What is CVE-2021-44335?

CVE-2021-44335 is a high-severity vulnerability in Ok-File-Formats Project, classified under Out-of-bounds Write. CVSS score: 7.8/10. Published 2022-03-03.

How severe is CVE-2021-44335?

High severity. CVSS v3 base score is 7.8 out of 10.

Buffer overflow in Ok-File-Formats Project

CVE-2021-44335

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 occurs in function ok_png_transform_scanline() in "/ok_png.c:533".

Vulnerability class: Buffer Overflow

Published 2022-03-03 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.007 (52.4th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 52nd percentile — 52.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: 0.000

Affected products

Ok-File-Formats Project — versions 2021-06-05

Weakness classification (CWE)

CWE-787 — Out-of-bounds Write

References

github.com/brackeen/ok-file-formats/issues/17 (Exploit, Third Party Advisory, Issue Tracking)

Frequently asked questions

What is CVE-2021-44335?: CVE-2021-44335 is a high-severity vulnerability in Ok-File-Formats Project, classified under Out-of-bounds Write. CVSS score: 7.8/10. Published 2022-03-03.
How severe is CVE-2021-44335?: High severity. CVSS v3 base score is 7.8 out of 10.