What’s Vulnerable › Vulnerabilities

CVE-2019-19777

• Severity: high (CVSS 8.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.4% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2019-12-13 · updated 2026-06-17
• Weakness: CWE-125

Description

stb_image.h (aka the stb image loader) 2.23, as used in libsixel and other products, has a heap-based buffer over-read in stbi__load_main.

Affected products

• nothings stb: 2.23
• saitoha libsixel: 1.8.2

References

• https://github.com/saitoha/libsixel/issues/109
• https://github.com/saitoha/libsixel/issues/109

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