CVE-2025-70998

CRITICAL EPSS 34.0%

Published Feb 18, 20264mo ago · Modified Jun 17, 20262w ago

9.8 CVSS 3.1

Critical

Published Feb 18, 2026 4mo ago

Last Modified Jun 17, 2026 2w ago

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.

CVSS Details

Base Score

9.8

Exploitability

3.9

Impact

5.9

Vector string

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

Attack Vector Network

Attack Complexity Low

Privileges Required None

User Interaction None

Scope Unchanged

Confidentiality High

Integrity High

Availability High

Threat Intelligence

EPSS Exploit Probability

34.0% percentile

Exploit & Patch Status

Public Exploit Known

No Patch Available

Weaknesses 1

CWE-1188

Affected Products 2

Vendor	Product	Version	Range
utt	810_firmware	1.5.0-140603	any
utt	810	4.0	any

References 1

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

ExploitThird Party Advisory

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.