CVE-2025-3406 Nothings stb Header Array stbhw_build_tileset_from_image out-of-bounds
An out-of-bounds read in the stb library's tileset builder allows remote attackers to cause denial of service or disclose memory contents.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2025-3406?
CVE-2025-3406 is a medium-severity memory corruption vulnerability in Nothings stb, published on 8 Apr 2025. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
A vulnerability was found in Nothings stb up to f056911. It has been classified as problematic. Affected is the function stbhw_build_tileset_from_image of the component Header Array Handler. The manipulation of the argument w leads to out-of-bounds read. It is possible to launch the attack remotely. This product is using a rolling release to provide continious delivery. Therefore, no version details for affected nor updated releases are available. The vendor was contacted early about this disclosure but did not respond in any way.
Which versions are affected by CVE-2025-3406?
It affects 1 product.
Products include Nothings Stb Image.h.
How do I fix CVE-2025-3406?
No fix has been published for CVE-2025-3406 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2025-3406 being exploited?
There is no known exploitation of CVE-2025-3406 in the wild and no public exploit code.
Other vulnerabilities in Nothings stb
- CVE-2019-19777 Memory corruption in n/a
- CVE-2023-45664 Double-free in stbi__load_gif_main_outofmem in stb_image
- CVE-2023-45666 Possible double-free or memory leak in stbi__load_gif_main in stb_image
- CVE-2023-43281 Use after free in n/a
- CVE-2023-45661 Wild address read in stbi__gif_load_next in stb_image
Sources
Also known as DEBIAN-CVE-2025-3406, GHSA-7249-98jq-4p25, UBUNTU-CVE-2025-3406.