---
id: CVE-2026-79405
title: Improper Input Validation in Modem Firmware
summary: >-
  Transient DOS when processing a malformed NR RRC configuration message due to
  improper input validation.
severity: high
cvss: 7.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'
cvssSource: cna
cwe:
  - CWE-20
vendor: 'Unisoc (Shanghai) Technologies Co., Ltd.'
product: Modem
affected:
  - Modem UDX710
ssvc:
  exploitation: none
  automatable: 'yes'
  technicalImpact: partial
  timestamp: '2026-11-04T14:53:50.627398Z'
published: '2026-11-04'
updated: '2026-11-05'
sourceUpdated: '2026-11-05T06:37:02.058Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-79405'
references:
  - url: >-
      https://www.unisoc.com/en/support/product-security-bulletin/2117823464494759937
tags:
  - cve.org
epss: 0.00706
epssPercentile: 0.5351
ingestedAt: '2026-11-05T21:36:00.790Z'
---

## Overview

Transient DOS when processing a malformed NR RRC configuration message due to improper input validation.

## Affected

- `Modem UDX710`

## Remediation

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