CVE-2020-23109

Name: CVE-2020-23109
Creator: NVD / NIST
Published: 2021-11-03T17:15:08.027+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.1/10EPSS 1.24%

Last modified Jun 17, 2026

CVE-2020-23109 is a high-severity vulnerability rated 8.1/10 on the CVSS scale. Buffer overflow vulnerability in function convert_colorspace in heif_colorconversion.cc in libheif v1.6.2, allows attackers to cause a denial of service and disclose sensitive information, via a crafted HEIF file.. EPSS estimates a 1.24% chance of exploitation in the next 30 days.

Description

Buffer overflow vulnerability in function convert_colorspace in heif_colorconversion.cc in libheif v1.6.2, allows attackers to cause a denial of service and disclose sensitive information, via a crafted HEIF file.

Metrics

CVSS 3.1

8.1/10

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

EPSS Probability

1.24%

65.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-120

Affected Software

Vendor	Product	Versions
Struktur	Libheif	1.6.2

References

https://github.com/strukturag/libheif/issues/207Exploit, Third Party Advisory
https://github.com/strukturag/libheif/issues/207Exploit, Third Party Advisory

Timeline

Published: Nov 3, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-23109?

How severe is CVE-2020-23109?

CVE-2020-23109 has a CVSS score of 8.1/10 (HIGH severity). The EPSS model estimates a 1.24% probability of exploitation in the next 30 days.

How do I fix CVE-2020-23109?

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-2020-23109?

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

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Source: NVD / NIST