Public proof of concept

CVE-2023-45667

A public proof of concept exists; no exploitation attested.

Published2023-10-21
WeaknessCWE-476

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

stb_image is a single file MIT licensed library for processing images. If `stbi__load_gif_main` in `stbi_load_gif_from_memory` fails it returns a null pointer and may keep the `z` variable uninitialized. In case the caller also sets the flip vertically flag, it continues and calls `stbi__vertical_flip_slices` with the null pointer result value and the uninitialized `z` value. This may result in a program crash.

Timeline

dates in UTC

2023-10-2100:15CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-10-23 21:37 UTC

Indicators tagged with this CVE, per day0 indicators over 7 days

Block these indicators

Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2023-45667?format=txt
CSV export: https://api.ismalicious.com/edl/cve/CVE-2023-45667?format=csv
TAXII collection of exploited CVEs
The EDL and CSV take an API key on the Pro plan.

Versions per branch

CISA-ADP · NVD

Nothings stb image

Branch	Affected	Fixed in	Source
2.28	≤ 2.28	no fix published	CISA-ADP

Nothings stb image.h

Branch	Affected	Fixed in	Source
2.28	= 2.28	no fix published	NVD

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Fix

No fix published by the sources we read yet. NVD record

Detection

Nuclei template: none so far
Exploit-DB: no entry
Proof-of-concept repositories: none listed

Sources

CISA-ADPSSVC decisionpoc2024-09-12
OpenCVESSVC decisionpoc—
CNACVSS 3.15.3read 2026-10-23
NVDCVSS 3.17.5read 2026-10-23
CNAweakness (CWE)CWE-476read 2026-10-23
NVDweakness (CWE)CWE-476read 2026-10-23
FIRST EPSSEPSS score1.3 %2026-10-23

Technical details

CVSS v3 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Published: 2023-10-21
Last Modified: 2026-06-17
NVD status: Modified

Frequently asked questions

What is CVE-2023-45667?

Is CVE-2023-45667 actively exploited?

A proof-of-concept exploit exists for CVE-2023-45667, but active exploitation has not been confirmed at this time.

What is the CVSS score for CVE-2023-45667?

CVE-2023-45667 has a CVSS v3 base score of 7.5 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

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