Is CVE-2026-42798 in the CISA KEV catalog?

No. CVE-2026-42798 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2026-42798?

CVE-2026-42798 has a CVSS v3 base score of 4.0 (Moderate).

What is the EPSS score for CVE-2026-42798?

CVE-2026-42798 has an EPSS score of 0.13% (3th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2026-42798?

Upgrade lcms2 on debian 13 to 2.16-2+deb13u2 or later. Fixes are available for 3 affected products.

CVE & CISA-KEV Catalog

CVE-2026-42798

MEDIUM

4.0

CVSS v3

NVD

Description

Little CMS (lcms2) 2.16 through 2.18 before 2.19 has an integer overflow in ParseCube in cmscgats.c.

CWE-190Integer Overflow

How to fix

Remediation Available

lcms2Debian

Fixed in:2.16-2+deb13u2CVE-2026-42798

Fixed in:2.19.1-1CVE-2026-42798

lcms2Ubuntu

Fixed in:2.16-2ubuntu0.2USN-8250-1

liblcms2-2Ubuntu

Fixed in:2.16-2ubuntu0.2USN-8250-1

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorLocal

Attack ComplexityHigh

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityLow

IntegrityNone

AvailabilityLow

CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:L

Exploit Intelligence

0.13%probability of exploitation in 30 days

3rdpercentile

Low risk: more likely to be exploited than 3% of all known CVEs.

References

Other references3

Related Vulnerabilities

Other CWE-190 (Integer Overflow) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2020-16040	Medium	6.5	100%	-	Fix
CVE-2019-11477	High	7.5	99%	-	Fix
CVE-2023-44443	High	7.8	94%	-	Fix
CVE-2014-0569	High	9.3	90%	-	-
CVE-2017-3599	High	7.5	90%	-	Fix
CVE-2023-21716	Critical	9.8	82%	-	Fix

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-04-30.