Description
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.
References (8)
Core 8
Core References
Third Party Advisory, VDB Entry vdb-entry
technical-description
https://vuldb.com/?id.344546
Permissions Required, VDB Entry signature
permissions-required
https://vuldb.com/?ctiid.344546
Exploit, Third Party Advisory, VDB Entry third-party-advisory
https://vuldb.com/?submit.743396
Exploit, Issue Tracking issue-tracking
https://github.com/micropython/micropython/issues/18639
Exploit, Issue Tracking issue-tracking
https://github.com/micropython/micropython/pull/18671
Exploit, Issue Tracking exploit
issue-tracking
https://github.com/micropython/micropython/issues/18639#issue-3780651410
Product product
https://github.com/micropython/micropython/
Scores
CVSS v3
3.3
EPSS
0.0020
EPSS Percentile
10.2%
Attack Vector
LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
CISA SSVC
Vulnrichment
Exploitation
poc
Automatable
no
Technical Impact
partial
Details
CWE
CWE-119
CWE-787
Status
published
Products (1)
micropython/micropython
< 1.27.0
Published
Feb 06, 2026
Tracked Since
Feb 18, 2026