What’s Vulnerable › Vulnerabilities

CVE-2019-20024

• Severity: medium (CVSS 6.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.0% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2019-12-27 · updated 2026-06-17
• Weakness: CWE-787

Description

A heap-based buffer overflow was discovered in image_buffer_resize in fromsixel.c in libsixel before 1.8.4.

Affected products

• saitoha libsixel: before 1.8.4 — fixed in 1.8.4

How to fix

Upgrade to a fixed version: saitoha libsixel 1.8.4. Check the vendor advisory for mitigations.

References

• https://github.com/saitoha/libsixel/issues/121
• https://github.com/saitoha/libsixel/issues/121

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