CVE-2020-23706

Name: CVE-2020-23706
Creator: NVD / NIST
Published: 2021-07-15T22:15:09.24+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.5/10EPSS 1.01%

Last modified Jun 17, 2026

CVE-2020-23706 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. A heap-based buffer overflow vulnerability in the function ok_jpg_decode_block_subsequent_scan() ok_jpg.c:1102 of ok-file-formats through 2020-06-26 allows attackers to cause a Denial of Service (DOS) via a crafted jpeg file.. EPSS estimates a 1.01% chance of exploitation in the next 30 days.

Description

A heap-based buffer overflow vulnerability in the function ok_jpg_decode_block_subsequent_scan() ok_jpg.c:1102 of ok-file-formats through 2020-06-26 allows attackers to cause a Denial of Service (DOS) via a crafted jpeg file.

Metrics

CVSS 3.1

6.5/10

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

EPSS Probability

1.01%

58.7th 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	<= 2020-06-26

References

https://github.com/brackeen/ok-file-formats/issues/7Exploit, Issue Tracking, Third Party Advisory
https://github.com/brackeen/ok-file-formats/issues/7Exploit, Issue Tracking, Third Party Advisory

Timeline

Published: Jul 15, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-23706?

How severe is CVE-2020-23706?

CVE-2020-23706 has a CVSS score of 6.5/10 (MEDIUM severity). The EPSS model estimates a 1.01% probability of exploitation in the next 30 days.

How do I fix CVE-2020-23706?

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-2020-23706?

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

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Source: NVD / NIST