CVE-2026-42798 Details
Description
Little CMS (lcms2) 2.16 through 2.18 before 2.19 has an integer overflow in ParseCube in cmscgats.c.
A vulnerability has been identified in Little CMS (lcms2) versions 2.16 through 2.18 prior to 2.19. The issue arises from an integer overflow in the ParseCube function within the cmscgats.c file. This flaw allows for a heap buffer overflow by miscalculating the size of a Color Look-Up Table (CLUT) during the parsing of ICC profiles, particularly those with certain dimensions that trigger the overflow. The vulnerability can be exploited through various applications that use Little CMS for PDF processing, leading to crashes and potential information leakage.
Users can upgrade to Little CMS version 2.19, which addresses the integer overflow vulnerability in the ParseCube function. This version is available on the Little CMS GitHub repository.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Apr 30, 2026CISA-ADP
Assessed Apr 30, 2026References to Advisories, Solutions, and Tools
By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.
| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/mm2/Little-CMS/commit/6a686019825a89b715d16671f18d049523354176 | [email protected] | Source CodeVendor |
| https://github.com/mm2/Little-CMS/compare/lcms2.18...lcms2.19 | [email protected] | Release NotesVendor |
| https://www.openwall.com/lists/oss-security/2026/04/30/8 | [email protected] | Mailing ListRemedy |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-190 | Integer Overflow or Wraparound | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| Little CMS | <= 2.18 |
CPE
Remediation
| |
Change History
3 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Apr 30, 2026 | New CVE Received | [email protected] |