CVE-2025-3406: A vulnerability was found in Nothings stb up to f056911

Q: How do I fix CVE-2025-3406?

stb image.h: upgrade to newer than 2.13. Exact commands for each OS are on this page.

Q: Is CVE-2025-3406 being exploited?

CVE-2025-3406 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2025-3406 affect?

CVE-2025-3406 affects stb image.h. Severity is medium (CVSS 4.3). 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-o

Q: How urgent is CVE-2025-3406?

Priority 27/100. No elevated risk signals yet.

Routine

MEDIUM 4.3UPGRADE

CVE-2025-3406 is a medium-severity flaw (CVSS 4.3) affecting stb image.h. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	4.3 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.6% (top 52%)
CISA exploited list	No
Weakness	CWE-119, CWE-125
Published	2025-04-08
Last modified	2026-06-17

Publisher (CNA): VulDB · Vendor: nothings

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2025-04-08 04:15 UTCPublished CVE record published
2026-06-17 09:19 UTCUpdated Record last modified

nothings stb image.h UPGRADE

Affected: <= 2.13

Fixed in: newer than 2.13

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy stb-image.h || rpm -q stb-image.h || stb-image.h --version

2. UPGRADE to newer than 2.13 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade stb-image.h

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade stb-image.h

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2025-3406?

stb image.h: upgrade to newer than 2.13. Exact commands for each OS are on this page.

Is CVE-2025-3406 being exploited?

CVE-2025-3406 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2025-3406 affect?

CVE-2025-3406 affects stb image.h. Severity is medium (CVSS 4.3). 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-o

How urgent is CVE-2025-3406?

Priority 27/100. No elevated risk signals yet.

Related CVEs

CVE-2025-3409 MEDIUM 6.3 UPGRADE A vulnerability classified as critical has been found in Nothings stb up to f056911
CVE-2025-3408 MEDIUM 6.3 UPGRADE A vulnerability was found in Nothings stb up to f056911
CVE-2025-3407 MEDIUM 6.3 UPGRADE A vulnerability was found in Nothings stb up to f056911

References

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