CVE-2026-40183
ImageMagick has a heap buffer overflow when encoding JXL image with a 16-bit float
5.5
MEDIUM
CVSS 3.1
EPSS 0.01%
Description
ImageMagick is free and open-source software used for editing and manipulating digital images. In versions below 7.1.2-19, the JXL encoder has an heap write overflow when a user specifies that the image should be encoded as 16 bit floats. This issue has been fixed in version 7.1.2-19.
How to fix CVE-2026-40183
To remediate CVE-2026-40183, upgrade the affected package to a fixed version below.
- —upgrade to 8:7.1.1.43+dfsg1-1+deb13u8 or later
- —upgrade to 14.12.0 or later
- —upgrade to 14.12.0 or later
- —upgrade to 14.12.0 or later
- —upgrade to 14.12.0 or later
- —upgrade to 14.12.0 or later
- —upgrade to 14.12.0 or later
- —upgrade to 14.12.0 or later
- —upgrade to 14.12.0 or later
- —upgrade to 14.12.0 or later
- —upgrade to 14.12.0 or later
- —upgrade to 14.12.0 or later
- —upgrade to 14.12.0 or later
- —upgrade to 14.12.0 or later
- —upgrade to 14.12.0 or later
- —upgrade to 14.12.0 or later
Is CVE-2026-40183 being exploited?
Low — EPSS is 0.0%, meaning exploitation activity has not been observed at scale.
Affected packages (18)
- from 0, < 8:7.1.1.43+dfsg1-1+deb13u8
- from 0, < 14.12.0
- from 0, < 14.12.0
- from 0, < 14.12.0
- from 0, < 14.12.0
- from 0, < 14.12.0
- from 0, < 14.12.0
- from 0, < 14.12.0
- from 0, < 14.12.0
- from 0, < 14.12.0
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM5.5 | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H |