In modem, there is a possible improper input validation. This could lead to remote denial of service with no additional execution privileges needed

Metrics

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploitation none

Automatable yes

Technical Impact partial

Affected Vendors & Products

Vendors Products
Unisoc
  • T8100
  • T8200
  • T8300
  • T9100

No data.

No data.

References
Link Providers
https://www.unisoc.com/en/support/product-security-bulletin/2084109408382668801 cve-icon cve-icon
History

Wed, 05 Aug 2026 12:45:00 +0000

Type Values Removed Values Added
First Time appeared Unisoc
Unisoc t8100
Unisoc t8200
Unisoc t8300
Unisoc t9100
Vendors & Products Unisoc
Unisoc t8100
Unisoc t8200
Unisoc t8300
Unisoc t9100

Tue, 04 Aug 2026 22:00:00 +0000

Type Values Removed Values Added
Title Improper Input Validation in Unisoc Modem Leading to Remote Denial of Service

Mon, 03 Aug 2026 15:30:00 +0000

Type Values Removed Values Added
Weaknesses CWE-20
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Mon, 03 Aug 2026 08:00:00 +0000

Type Values Removed Values Added
Description In modem, there is a possible improper input validation. This could lead to remote denial of service with no additional execution privileges needed
References
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'}
cve-icon MITRE

Status: PUBLISHED

Assigner: Unisoc

Published: 2026-08-03T07:18:27.492Z

Updated: 2026-08-03T14:19:08.357Z

Reserved: 2025-12-31T07:33:23.121Z

Link: CVE-2026-21553

cve-icon Vulnrichment

Updated: 2026-08-03T14:19:02.738Z

cve-icon NVD

Status : Received

Published: 2026-08-03T08:17:20.020

Modified: 2026-08-03T15:16:19.417

Link: CVE-2026-21553

cve-icon Redhat

No data.