CVE-2026-25715
CWE-521Published: February 20, 2026· Updated: Jun 17, 2026
Official Description
The web management interface of the device allows the administrator
username and password to be set to blank values. Once applied, the
device permits authentication with empty credentials over the web
management interface and Telnet service. This effectively disables
authentication across all critical management channels, allowing any
network-adjacent attacker to gain full administrative control without
credentials.
Risk Analysis
This critical vulnerability allows unauthenticated network-adjacent attackers to gain full administrative control over a device. The web management interface and Telnet service permit blank usernames and passwords, effectively disabling authentication across critical management channels. With a CVSS score of 9.8, this flaw is extremely severe, though its EPSS score of 0.00069 suggests a low current exploitation likelihood.
No public exploit is currently known for this vulnerability. Since it is remotely exploitable with low complexity and requires no authentication, it presents a significant risk if an exploit becomes available.
Ensure that administrator usernames and passwords cannot be set to blank values. Implement and enforce strong password policies for all management interfaces, including web and Telnet. Restrict network access to management interfaces to trusted internal networks only.
Technical Analysis
CVE-2026-25715 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.
The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.
A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.
CVSS v3.1 Vector Breakdown
Exploit & PoC Resources
News & Research Mentioning CVE-2026-25715
View CSAF Summary Successful exploitation of these vulnerabilities could result in authentication being disabled, a denial-of-service condition, or an attacker stealing valid user credentials, including administrator credentials. The following versions of Jinan USR IOT Technology Limited (PUSR) USR-W610 are affected: USR-W610 <=3.1.1.0 (CVE-2026-25715, CVE-2026-24455, CVE-2026-26049, CVE-2026-26048) CVSS Vendor Equipment Vulnerabilities v3 9.8 Jinan USR IOT Technology Limited (PUSR) Jinan USR IOT Technology Limited (PUSR) USR-W610 Weak Password Requirements, Cleartext Transmission of Sensitive Information, Insufficiently Protected Credentials, Missing Authentication for Critical Function Background Critical Infrastructure Sectors: Critical Manufactur [xlite_meta score:73 src:CISA Alerts xlite_fp:8491874e48185311f9bbfa42b476a6554960dc0aa0006292b37523eb314023bc]
All References (2)
Quick Facts
Known Threat Actors
Related CVEs (CWE-521)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2026-25715 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts