CVE-2026-1998

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.

Score

CVSS 3.1 5.5 Medium

Status

Analyzed - cna@vuldb.com

Published

2026-02-06

Last modified

2026-02-23

Weaknesses

CWE-119, CWE-787

Affected products

• Micropython (Micropython)

References

• https://github.com/dpgeorge/micropython/commit/570744d06c5ba9dba59b4c3f432ca4f0abd396b6
• https://github.com/micropython/micropython/
• https://github.com/micropython/micropython/issues/18639
• https://github.com/micropython/micropython/issues/18639#issue-3780651410
• https://github.com/micropython/micropython/pull/18671
• https://vuldb.com/?ctiid.344546
• https://vuldb.com/?id.344546
• https://vuldb.com/?submit.743396