{"id":"CVE-2021-27433","details":"ARM mbed-ualloc memory library version 1.3.0 is vulnerable to integer wrap-around in function mbed_krbs, which can lead to arbitrary memory allocation, resulting in unexpected behavior such as a crash or a remote code injection/execution.","modified":"2026-04-10T04:31:32.216832Z","published":"2022-05-03T21:15:08.570Z","references":[{"type":"ADVISORY","url":"https://www.cisa.gov/uscert/ics/advisories/icsa-21-119-04"},{"type":"FIX","url":"https://github.com/ARMmbed/mbed-os/pull/14408"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/armmbed/ualloc","events":[{"introduced":"0"},{"last_affected":"35ab210fb219029a7c388898d641915f869c2a36"}],"database_specific":{"versions":[{"introduced":"0"},{"last_affected":"1.3.0"}]}}],"versions":["beta-release","mbedos-16.01-release","mbedos-16.03-release","mbedos-2016q1-oob1","mbedos-2016q1-oob2","mbedos-2016q1-oob3","mbedos-release-15-11","mbedos-techcon-oob2","v0.0.10","v0.0.2","v0.0.3","v0.0.4","v0.0.5","v0.0.6","v0.0.7","v0.0.8","v0.0.9","v0.1.0","v0.2.0","v0.2.1","v1.0.0","v1.0.1","v1.0.2","v1.0.3","v1.1.0","v1.1.1","v1.2.0","v1.3.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-27433.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"}]}