CVE-2020-21548
8.8
HIGH
CVSS 3.1
EPSS 1.0%
Description
Libsixel 1.8.3 contains a heap-based buffer overflow in the sixel_encode_highcolor function in tosixel.c.
How to fix CVE-2020-21548
To remediate CVE-2020-21548, upgrade the affected package to a fixed version below.
- Debian/libsixel—upgrade to 1.8.6-1 or later
Is CVE-2020-21548 being exploited?
Low — EPSS is 1.0%, meaning exploitation activity has not been observed at scale.
Affected packages (1)
- from 0, < 1.8.6-1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH8.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |