CVE-2021-44339

Name: CVE-2021-44339
Creator: NVD / NIST
Published: 2022-02-28T16:15:07.88+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.8/10EPSS 0.72%

Last modified Jun 17, 2026

CVE-2021-44339 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. David Brackeen ok-file-formats 203defd is vulnerable to Buffer Overflow. When the function of the ok-file-formats project is used, a heap-buffer-overflow occurred in function ok_png_transform_scanline() in "/ok_png.c:712".. EPSS estimates a 0.72% chance of exploitation in the next 30 days.

Description

David Brackeen ok-file-formats 203defd is vulnerable to Buffer Overflow. When the function of the ok-file-formats project is used, a heap-buffer-overflow occurred in function ok_png_transform_scanline() in "/ok_png.c:712".

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

0.72%

49.2th 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	2021-06-05

References

https://github.com/brackeen/ok-file-formats/issues/15Exploit, Issue Tracking, Third Party Advisory
https://github.com/brackeen/ok-file-formats/issues/15Exploit, Issue Tracking, Third Party Advisory

Timeline

Published: Feb 28, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-44339?

How severe is CVE-2021-44339?

CVE-2021-44339 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 0.72% probability of exploitation in the next 30 days.

How do I fix CVE-2021-44339?

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-2021-44339?

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

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Source: NVD / NIST