CVE-2025-70998 | UTT HiPER 810 / nv810v4 router firmware v1.5.0-140603 was di… | CVSS 9.8 CRITICAL

Description

UTT HiPER 810 / nv810v4 router firmware v1.5.0-140603 was discovered to contain insecure default credentials for the telnet service, possibly allowing a remote attacker to gain root access via a crafted script.

Metadata

CVE ID: CVE-2025-70998
State: PUBLISHED
Assigner: mitre
Reserved: 2026-01-09 00:00 UTC
Published: 2026-02-18 00:00 UTC
Last updated: 2026-02-18 15:37 UTC
Primary CWE: CWE-1188
CWE-1188 Initialization of a Resource with an Insecure Defau…
Vendor / Product: n/a / n/a
Sources: cve.org · NVD

Severity & Metrics

9.8 CRITICAL CVSS 3.1

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

SSVC — CISA Coordinator

Exploitation: PoC
Automatable: yes
Tech. Impact: total

Affected products (1)

Vendor	Product	Platform	Versions
n/a	n/a	—	n/a

Weakness (CWE)

CWE	Source	Description
—	cna	n/a
CWE-1188	adp	CWE-1188 Initialization of a Resource with an Insecure Default

CVSS scores (1)

Score	Severity	Version	Source	Vector
9.8	CRITICAL	3.1	adp	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References (1)

https://github.com/cha0yang1/UTT-nv810v4-telnet-backdoor