CVE-2026-1998

low-risk
Published 2026-02-06

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.

Do I need to act?

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0.01% chance of exploitation
EPSS score — low exploit probability
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
3
CVSS 3.3/10 Low
LOCAL / LOW complexity

Affected Products (1)

Micropython

Affected Vendors

Micropython

References (8)

Patch https://github.com/dpgeorge/micropython/commit/570744d06c5ba9dba59b4c3f432ca4f0a...
Product https://github.com/micropython/micropython/
Exploit https://github.com/micropython/micropython/issues/18639
Exploit https://github.com/micropython/micropython/issues/18639#issue-3780651410
Exploit https://github.com/micropython/micropython/pull/18671
Permissions Required https://vuldb.com/?ctiid.344546
Third Party Advisory https://vuldb.com/?id.344546
Exploit https://vuldb.com/?submit.743396
18
/ 100
low-risk
Severity 13/34 · Low
Exploitability 0/34 · Minimal
Exposure 5/34 · Minimal