CVE-2021-46700

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

CVSS v3.1 NVD

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

CVSS v2.0 NVD

4.3 MEDIUMAV:N/AC:M/Au:N/C:N/I:N/A:P

EPSS

0.95% chance of exploitation in the next 30 days, 61st percentile

Published

2022-02-19

Updated

2024-08-04

Proof-of-concept exploits (1)

• saitoha/libsixel/issues/1582853★ · 2026-10-13

References

• CVE Record
• NVD entry

Related

• CVE-2019-11024
• CVE-2019-19777
• CVE-2019-19778
• CVE-2019-20022
• CVE-2019-20023
• CVE-2019-20024