{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-1998","assignerOrgId":"1af790b2-7ee1-4545-860a-a788eba489b5","state":"PUBLISHED","assignerShortName":"VulDB","dateReserved":"2026-02-05T17:09:46.272Z","datePublished":"2026-02-06T06:02:08.671Z","dateUpdated":"2026-02-23T09:22:01.000Z"},"containers":{"cna":{"providerMetadata":{"orgId":"1af790b2-7ee1-4545-860a-a788eba489b5","shortName":"VulDB","dateUpdated":"2026-02-23T09:22:01.000Z"},"title":"micropython runtime.c mp_import_all memory corruption","problemTypes":[{"descriptions":[{"type":"CWE","cweId":"CWE-119","lang":"en","description":"Memory Corruption"}]}],"affected":[{"vendor":"n/a","product":"micropython","versions":[{"version":"1.0","status":"affected"},{"version":"1.1","status":"affected"},{"version":"1.2","status":"affected"},{"version":"1.3","status":"affected"},{"version":"1.4","status":"affected"},{"version":"1.5","status":"affected"},{"version":"1.6","status":"affected"},{"version":"1.7","status":"affected"},{"version":"1.8","status":"affected"},{"version":"1.9","status":"affected"},{"version":"1.10","status":"affected"},{"version":"1.11","status":"affected"},{"version":"1.12","status":"affected"},{"version":"1.13","status":"affected"},{"version":"1.14","status":"affected"},{"version":"1.15","status":"affected"},{"version":"1.16","status":"affected"},{"version":"1.17","status":"affected"},{"version":"1.18","status":"affected"},{"version":"1.19","status":"affected"},{"version":"1.20","status":"affected"},{"version":"1.21","status":"affected"},{"version":"1.22","status":"affected"},{"version":"1.23","status":"affected"},{"version":"1.24","status":"affected"},{"version":"1.25","status":"affected"},{"version":"1.26","status":"affected"},{"version":"1.27.0","status":"affected"}],"cpes":["cpe:2.3:a:micropython:micropython:*:*:*:*:*:*:*:*"]}],"descriptions":[{"lang":"en","value":"A flaw has been found in micropython up to 1.27.0. This vulnerability affects the function mp_import_all of the file py/runtime.c. This manipulation causes memory corruption. The attack needs to be launched locally. The exploit has been published and may be used. Patch name: 570744d06c5ba9dba59b4c3f432ca4f0abd396b6. It is suggested to install a patch to address this issue."}],"metrics":[{"cvssV4_0":{"version":"4.0","baseScore":4.8,"vectorString":"CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P","baseSeverity":"MEDIUM"}},{"cvssV3_1":{"version":"3.1","baseScore":3.3,"vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C","baseSeverity":"LOW"}},{"cvssV3_0":{"version":"3.0","baseScore":3.3,"vectorString":"CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C","baseSeverity":"LOW"}},{"cvssV2_0":{"version":"2.0","baseScore":1.7,"vectorString":"AV:L/AC:L/Au:S/C:N/I:N/A:P/E:POC/RL:OF/RC:C"}}],"timeline":[{"time":"2026-02-05T00:00:00.000Z","lang":"en","value":"Advisory disclosed"},{"time":"2026-02-05T01:00:00.000Z","lang":"en","value":"VulDB entry created"},{"time":"2026-02-18T01:03:36.000Z","lang":"en","value":"VulDB entry last update"}],"credits":[{"lang":"en","value":"Oneafter (VulDB User)","type":"reporter"}],"references":[{"url":"https://vuldb.com/?id.344546","name":"VDB-344546 | micropython runtime.c mp_import_all memory corruption","tags":["vdb-entry","technical-description"]},{"url":"https://vuldb.com/?ctiid.344546","name":"VDB-344546 | CTI Indicators (IOB, IOC, IOA)","tags":["signature","permissions-required"]},{"url":"https://vuldb.com/?submit.743396","name":"Submit #743396 | micropython 0fd0843 Memory Corruption","tags":["third-party-advisory"]},{"url":"https://github.com/micropython/micropython/issues/18639","tags":["issue-tracking"]},{"url":"https://github.com/micropython/micropython/pull/18671","tags":["issue-tracking"]},{"url":"https://github.com/micropython/micropython/issues/18639#issue-3780651410","tags":["exploit","issue-tracking"]},{"url":"https://github.com/dpgeorge/micropython/commit/570744d06c5ba9dba59b4c3f432ca4f0abd396b6","tags":["patch"]},{"url":"https://github.com/micropython/micropython/","tags":["product"]}],"tags":["x_open-source"]},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-02-12T15:08:52.250028Z","id":"CVE-2026-1998","options":[{"Exploitation":"poc"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-02-12T15:09:10.411Z"}}]}}