CVE-2020-11721

PoC —

CVSS 3.1

6.5 medium

EPSS

<1%p59

Published

Apr 12, 2020 (Apr 12, 2020)

Modified

Jun 17, 2026

Description

load_png in loader.c in libsixel.a in libsixel 1.8.6 has an uninitialized pointer leading to an invalid call to free, which can cause a denial of service.

Vendors: saitoha
Products: libsixel
Weakness: CWE-824
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

NVD CVE.org GitHub PoCs EPSS (0.9%)

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