CVE-2026-117555 GreycLab CImg through 4.0.6 Heap Out-of-Bounds Read via Integer Overflow in _load_bmp()
Medium 6.9
Published
Updated
Check this codebase for CVE-2026-117555 and fix it if it is affected.
What it is: CVE-2026-117555 is a medium-severity vulnerability in GreycLab CImg, published on 27 Oct 2026.
Exploitation: There is no known exploitation of CVE-2026-117555 in the wild and no public exploit code.
Affected product: GreycLab CImg. No package-level version data is available, so check the vendor advisory linked from the reference page.
Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.
Reference: https://insights.sbomify.com/CVE-2026-117555/ (Markdown: https://insights.sbomify.com/CVE-2026-117555/index.md)
- Exploited in the wild
- Not known
- Fix
- None listed
What is CVE-2026-117555?
CVE-2026-117555 is a medium-severity vulnerability in GreycLab CImg, published on 27 Oct 2026.
Official description
CImg through 4.0.6 contains a heap out-of-bounds read vulnerability in the _load_bmp() function of CImg.h caused by an integer overflow in the row byte count. Attackers can supply a crafted BMP file with a large header width that wraps dx_bytes, causing crashes or heap memory disclosure into the decoded image.
Weakness: CWE-190
Which versions are affected by CVE-2026-117555?
How do I fix CVE-2026-117555?
No fix has been published for CVE-2026-117555 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-117555 being exploited?
There is no known exploitation of CVE-2026-117555 in the wild and no public exploit code.
Sources
Also known as DEBIAN-CVE-2026-117555, GHSA-88mq-c93j-j2w3, UBUNTU-CVE-2026-117555.