UBUNTU-CVE-2026-1998

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Source
https://ubuntu.com/security/CVE-2026-1998
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-1998.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-1998
Upstream
Published
2026-02-06T07:16:00Z
Modified
2026-02-19T20:16:01.821522Z
Severity
  • 3.3 (Low) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L CVSS Calculator
  • 5.5 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
  • 1.9 (Low) CVSS_V4 - 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 CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

A flaw has been found in micropython up to 1.27.0. This vulnerability affects the function mpimportall 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

Affected packages

Ubuntu:Pro:20.04:LTS / micropython

Package

Name
micropython
Purl
pkg:deb/ubuntu/micropython@1.12-1ubuntu0.1~esm1?arch=source&distro=esm-apps/focal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

1.*
1.12-1
1.12-1ubuntu0.1~esm1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "micropython",
            "binary_version": "1.12-1ubuntu0.1~esm1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-1998.json"

Ubuntu:Pro:22.04:LTS / micropython

Package

Name
micropython
Purl
pkg:deb/ubuntu/micropython@1.17+ds-1.1ubuntu2+esm1?arch=source&distro=esm-apps/jammy

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

1.*
1.17+ds-1ubuntu1
1.17+ds-1.1
1.17+ds-1.1ubuntu2
1.17+ds-1.1ubuntu2+esm1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "micropython",
            "binary_version": "1.17+ds-1.1ubuntu2+esm1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-1998.json"

Ubuntu:Pro:24.04:LTS / micropython

Package

Name
micropython
Purl
pkg:deb/ubuntu/micropython@1.22.1+ds-1ubuntu0.24.04.1~esm1?arch=source&distro=esm-apps/noble

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

1.*
1.19.1+ds-1
1.22.1+ds-1
1.22.1+ds-1build1
1.22.1+ds-1build2
1.22.1+ds-1ubuntu0.24.04.1~esm1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "micropython",
            "binary_version": "1.22.1+ds-1ubuntu0.24.04.1~esm1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-1998.json"

Ubuntu:25.10 / micropython

Package

Name
micropython
Purl
pkg:deb/ubuntu/micropython@1.25.0+ds-1?arch=source&distro=questing

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

1.*
1.24.1+ds-1
1.25.0+ds-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "micropython",
            "binary_version": "1.25.0+ds-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-1998.json"