CVE-2026-1998

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. 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.

3.3 /10

CVSS v3 : LOW

V3 Legend

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

V2 Legend

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

17 Feb 2026, 19:15

Type Values Removed Values Added
Summary
  • (es) Se ha encontrado una falla en micropython hasta la versión 1.27.0. Esta vulnerabilidad afecta a la función mp_import_all del archivo py/runtime.c. Esta manipulación causa corrupción de memoria. El ataque necesita ser lanzado localmente. El exploit ha sido publicado y puede ser usado. Nombre del parche: 570744d06c5ba9dba59b4c3f432ca4f0abd396b6. Se sugiere instalar un parche para abordar este problema.
First Time Micropython micropython
Micropython
CWE CWE-787
CPE cpe:2.3:a:micropython:micropython:*:*:*:*:*:*:*:*
References () https://github.com/dpgeorge/micropython/commit/570744d06c5ba9dba59b4c3f432ca4f0abd396b6 - () https://github.com/dpgeorge/micropython/commit/570744d06c5ba9dba59b4c3f432ca4f0abd396b6 - Patch
References () https://github.com/micropython/micropython/ - () https://github.com/micropython/micropython/ - Product
References () https://github.com/micropython/micropython/issues/18639 - () https://github.com/micropython/micropython/issues/18639 - Exploit, Issue Tracking
References () https://github.com/micropython/micropython/issues/18639#issue-3780651410 - () https://github.com/micropython/micropython/issues/18639#issue-3780651410 - Exploit, Issue Tracking
References () https://github.com/micropython/micropython/pull/18671 - () https://github.com/micropython/micropython/pull/18671 - Exploit, Issue Tracking
References () https://vuldb.com/?ctiid.344546 - () https://vuldb.com/?ctiid.344546 - Permissions Required, VDB Entry
References () https://vuldb.com/?id.344546 - () https://vuldb.com/?id.344546 - Third Party Advisory, VDB Entry
References () https://vuldb.com/?submit.743396 - () https://vuldb.com/?submit.743396 - Exploit, Third Party Advisory, VDB Entry

06 Feb 2026, 07:16

Type Values Removed Values Added
New CVE
Information

Published : 2026-02-06 07:16

Updated : 2026-02-17 19:15

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