CVE-2025-70998

Name: CVE-2025-70998
Creator: NVD / NIST
Published: 2026-02-18T16:22:29.453+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 0.42%

Last modified Jun 17, 2026

CVE-2025-70998 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. 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.. EPSS estimates a 0.42% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

9.8/10

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

EPSS Probability

0.42%

34.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-1188

Affected Software

Vendor	Product	Versions
Utt	810 Firmware	1.5.0-140603

References

https://github.com/cha0yang1/UTT-nv810v4-telnet-backdoorExploit, Third Party Advisory

Timeline

Published: Feb 18, 2026
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2025-70998?

How severe is CVE-2025-70998?

CVE-2025-70998 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 0.42% probability of exploitation in the next 30 days.

How do I fix CVE-2025-70998?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2025-70998?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST