CVE-2026-1998

LOW EPSS 10.3%
Published Feb 6, 20264mo ago · Modified Jun 17, 20262w ago
1.9 CVSS 4.0
Low
Find Similar
Published Feb 6, 2026 4mo ago
Last Modified Jun 17, 2026 2w ago

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.

CVSS Details

Base Score
1.9
Exploitability
—
Impact
—
Vector string
CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope X

Threat Intelligence

EPSS Exploit Probability
10.3% percentile
Exploit & Patch Status
Public Exploit Known
Patch Available

Weaknesses 2

CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer Memory Safety
CWE-787 Out-of-bounds Write Memory Safety

Affected Products 1

VendorProductVersionRange
micropythonmicropython* ≤1.27.0

References 8

  • github.com https://github.com/dpgeorge/micropython/commit/570744d06c5ba9dba59b4c3f432ca4f0abd396b6
    Patch
  • github.com https://github.com/micropython/micropython/
    Product
  • github.com https://github.com/micropython/micropython/issues/18639
    ExploitIssue Tracking
  • github.com https://github.com/micropython/micropython/issues/18639#issue-3780651410
    ExploitIssue Tracking
  • github.com https://github.com/micropython/micropython/pull/18671
    ExploitIssue Tracking
  • vuldb.com https://vuldb.com/?ctiid.344546
    Permissions RequiredVDB Entry
  • vuldb.com https://vuldb.com/?id.344546
    Third Party AdvisoryVDB Entry
  • vuldb.com https://vuldb.com/?submit.743396
    ExploitThird Party AdvisoryVDB Entry

Remediation

  • github.com https://github.com/dpgeorge/micropython/commit/570744d06c5ba9dba59b4c3f432ca4f0abd396b6
    Patch