CVE catalog

CVE-2026-4739

Integer Overflow or Wraparound vulnerability in InsightSoftwareConsortium ITK (‎Modules/ThirdParty/Expat/src/expat modules).This issue affects ITK: before 2.7.1.

[CVE catalog]

Severity: Critical · CVSS 9.4
Published: Mar 24, 2026, 3:19:28 AM UTC
Source: [NVD] · [CVE record]
EPSS: 0.26% · Oct 25, 2026

Integer Overflow or Wraparound vulnerability in InsightSoftwareConsortium ITK (‎Modules/ThirdParty/Expat/src/expat modules).This issue affects ITK: before 2.7.1.

Vulnerable and fixed packages

Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.

Distribution	Package	Release	Version	Status
Debian	insighttoolkit4	bookworm	`4.13.3withdata-dfsg2-4+deb12u1`	vulnerable
Debian	insighttoolkit5	sid	`5.4.7-1`	vulnerable
Debian	insighttoolkit5	forky	`5.4.7-1`	vulnerable
Debian	insighttoolkit5	trixie	`5.4.3-5`	vulnerable
Debian	insighttoolkit5	bookworm	`5.2.1-5+deb12u1`	vulnerable
Cpe	insighttoolkit4	Not reported	Not reported	vulnerable
Cpe	insighttoolkit5	Not reported	Not reported	vulnerable

Fixed-version evidence

Distribution	Package	Type	Release	Fixed version	Urgency	Origin	Bugs
Debian	insighttoolkit4	source	bookworm	`(unfixed)`	unimportant	Not reported	Not reported
Debian	insighttoolkit5	source	sid	`(unfixed)`	unimportant	Not reported	Not reported
Debian	insighttoolkit5	source	forky	`(unfixed)`	unimportant	Not reported	Not reported
Debian	insighttoolkit5	source	trixie	`(unfixed)`	unimportant	Not reported	Not reported
Debian	insighttoolkit5	source	bookworm	`(unfixed)`	unimportant	Not reported	Not reported

OpenFactory catalog packages

[Debian 12 (Bookworm)]

[insighttoolkit4-examples]Affected
Source package: [insighttoolkit4]
Details (2)
- 4.13.3withdata-dfsg2-4+deb12u1 · all · bookworm
  Affected
  nvd · insighttoolkit4 · debian · bookworm; nvd · insighttoolkit4 · debian · 12
- 4.13.3withdata-dfsg2-4+deb12u1 · all · bookworm
  Affected
  nvd · insighttoolkit4 · debian · bookworm; nvd · insighttoolkit4 · debian · 12
[insighttoolkit5-examples]Affected
Source package: [insighttoolkit5]
Details (2)
- 5.2.1-5+deb12u1 · all · bookworm
  Affected
  nvd · insighttoolkit5 · debian · bookworm; nvd · insighttoolkit5 · debian · 12
- 5.2.1-5+deb12u1 · all · bookworm
  Affected
  nvd · insighttoolkit5 · debian · bookworm; nvd · insighttoolkit5 · debian · 12
[libinsighttoolkit4.13]Affected
Source package: [insighttoolkit4]
Details (1)
- 4.13.3withdata-dfsg2-4+deb12u1 · amd64 · bookworm
  Affected
  nvd · insighttoolkit4 · debian · bookworm; nvd · insighttoolkit4 · debian · 12
[libinsighttoolkit4-dev]Affected
Source package: [insighttoolkit4]
Details (1)
- 4.13.3withdata-dfsg2-4+deb12u1 · amd64 · bookworm
  Affected
  nvd · insighttoolkit4 · debian · bookworm; nvd · insighttoolkit4 · debian · 12
[libinsighttoolkit5.2]Affected
Source package: [insighttoolkit5]
Details (1)
- 5.2.1-5+deb12u1 · amd64 · bookworm
  Affected
  nvd · insighttoolkit5 · debian · bookworm; nvd · insighttoolkit5 · debian · 12
[libinsighttoolkit5-dev]Affected
Source package: [insighttoolkit5]
Details (1)
- 5.2.1-5+deb12u1 · amd64 · bookworm
  Affected
  nvd · insighttoolkit5 · debian · bookworm; nvd · insighttoolkit5 · debian · 12

[Debian 13 (Trixie)]

[insighttoolkit5-examples]Affected
Source package: [insighttoolkit5]
Details (2)
- 5.4.3-5 · all · trixie
  Affected
  nvd · insighttoolkit5 · debian · 13
- 5.4.3-5 · all · trixie
  Affected
  nvd · insighttoolkit5 · debian · 13
[libinsighttoolkit5.4]Affected
Source package: [insighttoolkit5]
Details (1)
- 5.4.3-5 · amd64 · trixie
  Affected
  nvd · insighttoolkit5 · debian · 13
[libinsighttoolkit5-dev]Affected
Source package: [insighttoolkit5]
Details (1)
- 5.4.3-5 · amd64 · trixie
  Affected
  nvd · insighttoolkit5 · debian · 13

Observed: Oct 23, 2026, 10:39:04 PM UTC

References

[Debian Security Tracker] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX]