Memory disclosure and crashes via undersized LUT
Published Apr 30, 2026 · Updated Apr 30, 2026
Integer overflow in ParseCube in Little CMS Color Engine 2.16 through 2.18 allows local users to crash consumers or indirectly disclose memory. ParseCube cubes the attacker-controlled LUT size in a signed int before allocating its three-channel float table, so overflow can produce an undersized allocation. The local gate is a consuming application parsing a crafted CUBE file; the record reports memory disclosure and service interruption, not data modification.
Summary
What happened
Integer overflow in ParseCube in Little CMS Color Engine 2.16 through 2.18 allows local users to crash consumers or indirectly disclose memory. ParseCube cubes the attacker-controlled LUT size in a signed int before allocating its three-channel float table, so overflow can produce an undersized allocation. The local gate is a consuming application parsing a crafted CUBE file; the record reports memory disclosure and service interruption, not data modification.
The record
- CVE
- CVE-2026-42798
- Published
- Apr 30, 2026
- Updated
- Apr 30, 2026
- Vendor
- Little CMS
- Product
- Little CMS Color Engine
- Classifications
- CWE-190
- Attack vector
- local
- Privileges
- unauthenticated
Timeline
How it unfolded
- Apr 30, 2026CVE publishedPublication date reported by the CVE source.
- Apr 30, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
Compare your product and version with the public record. A matching version still requires validation against your environment.
Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=2.16 <2.19
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
No public exploit references are available in this record.
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
See the directory against your own environment.
Your stack
Check the software in your environment
Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.
Book a demo