CVE-2023-43898: nothings stb_image.h NULL Pointer Dereference
CVSS: 5.5v3.1MediumModified
AliasesUBUNTU-CVE-2023-43898DEBIAN-CVE-2023-43898
Published 03-10-2023Last modified 17-06-2025
Vulnerability summary
CVE-2023-43898 is a medium (CVSS 5.5) NULL Pointer Dereference vulnerability in nothings stb_image.h. EPSS estimates a 0.32% chance of exploitation in the next 30 days, higher than 24% of scored vulnerabilities. 2 public exploits are recorded.
CVSS score
5.5/10
010
Medium · v3.1 (CVE.org)EPSS score
0.32%
0%100%
Low · +0.02 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits2github
Timeline
- 03-10-2023PublishedVulnerability first disclosed.
- 17-06-2025Last modifiedVulnerability information updated.
Description
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.
CVSS metrics
4 scores · 4 sources · 1 versionMedium 5.5Preferred score · CVE.org (CNA)
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:HSourcesAll 4 agree
- OSV · UbuntuEcosystem advisory · calculated5.5MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
- OSV · DebianEcosystem advisory · calculated5.5MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
- NVDNIST5.5MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
EPSS trend
Probability
0.32%
Chance of exploitation in the next 30 days
Percentile
24%
Versus all other CVEs
30-day change
+0.02 pp
From 0.30% on 19-09-2026
19-09-202619-10-2026
EPSS score0.32%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
2 foundStb
Maturity: poc
Null Stb
Maturity: poc
Weaknesses
CWE · root causeAffected systems
Debian1 product
- libstbAll versions (No fix recorded)
Nothings1 product
- stb_image.h2.28
Ubuntu1 product
- libstbAll versions (No fix recorded)
3 vendors · 3 products
