CVE-2025-3408: A vulnerability was found in Nothings stb up to f056911

Q: How do I fix CVE-2025-3408?

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

Q: Is CVE-2025-3408 being exploited?

CVE-2025-3408 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-2025-3408 affect?

CVE-2025-3408 affects stb image.h. Severity is medium (CVSS 6.3). A vulnerability was found in Nothings stb up to f056911. It has been rated as critical. Affected by this issue is the function stb_dupreplace. The manipulation leads to integer overflow. The attack may be launched remotely. Continious deliv

Q: How urgent is CVE-2025-3408?

Priority 33/100. No elevated risk signals yet.

Routine

MEDIUM 6.3UPGRADE

CVE-2025-3408 is a medium-severity flaw (CVSS 6.3) 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 rated as critical. Affected by this issue is the function stb_dupreplace. The manipulation leads to integer overflow. The attack may be launched remotely. Continious delivery with rolling releases is used by this product. Therefore, no version details of affected nor updated releases are available. The vendor was contacted early about this disclosure but did not respond in any w

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	6.3 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.5% (top 57%)
CISA exploited list	No
Weakness	CWE-189, CWE-190
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-2025-3408?

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

Is CVE-2025-3408 being exploited?

CVE-2025-3408 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-2025-3408 affect?

CVE-2025-3408 affects stb image.h. Severity is medium (CVSS 6.3). A vulnerability was found in Nothings stb up to f056911. It has been rated as critical. Affected by this issue is the function stb_dupreplace. The manipulation leads to integer overflow. The attack may be launched remotely. Continious deliv

How urgent is CVE-2025-3408?

Priority 33/100. 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-2025-3407 MEDIUM 6.3 UPGRADE A vulnerability was found in Nothings stb up to f056911
CVE-2025-3406 MEDIUM 4.3 UPGRADE A vulnerability was found in Nothings stb up to f056911

References

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