Vulnerability-Lookup

OPENSUSE-SU-2026:20199-1

Vulnerability from csaf_opensuse - Published: 2026-02-11 16:38 - Updated: 2026-09-17 17:26

Summary

Security update for micropython

Severity

Low

Notes

Title of the patch: Security update for micropython

Description of the patch: This update for micropython fixes the following issues: Changes in micropython: - CVE-2026-1998: Fixed segmentation fault in `mp_map_lookup` via `mp_import_all` (bsc#1257803). - Version 1.26.1 * esp32: update esp_tinyusb component to v1.7.6 * tools: add an environment variable MICROPY_MAINTAINER_BUILD * esp32: add IDF Component Lockfiles to git repo * shared/tinyusb: fix hang from new tx_overwritabe_if_not_connected flag * shared/tinyusb/mp_usbd_cdc: rewrite USB CDC TX loop * tools/mpremote: don't apply Espressif DTR/RTS quirk to TinyUSB CDC dev - Fix building on single core systems * Skip tests/thread/stress_schedule.py when single core system detected

Patchnames: openSUSE-Leap-16.0-packagehub-122

CVE-2026-1998

5.5 (Medium)


                
                  CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Affected products

Recommended 5 products

Product	Version	Remediation
Unresolved product id: openSUSE Leap 16.0:micropython-0:1.26.1-bp160.1.1.aarch64	—	Vendor Fix
Unresolved product id: openSUSE Leap 16.0:micropython-0:1.26.1-bp160.1.1.x86_64	—	Vendor Fix
Unresolved product id: openSUSE Leap 16.0:mpremote-0:1.26.1-bp160.1.1.noarch	—	Vendor Fix
Unresolved product id: openSUSE Leap 16.0:mpy-tools-0:1.26.1-bp160.1.1.aarch64	—	Vendor Fix
Unresolved product id: openSUSE Leap 16.0:mpy-tools-0:1.26.1-bp160.1.1.x86_64	—	Vendor Fix

Threats

Impact moderate

References

6 references

URL	Category
https://www.suse.com/support/security/rating/	external
https://ftp.suse.com/pub/projects/security/csaf/o…	self
https://bugzilla.suse.com/1257803	self
https://www.suse.com/security/cve/CVE-2026-1998/	self
https://www.suse.com/security/cve/CVE-2026-1998	external
https://bugzilla.suse.com/1257803	external

JSON

To clipboard

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}

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

Vulnerability from cvelistv5 – Published: 2026-02-06 06:02 – Updated: 2026-02-23 09:22 X_Open Source

Title

micropython runtime.c mp_import_all memory corruption

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.

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

SSVC

Exploitation: poc Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-02-12 15:08 UTC

CWE

CWE-119 - Memory Corruption

Assigner

VulDB mitre root

References

8 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

1 product

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

Credits

Oneafter (VulDB User)

Show details on NVD website

JSON

To clipboard

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        },
        {
          "cvssV2_0": {
            "baseScore": 1.7,
            "vectorString": "AV:L/AC:L/Au:S/C:N/I:N/A:P/E:POC/RL:OF/RC:C",
            "version": "2.0"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-119",
              "description": "Memory Corruption",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-02-23T09:22:01.000Z",
        "orgId": "1af790b2-7ee1-4545-860a-a788eba489b5",
        "shortName": "VulDB"
      },
      "references": [
        {
          "name": "VDB-344546 | micropython runtime.c mp_import_all memory corruption",
          "tags": [
            "vdb-entry",
            "technical-description"
          ],
          "url": "https://vuldb.com/?id.344546"
        },
        {
          "name": "VDB-344546 | CTI Indicators (IOB, IOC, IOA)",
          "tags": [
            "signature",
            "permissions-required"
          ],
          "url": "https://vuldb.com/?ctiid.344546"
        },
        {
          "name": "Submit #743396 | micropython 0fd0843 Memory Corruption",
          "tags": [
            "third-party-advisory"
          ],
          "url": "https://vuldb.com/?submit.743396"
        },
        {
          "tags": [
            "issue-tracking"
          ],
          "url": "https://github.com/micropython/micropython/issues/18639"
        },
        {
          "tags": [
            "issue-tracking"
          ],
          "url": "https://github.com/micropython/micropython/pull/18671"
        },
        {
          "tags": [
            "exploit",
            "issue-tracking"
          ],
          "url": "https://github.com/micropython/micropython/issues/18639#issue-3780651410"
        },
        {
          "tags": [
            "patch"
          ],
          "url": "https://github.com/dpgeorge/micropython/commit/570744d06c5ba9dba59b4c3f432ca4f0abd396b6"
        },
        {
          "tags": [
            "product"
          ],
          "url": "https://github.com/micropython/micropython/"
        }
      ],
      "tags": [
        "x_open-source"
      ],
      "timeline": [
        {
          "lang": "en",
          "time": "2026-02-05T00:00:00.000Z",
          "value": "Advisory disclosed"
        },
        {
          "lang": "en",
          "time": "2026-02-05T01:00:00.000Z",
          "value": "VulDB entry created"
        },
        {
          "lang": "en",
          "time": "2026-02-18T01:03:36.000Z",
          "value": "VulDB entry last update"
        }
      ],
      "title": "micropython runtime.c mp_import_all memory corruption"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "1af790b2-7ee1-4545-860a-a788eba489b5",
    "assignerShortName": "VulDB",
    "cveId": "CVE-2026-1998",
    "datePublished": "2026-02-06T06:02:08.671Z",
    "dateReserved": "2026-02-05T17:09:46.272Z",
    "dateUpdated": "2026-02-23T09:22:01.000Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

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.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

Action not permitted

OPENSUSE-SU-2026:20199-1

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

Tags

Sightings

Nomenclature

Related by attack behaviour