CVE-2026-76864

What it is

NR255-V version 1.5.130703 fails to sanitize QoS rule names before they are parsed via eval() in qos_xianz_add_cgi, qos_xianz_show_cgi, qos_filter_add_cgi, and qos_filter_show_cgi handlers. An attacker can inject persistent script code through crafted QoS rule name input that executes when the stored data is later processed by the affected handlers.'

At a glance

Exploitability

Can be exploited over the network with an admin-level account, but needs a user to act. Limited direct impact.

Exploit odds

0.3% chance of exploitation in the next 30 days (EPSS).

Fix

No patch or advisory is linked yet. Look at mitigations or restrict exposure.

Timeline

1. 2026-09-15 22:17 UTC PublishedDisclosed publicly on CVE.org and NVD
2. 2026-09-17 20:18 UTC Last updatedMost recent change to the record

Details

Published

2026-09-15 22:17 UTC

Last modified

2026-09-17 20:18 UTC

Exploit probability

0.3% · EPSS, next 30 days

Weakness

CWE-79 · Cross-site scripting

Record status

Deferred

Attack profile CVSS 4.0 · 4.8

Attack vector

Network

Complexity

Low

Attack requirements

None

Privileges needed

High

User interaction

Passive

Confidentiality

Low

Integrity

Low

Availability

None