CVE-2026-76854

MEDIUM 6.5

Netcore NR255-V 1.5.130703 Sensitive Information Disclosure via l7_web_auth_user_show.cgi

CVSS Score

6.5

EPSS Score

0.0%

EPSS Percentile

0th

Netcore NR255-V version 1.5.130703 contains a sensitive information disclosure vulnerability in l7_web_auth_user_show.cgi related to captive-portal credential handling. Attackers can query this component to obtain captive-portal user credentials, compromising confidentiality of authenticated network access.

CWE	CWE-522
Vendor	netcore
Product	nr255-v
Published	Sep 15, 2026

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CVSS v3 Breakdown

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

None

Affected Versions

Netcore / NR255-V

1.5.130703

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/draw-ctf/netcore-router-public-refs/blob/main/2026.08.19-netcore-nr255v-captive-portal-cred-disclosure.md vulncheck.com: https://www.vulncheck.com/advisories/netcore-nr255-v-1.5.130703-sensitive-information-disclosure-via-l7-web-auth-user-show-cgi

Credits

Zhou Ao Yin Luxing Jiang Yuxuan Liu Xin @Nebusec