Is CVE-2019-19777 actively exploited?

CVE-2019-19777 has no public evidence of in-the-wild exploitation as of 2026-04-24.

What is the CVSS score for CVE-2019-19777?

CVE-2019-19777 has a CVSS score of 8.8 (HIGH severity). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

Patch guidance is available from nothings security advisories. CVEDatabase generates AI-assisted remediation guidance on demand for CVE-2019-19777.

2 products: nothings stb image.h, saitoha libsixel.

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.

Primary Vendor: NOTHINGS
Published: 12/13/2019
Last Modified: 4/24/2026
Source: NIST NVD
Note: Verify all details with official vendor sources before applying patches.