CVE-2021-32263: ok-file-formats through 2021-04-29 has a heap-based buffer overflow in the ok_csv_circular_buffer_read functio

Q: How do I fix CVE-2021-32263?

ok-file-formats: upgrade to newer than 2021-04-29. Exact commands for each OS are on this page.

Q: Is CVE-2021-32263 being exploited?

CVE-2021-32263 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2021-32263 affect?

CVE-2021-32263 affects ok-file-formats. Severity is high (CVSS 7.8). 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.

Q: How urgent is CVE-2021-32263?

Priority 47/100. High severity; Public exploit reference

This month

HIGH 7.8UPGRADE

CVE-2021-32263 is a high-severity flaw (CVSS 7.8) affecting ok-file-formats. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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.

Why this priority

High severity
Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	7.8 (High)
Attack vector	Local
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.9% (top 41%)
CISA exploited list	No
Weakness	CWE-787
Published	2021-08-24
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: ok-file-formats project

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2021-08-24 18:15 UTCPublished CVE record published
2026-06-17 03:52 UTCUpdated Record last modified

ok-file-formats project ok-file-formats UPGRADE

Affected: <= 2021-04-29

Fixed in: newer than 2021-04-29

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy ok-file-formats || rpm -q ok-file-formats || ok-file-formats --version

2. UPGRADE to newer than 2021-04-29 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade ok-file-formats

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade ok-file-formats

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2021-32263?

ok-file-formats: upgrade to newer than 2021-04-29. Exact commands for each OS are on this page.

Is CVE-2021-32263 being exploited?

CVE-2021-32263 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2021-32263 affect?

CVE-2021-32263 affects ok-file-formats. Severity is high (CVSS 7.8). 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 urgent is CVE-2021-32263?

Priority 47/100. High severity; Public exploit reference

Related CVEs

CVE-2021-44343 HIGH 7.8 DOWNGRADE David Brackeen ok-file-formats 203defd is vulnerable to Buffer Overflow
CVE-2021-44342 HIGH 7.8 DOWNGRADE David Brackeen ok-file-formats 203defd is vulnerable to Buffer Overflow via function ok_png_transform_scanline
CVE-2021-44340 HIGH 7.8 MITIGATE David Brackeen ok-file-formats dev version is vulnerable to Buffer Overflow
CVE-2021-44339 HIGH 7.8 DOWNGRADE David Brackeen ok-file-formats 203defd is vulnerable to Buffer Overflow
CVE-2021-44335 HIGH 7.8 DOWNGRADE David Brackeen ok-file-formats 203defd is vulnerable to Buffer Overflow

References

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