What is CVE-2023-43898?

CVE-2023-43898 is a medium-severity vulnerability in Nothings Stb Image.h, classified under NULL Pointer Dereference. CVSS score: 5.5/10. Published 2023-10-03.

How severe is CVE-2023-43898?

Medium severity. CVSS v3 base score is 5.5 out of 10.

NULL pointer dereference in Nothings Stb Image.h

CVE-2023-43898

Nothings stb 2.28 was discovered to contain a Null Pointer Dereference via the function stbi__convert_format. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted pic file.

Published 2023-10-03 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.003 (20.6th percentile), scored 2026-10-01.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 21st percentile — 20.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000

Affected products

Nothings Stb Image.h — versions 2.28

Weakness classification (CWE)

CWE-476 — NULL Pointer Dereference

References

github.com/nothings/stb/issues/1452 (Exploit, Patch, Third Party Advisory, Issue Tracking)
github.com/peccc/null-stb (Exploit)
github.com/nothings/stb/pull/1454 (Patch, Issue Tracking)

Frequently asked questions

What is CVE-2023-43898?: CVE-2023-43898 is a medium-severity vulnerability in Nothings Stb Image.h, classified under NULL Pointer Dereference. CVSS score: 5.5/10. Published 2023-10-03.
How severe is CVE-2023-43898?: Medium severity. CVSS v3 base score is 5.5 out of 10.