CVE-2021-46700

MEDIUM

libsixel 1.8.6 - Double Free in sixel_encoder_output_without_macro

Title source: llm
STIX 2.1

Description

In libsixel 1.8.6, sixel_encoder_output_without_macro (called from sixel_encoder_encode_frame in encoder.c) has a double free.

References (1)

Core 1
Core References
Exploit, Issue Tracking, Third Party Advisory x_refsource_misc
https://github.com/saitoha/libsixel/issues/158

Scores

CVSS v3 6.5
EPSS 0.0081
EPSS Percentile 52.0%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Details

CWE
CWE-415
Status published
Products (2)
libsixel_project/libsixel 1.8.6
saitoha/libsixel 1.8.6
Published Feb 19, 2022
Tracked Since Feb 18, 2026