CVE-2026-76871: Credential Exposure (CVSS 6.5)

Description

Netcore NR255-V version 1.5.130703 contains a sensitive information disclosure vulnerability in mod_vpn_remote/plan.json, pptpd_user_show.cgi, pptp_client_config_show.cgi, and l2tpd_user_show.cgi. Attackers can leverage these components to obtain PPTP and L2TP VPN credentials.

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CVSS v3.1 Score

6.5

MEDIUM

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

EPSS — Exploit Prediction

0.0028

Probability of exploitation

0.20%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-522 CWE-522

References

Other References

https://github.com/draw-ctf/netcore-router-public-refs/blob/main/2026.08.19-netcore-nr255v-pptp-l2tp-cred-disclosure.md https://www.vulncheck.com/advisories/netcore-nr255-v-1.5.130703-sensitive-information-disclosure-via-vpn-read-handlers

Frequently Asked Questions

What is CVE-2026-76871? +

Netcore NR255-V version 1.5.130703 contains a sensitive information disclosure vulnerability in mod_vpn_remote/plan.json, pptpd_user_show.cgi, pptp_client_config_show.cgi, and l2tpd_user_show.cgi. Attackers can leverage these components to obtain PPTP and L2TP VPN credentials. It has a CVSS v3.1 base score of 6.5 (MEDIUM).

How severe is CVE-2026-76871? +

CVE-2026-76871 has a CVSS v3.1 score of 6.5 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance. The EPSS score is 0.0028, placing it in the 0th percentile for exploitation probability.

How do I check if I'm vulnerable to CVE-2026-76871? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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CVE-2026-76871