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Linux Distros Unpatched Vulnerability : CVE-2026-1998

critical Nessus Plugin ID 298197

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Synopsis

The Linux/Unix host has one or more packages installed with a vulnerability that the vendor indicates will not be patched.

Description

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

 - 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.
 (CVE-2026-1998)

Note that Nessus relies on the presence of the package as reported by the vendor.

Solution

There is no known solution at this time.

See Also

https://security-tracker.debian.org/tracker/CVE-2026-1998

Plugin Details

Severity: Critical

ID: 298197

File Name: unpatched_CVE_2026_1998.nasl

Version: 1.1

Type: local

Agent: unix

Family: Misc.

Published: 2/6/2026

Updated: 2/6/2026

Supported Sensors: Agentless Assessment, Frictionless Assessment Agent, Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.4

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P

CVSS Score Source: CVE-2026-1998

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 9

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:U/RL:U/RC:C

Vulnerability Information

CPE: p-cpe:/a:debian:debian_linux:micropython, cpe:/o:debian:debian_linux:14.0, cpe:/o:debian:debian_linux:13.0

Required KB Items: Host/local_checks_enabled, global_settings/vendor_unpatched, Host/OS/identifier, Host/cpu

Exploit Ease: No known exploits are available

Vulnerability Publication Date: 2/6/2026

Reference Information

CVE: CVE-2026-1998