CVE-2021-32263

Name: CVE-2021-32263
Creator: NVD / NIST
Published: 2021-08-24T18:15:11.3+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.8/10EPSS 0.87%

Last modified Jun 17, 2026

CVE-2021-32263 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. ok-file-formats through 2021-04-29 has a heap-based buffer overflow in the ok_csv_circular_buffer_read function in ok_csv.c.. EPSS estimates a 0.87% chance of exploitation in the next 30 days.

Description

ok-file-formats through 2021-04-29 has a heap-based buffer overflow in the ok_csv_circular_buffer_read function in ok_csv.c.

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

0.87%

54.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-787

Affected Software

Vendor	Product	Versions
Ok-File-Formats Project	Ok-File-Formats	<= 2021-04-29

References

https://github.com/brackeen/ok-file-formats/issues/13Exploit, Patch, Third Party Advisory
https://github.com/brackeen/ok-file-formats/issues/13Exploit, Patch, Third Party Advisory

Timeline

Published: Aug 24, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-32263?

ok-file-formats through 2021-04-29 has a heap-based buffer overflow in the ok_csv_circular_buffer_read function in ok_csv.c.

How severe is CVE-2021-32263?

CVE-2021-32263 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 0.87% probability of exploitation in the next 30 days.

How do I fix CVE-2021-32263?

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-2021-32263?

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

Scan your code now

Source: NVD / NIST