CVE-2026-4739

9.4 criticalEPSS 0.3%

Critical (9.4). EPSS 0.3% chance of exploitation in the next 30 days.

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

Severity

CVSS 4.0

9.4 critical

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:A/S:P/AU:Y/R:U/V:C/RE:M/U:Amber

EPSS: 0.3% chance of exploitation in the next 30 days; higher than 18% of CVEs (scores of 2026-10-31)
CWE: CWE-190
Published: 2026-03-24
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

References

https://github.com/InsightSoftwareConsortium/ITK/pull/5351

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