CVE-2019-20140

Name: CVE-2019-20140
Creator: NVD / NIST
Published: 2019-12-30T17:15:20.56+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.8/10EPSS 1.12%

Last modified Jun 17, 2026

CVE-2019-20140 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. An issue was discovered in libsixel 1.8.4. There is a heap-based buffer overflow in the function gif_out_code at fromgif.c.. EPSS estimates a 1.12% chance of exploitation in the next 30 days.

Description

An issue was discovered in libsixel 1.8.4. There is a heap-based buffer overflow in the function gif_out_code at fromgif.c.

Metrics

CVSS 3.1

8.8/10

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

EPSS Probability

1.12%

62.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-787

Affected Software

Vendor	Product	Versions
Saitoha	Libsixel	1.8.4

References

https://github.com/saitoha/libsixel/issues/122Exploit, Patch, Third Party Advisory
https://github.com/saitoha/libsixel/issues/122Exploit, Patch, Third Party Advisory

Timeline

Published: Dec 30, 2019
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2019-20140?

An issue was discovered in libsixel 1.8.4. There is a heap-based buffer overflow in the function gif_out_code at fromgif.c.

How severe is CVE-2019-20140?

CVE-2019-20140 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 1.12% probability of exploitation in the next 30 days.

How do I fix CVE-2019-20140?

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-2019-20140?

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

Scan your code now

Source: NVD / NIST