CVE-2025-3409: A vulnerability classified as critical has been found in Nothings stb up to f056911

Q: How do I fix CVE-2025-3409?

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

Q: Is CVE-2025-3409 being exploited?

CVE-2025-3409 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-2025-3409 affect?

CVE-2025-3409 affects stb image.h. Severity is medium (CVSS 6.3). A vulnerability classified as critical has been found in Nothings stb up to f056911. This affects the function stb_include_string. The manipulation of the argument path_to_includes leads to stack-based buffer overflow. It is possible to ini

Q: How urgent is CVE-2025-3409?

Priority 33/100. No elevated risk signals yet.

Routine

MEDIUM 6.3UPGRADE

CVE-2025-3409 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 classified as critical has been found in Nothings stb up to f056911. This affects the function stb_include_string. The manipulation of the argument path_to_includes leads to stack-based buffer overflow. It is possible to initiate the attack remotely. This product does not use versioning. This is why information about affected and unaffected releases are unavailable. The vendor was contacted early about this disclosure but did not

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 56%)
CISA exploited list	No
Weakness	CWE-119, CWE-121
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 05:15 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-2025-3409?

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

Is CVE-2025-3409 being exploited?

CVE-2025-3409 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-2025-3409 affect?

CVE-2025-3409 affects stb image.h. Severity is medium (CVSS 6.3). A vulnerability classified as critical has been found in Nothings stb up to f056911. This affects the function stb_include_string. The manipulation of the argument path_to_includes leads to stack-based buffer overflow. It is possible to ini

How urgent is CVE-2025-3409?

Priority 33/100. No elevated risk signals yet.

Related CVEs

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
CVE-2025-3406 MEDIUM 4.3 UPGRADE A vulnerability was found in Nothings stb up to f056911
CVE-2023-45667 MEDIUM 5.3 DOWNGRADE stb_image is a single file MIT licensed library for processing images. If `stbi__load_gif_main` in `stbi_load
CVE-2023-45666 HIGH 7.3 DOWNGRADE stb_image is a single file MIT licensed library for processing images

References

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