Vulnerability-Lookup

FKIE_CVE-2026-1998

Vulnerability from fkie_nvd - Published: 2026-02-06 07:16 - Updated: 2026-02-17 19:15

Severity ?

3.3 (Low) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Summary

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

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

Impacted products

	Vendor	Product	Version
	micropython	micropython	*

JSON

To clipboard

{
  "configurations": [
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      "nodes": [
        {
          "cpeMatch": [
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              "criteria": "cpe:2.3:a:micropython:micropython:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "BAE0EFBB-AF36-42CE-A7ED-0FE76B15691A",
              "versionEndIncluding": "1.27.0",
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  ],
  "cveTags": [],
  "descriptions": [
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      "lang": "en",
      "value": "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."
    },
    {
      "lang": "es",
      "value": "Se ha encontrado una falla en micropython hasta la versi\u00f3n 1.27.0. Esta vulnerabilidad afecta a la funci\u00f3n mp_import_all del archivo py/runtime.c. Esta manipulaci\u00f3n causa corrupci\u00f3n 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."
    }
  ],
  "id": "CVE-2026-1998",
  "lastModified": "2026-02-17T19:15:46.333",
  "metrics": {
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        "acInsufInfo": false,
        "baseSeverity": "LOW",
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          "authentication": "SINGLE",
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          "version": "2.0"
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        "impactScore": 2.9,
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        "obtainOtherPrivilege": false,
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          "attackVector": "LOCAL",
          "availabilityImpact": "LOW",
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          "confidentialityImpact": "NONE",
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          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 5.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
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          "scope": "UNCHANGED",
          "userInteraction": "NONE",
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    "cvssMetricV40": [
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          "Automatable": "NOT_DEFINED",
          "Recovery": "NOT_DEFINED",
          "Safety": "NOT_DEFINED",
          "attackComplexity": "LOW",
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          "confidentialityRequirement": "NOT_DEFINED",
          "exploitMaturity": "PROOF_OF_CONCEPT",
          "integrityRequirement": "NOT_DEFINED",
          "modifiedAttackComplexity": "NOT_DEFINED",
          "modifiedAttackRequirements": "NOT_DEFINED",
          "modifiedAttackVector": "NOT_DEFINED",
          "modifiedPrivilegesRequired": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "modifiedSubIntegrityImpact": "NOT_DEFINED",
          "modifiedUserInteraction": "NOT_DEFINED",
          "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
          "modifiedVulnConfidentialityImpact": "NOT_DEFINED",
          "modifiedVulnIntegrityImpact": "NOT_DEFINED",
          "privilegesRequired": "LOW",
          "providerUrgency": "NOT_DEFINED",
          "subAvailabilityImpact": "NONE",
          "subConfidentialityImpact": "NONE",
          "subIntegrityImpact": "NONE",
          "userInteraction": "NONE",
          "valueDensity": "NOT_DEFINED",
          "vectorString": "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",
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          "vulnIntegrityImpact": "NONE",
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  "published": "2026-02-06T07:16:12.553",
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  "sourceIdentifier": "cna@vuldb.com",
  "vulnStatus": "Analyzed",
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          "value": "CWE-119"
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      "type": "Primary"
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      "description": [
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      "type": "Primary"
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}

CVE-2026-1998 (GCVE-0-2026-1998)

Vulnerability from cvelistv5 – Published: 2026-02-06 06:02 – Updated: 2026-02-12 15:09 X_Open Source

Title

micropython runtime.c mp_import_all memory corruption

Summary

Severity ?

4.8 (Medium)


                        
                          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

3.3 (Low)


                        
                          CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C

3.3 (Low)


                        
                          CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C

CWE

CWE-119 - Memory Corruption

Assigner

VulDB

References

URL

Tags

	https://vuldb.com/?id.344546	vdb-entrytechnical-description
	https://vuldb.com/?ctiid.344546	signaturepermissions-required
	https://vuldb.com/?submit.743396	third-party-advisory
	https://github.com/micropython/micropython/issues/18639	issue-tracking
	https://github.com/micropython/micropython/pull/18671	issue-tracking
	https://github.com/micropython/micropython/issues…	exploitissue-tracking
	https://github.com/dpgeorge/micropython/commit/57…	patch
	https://github.com/micropython/micropython/	product

Impacted products

	Vendor	Product	Version
	n/a	micropython	Affected: 1.0 Affected: 1.1 Affected: 1.2 Affected: 1.3 Affected: 1.4 Affected: 1.5 Affected: 1.6 Affected: 1.7 Affected: 1.8 Affected: 1.9 Affected: 1.10 Affected: 1.11 Affected: 1.12 Affected: 1.13 Affected: 1.14 Affected: 1.15 Affected: 1.16 Affected: 1.17 Affected: 1.18 Affected: 1.19 Affected: 1.20 Affected: 1.21 Affected: 1.22 Affected: 1.23 Affected: 1.24 Affected: 1.25 Affected: 1.26 Affected: 1.27.0

Credits

Oneafter (VulDB User)

Show details on NVD website

JSON

To clipboard

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      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-1998",
                "options": [
                  {
                    "Exploitation": "poc"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-02-12T15:08:52.250028Z",
                "version": "2.0.3"
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          "shortName": "CISA-ADP"
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        "title": "CISA ADP Vulnrichment"
      }
    ],
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          "vendor": "n/a",
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    "datePublished": "2026-02-06T06:02:08.671Z",
    "dateReserved": "2026-02-05T17:09:46.272Z",
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    "state": "PUBLISHED"
  },
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}

Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

Action not permitted

FKIE_CVE-2026-1998

CVE-2026-1998 (GCVE-0-2026-1998)

Tags

Sightings

Nomenclature