CVE-2026-42798: littlecms little_cms_color_engine Integer Overflow or Wraparound
CVSS: 4.0v3.1MediumDeferred
AliasesUBUNTU-CVE-2026-42798DEBIAN-CVE-2026-42798
Published 30-04-2026Last modified 30-04-2026
Vulnerability summary
CVE-2026-42798 is a medium (CVSS 4.0) Integer Overflow or Wraparound vulnerability in littlecms little_cms_color_engine. EPSS estimates a 0.15% chance of exploitation in the next 30 days, higher than 4% of scored vulnerabilities.
CVSS score
4.0/10
010
Medium · v3.1 (CVE.org)EPSS score
0.15%
0%100%
Low · +0.03 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Advisory lineage
Upstream 0 · Downstream 4 · Related 5Timeline
- 30-04-2026PublishedVulnerability first disclosed.
- 30-04-2026Last modifiedVulnerability information updated.
Description
Little CMS (lcms2) 2.16 through 2.18 before 2.19 has an integer overflow in ParseCube in cmscgats.c.
CVSS metrics
4 scores · 4 sources · 1 versionMedium 4.0Preferred score · CVE.org (CNA)
CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:LSourcesAll 4 agree
- OSV · UbuntuEcosystem advisory · calculated4.0MediumCVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:L
- OSV · DebianEcosystem advisory · calculated4.0MediumCVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:L
- NVDNIST4.0MediumCVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:L
EPSS trend
Probability
0.15%
Chance of exploitation in the next 30 days
Percentile
4%
Versus all other CVEs
30-day change
+0.03 pp
From 0.13% on 19-09-2026
19-09-202619-10-2026
EPSS score0.15%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Debian1 product
- lcms2< 2.16-2+deb13u2 | < 2.19.1-1
Littlecms1 product
- little_cms_color_engine≥ 2.16, < 2.19
Ubuntu1 product
- lcms2< 2.16-2ubuntu0.2 | < 2.17-1ubuntu0.2
3 vendors · 3 products
