What is CVE-2019-20094?

CVE-2019-20094 is a high-severity vulnerability in Saitoha Libsixel, classified under Out-of-bounds Write. CVSS score: 8.8/10. Published 2019-12-30.

How severe is CVE-2019-20094?

High severity. CVSS v3 base score is 8.8 out of 10.

Buffer overflow in Saitoha Libsixel

CVE-2019-20094

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

Vulnerability class: Buffer Overflow

Published 2019-12-30 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.010 (63.6th percentile), scored 2026-10-20.

Low probability of exploitation in the next 30 days, but still tracked. 64th percentile — 63.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.010 · newest: 0.010 · change: 0.000

Affected products

Saitoha Libsixel — versions 1.8.4

Weakness classification (CWE)

CWE-787 — Out-of-bounds Write

References

github.com/saitoha/libsixel/issues/125 (Exploit, Third Party Advisory, Issue Tracking)

Frequently asked questions

What is CVE-2019-20094?: CVE-2019-20094 is a high-severity vulnerability in Saitoha Libsixel, classified under Out-of-bounds Write. CVSS score: 8.8/10. Published 2019-12-30.
How severe is CVE-2019-20094?: High severity. CVSS v3 base score is 8.8 out of 10.