---
id: CVE-2026-101035
title: A flaw has been found in aligungr UERANSIM up to 3.3.0
summary: >-
  A flaw has been found in aligungr UERANSIM up to 3.3.0. This affects the
  function DecodePlainMmMessage in the library src/lib/nas/encode.cpp of the
  component nr-gnb. Executing a manipulation can lead to uncaught exception. The
  attack can…
severity: medium
cvss: 5.3
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L'
cwe:
  - CWE-248
vendor: aligungr
product: UERANSIM
affected:
  - UERANSIM 3.0
  - UERANSIM 3.1
  - UERANSIM 3.2
  - UERANSIM 3.3.0
published: '2026-09-28'
updated: '2026-09-28'
sourceUpdated: '2026-09-28T10:16:42.453'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-101035'
references:
  - url: 'https://gist.github.com/centauruszzz/f729edf89aa32ae3cfe4865c71ad1102'
    label: cna@vuldb.com
  - url: 'https://github.com/aligungr/UERANSIM/'
    label: cna@vuldb.com
  - url: >-
      https://github.com/aligungr/UERANSIM/commit/1ae9bf2062b57595dbcbc4bc1d0a0ccf06815bac
    label: cna@vuldb.com
  - url: 'https://vuldb.com/cve/CVE-2026-101035'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/submit/926089'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/vuln/410903'
    label: cna@vuldb.com
  - url: 'https://vuldb.com/vuln/410903/cti'
    label: cna@vuldb.com
tags:
  - nvd
  - cve.org
  - exploit-available
exploitAvailable: true
ssvc:
  exploitation: poc
  automatable: 'yes'
  technicalImpact: partial
  timestamp: '2026-09-28T10:54:13.618358Z'
ingestedAt: '2026-09-28T10:07:17.788Z'
---

## Overview

A flaw has been found in aligungr UERANSIM up to 3.3.0. This affects the function DecodePlainMmMessage in the library src/lib/nas/encode.cpp of the component nr-gnb. Executing a manipulation can lead to uncaught exception. The attack can be launched remotely. The exploit has been published and may be used. This patch is called 1ae9bf2062b57595dbcbc4bc1d0a0ccf06815bac. It is best practice to apply a patch to resolve this issue.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.