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.

CVSS v3 3.3 LOW
CVSS v2.0 1.7 LOW

3.3^/10

CVSS v3 : LOW

Vector :

Exploitability : 1.8 / Impact : 1.4

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact LOW

Scope UNCHANGED

1.7^/10

CVSS v2.0 : LOW

Vector : AV:L/AC:L/Au:S/C:N/I:N/A:P

Exploitability : 3.1 / Impact : 2.9

Access Vector LOCAL

Access Complexity LOW

Authentication SINGLE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact PARTIAL

References

Link	Resource
https://github.com/dpgeorge/micropython/commit/570744d06c5ba9dba59b4c3f432ca4f0abd396b6	Patch
https://github.com/micropython/micropython/	Product
https://github.com/micropython/micropython/issues/18639	Exploit Issue Tracking
https://github.com/micropython/micropython/issues/18639#issue-3780651410	Exploit Issue Tracking
https://github.com/micropython/micropython/pull/18671	Exploit Issue Tracking
https://vuldb.com/?ctiid.344546	Permissions Required VDB Entry
https://vuldb.com/?id.344546	Third Party Advisory VDB Entry
https://vuldb.com/?submit.743396	Exploit Third Party Advisory VDB Entry

Configurations

Configuration 1 (hide)

cpe:2.3:a:micropython:micropython:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2026-02-06 07:16

Updated : 2026-06-17 10:16

NVD link : CVE-2026-1998

Mitre link : CVE-2026-1998

CVE.ORG link : CVE-2026-1998

JSON object : View

Products Affected

micropython

micropython

CWE

CWE-119

Improper Restriction of Operations within the Bounds of a Memory Buffer

CWE-787

Out-of-bounds Write

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