PT-2026-20437 · Utt · Nv810V4+1

Published 2026-02-18 · Updated 2026-02-19 · CVE-2025-70998

Positive Technologies (AI Summary)

CVSS v3.1

9.8

Critical

Base vector

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

Name of the Vulnerable Software and Affected Versions UTT HiPER 810 / nv810v4 router firmware version 1.5.0-140603

Description The UTT HiPER 810 / nv810v4 router firmware contains insecure default credentials for the telnet service. This could allow a remote attacker to gain root access using a crafted script.

Recommendations Change the default credentials for the telnet service.

Exploit

Fix

Weakness Enumeration

CWE-1188

Related Identifiers

CVE-2025-70998

Affected Products

Utt Hiper 810

Nv810V4

References · 7

• 🔥 https://github.com/cha0yang1/UTT-nv810v4-telnet-backdoor · Exploit
• https://osv.dev/vulnerability/CVE-2025-70998 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2025-70998 · Security Note
• https://twitter.com/CVEnew/status/2024154274461032582 · Twitter Post
• https://t.me/cveNotify/152494 · Telegram Post
• https://twitter.com/VulmonFeeds/status/2024215366952534519 · Twitter Post
• https://twitter.com/TheHackerWire/status/2024158644288593992 · Twitter Post