CVE-2026-41254: Little CMS (lcms2) through 2.18 has an integer overflow in CubeSize in cmslut.c because the overflow check is

Q: How do I fix CVE-2026-41254?

little cms: upgrade to newer than 2.18. Exact commands for each OS are on this page.

Q: Is CVE-2026-41254 being exploited?

CVE-2026-41254 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-2026-41254 affect?

CVE-2026-41254 affects little cms. Severity is medium (CVSS 4.0). Little CMS (lcms2) through 2.18 has an integer overflow in CubeSize in cmslut.c because the overflow check is performed after the multiplication.

Q: How urgent is CVE-2026-41254?

Priority 27/100. Public exploit reference

Routine

MEDIUM 4.0UPGRADE

CVE-2026-41254 is a medium-severity flaw (CVSS 4.0) affecting little cms. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Little CMS (lcms2) through 2.18 has an integer overflow in CubeSize in cmslut.c because the overflow check is performed after the multiplication.

Why this priority

Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	4.0 (Medium)
Attack vector	Local
Attack complexity	High
Privileges needed	None
User interaction	None
EPSS exploit chance	0.4% (top 70%)
CISA exploited list	No
Weakness	CWE-696, CWE-190
Published	2026-04-18
Last modified	2026-10-26

Publisher (CNA): MITRE · Vendor: littlecms

Last updated 2026-10-26 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-04-18 07:16 UTCPublished CVE record published
2026-10-26 21:10 UTCUpdated Record last modified

littlecms little cms UPGRADE

Affected: <= 2.18

Fixed in: newer than 2.18

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy little-cms || rpm -q little-cms || little-cms --version

2. UPGRADE to newer than 2.18 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade little-cms

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade little-cms

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Advisories and coverage

Official advisories

AlmaLinux Errata: [ALSA-2026:42899] Important: java-25-openjdk security update 2026-08-06
AlmaLinux Errata: [ALSA-2026:42895] Important: java-21-openjdk security update 2026-07-24
AlmaLinux Errata: [ALSA-2026:42887] Important: java-17-openjdk security update 2026-07-24
AlmaLinux Errata: [ALSA-2026:42877] Important: java-1.8.0-openjdk security update 2026-07-24

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-2026-41254?

little cms: upgrade to newer than 2.18. Exact commands for each OS are on this page.

Is CVE-2026-41254 being exploited?

CVE-2026-41254 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-2026-41254 affect?

CVE-2026-41254 affects little cms. Severity is medium (CVSS 4.0). Little CMS (lcms2) through 2.18 has an integer overflow in CubeSize in cmslut.c because the overflow check is performed after the multiplication.

How urgent is CVE-2026-41254?

Priority 27/100. Public exploit reference

References

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