{"id":"UBUNTU-CVE-2026-63559","details":"An integer overflow in the UA_Variant arrayDimensions product computation in open62541 may allow a remote attacker to read out-of-bounds heap memory, potentially disclosing sensitive information.","modified":"2026-08-06T03:10:24.123131417Z","published":"2026-07-30T22:16:00Z","upstream":["CVE-2026-63559"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-63559"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2026-63559"}],"affected":[{"package":{"name":"open62541","ecosystem":"Ubuntu:26.04:LTS","purl":"pkg:deb/ubuntu/open62541?arch=source&distro=resolute"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.4.11.1-1","1.4.11.1-1build1"],"ecosystem_specific":{"binaries":[{"binary_version":"1.4.11.1-1build1","binary_name":"libopen62541-1.4"},{"binary_name":"libopen62541-1.4-tools","binary_version":"1.4.11.1-1build1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-63559.json"}}],"schema_version":"1.8.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N"},{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N"},{"type":"Ubuntu","score":"medium"}]}