CVE-2026-25898

Description

ImageMagick is free and open-source software used for editing and manipulating digital images. Prior to versions 7.1.2-15 and 6.9.13-40, the UIL and XPM image encoder do not validate the pixel index value returned by `GetPixelIndex()` before using it as an array subscript. In HDRI builds, `Quantum` is a floating-point type, so pixel index values can be negative. An attacker can craft an image with negative pixel index values to trigger a global buffer overflow read during conversion, leading to information disclosure or a process crash. Versions 7.1.2-15 and 6.9.13-40 contain a patch.

How to fix CVE-2026-25898

To remediate CVE-2026-25898, upgrade the affected package to a fixed version below.

—upgrade to 8:6.9.11.60+dfsg-1.3+deb11u10 or later
—upgrade to 14.10.3 or later
—upgrade to 14.10.3 or later
—upgrade to 14.10.3 or later
—upgrade to 14.10.3 or later
—upgrade to 14.10.3 or later
—upgrade to 14.10.3 or later
—upgrade to 14.10.3 or later
—upgrade to 14.10.3 or later
—upgrade to 14.10.3 or later
—upgrade to 14.10.3 or later
—upgrade to 14.10.3 or later
—upgrade to 14.10.3 or later
—upgrade to 14.10.3 or later
—

Is CVE-2026-25898 being exploited?

Low — EPSS is 0.0%, meaning exploitation activity has not been observed at scale.

Affected packages (18)

from 0, < 8:6.9.11.60+dfsg-1.3+deb11u10
from 0, < 14.10.3
from 0, < 14.10.3
from 0, < 14.10.3
from 0, < 14.10.3
from 0, < 14.10.3
from 0, < 14.10.3
from 0, < 14.10.3
from 0, < 14.10.3
from 0, < 14.10.3

CVSS scores

Source	Version	Severity	Vector
osv	CVSS 3.1	MEDIUM6.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L