CVE-2026-76863Network attack vector

Telemetry disclosure via overbroad QoS read routes

Published Sep 15, 2026 · Updated Sep 15, 2026

Information disclosure in Netcore NR255-V 1.5.130703 allows remote authenticated users to read live network telemetry through QoS routes. The mod_qos_bandwidth plan.json handling in filter_conns_dump_cgi.c and IGD_CgiCall.c exposes read endpoints to overly broad authenticated roles without enforcing intended privileges. Valid management credentials with one of those roles are required; exposure is limited to live telemetry, with no supported ability to alter configuration.

CVSS severityUnavailable
Unscored
EPSS probability0.22%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Information disclosure in Netcore NR255-V 1.5.130703 allows remote authenticated users to read live network telemetry through QoS routes. The mod_qos_bandwidth plan.json handling in filter_conns_dump_cgi.c and IGD_CgiCall.c exposes read endpoints to overly broad authenticated roles without enforcing intended privileges. Valid management credentials with one of those roles are required; exposure is limited to live telemetry, with no supported ability to alter configuration.

The record

CVE
CVE-2026-76863
Published
Sep 15, 2026
Updated
Sep 15, 2026
Vendor
Netcore
Product
NR255-V
Classifications
Unavailable
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 15, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 15, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

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  1. Affected versionversion=1.5.130703

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Netcore · NR255-Vversion=1.5.130703

Published CVSS scores

No CVSS assessment is available in this record.

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

No sourced classifications are available.

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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