CRITICAL

CVE-2018-12666

CVSS v3

9.8

CRITICAL

EPSS Score

1.8 %

exploit probability, as of 2026-10-19

CISA KEV

known exploited

Exploitation

—

SSVC status

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Affected and fixed versions

Neither OSV.dev nor the vendor advisories we read list affected versions for CVE-2018-12666 yet.

Full record on NVD

Description

SV3C L-SERIES HD CAMERA V2.3.4.2103-S50-NTD-B20170508B devices improperly identifies users only by the authentication level sent in the cookies, which allow remote attackers to bypass authentication and gain administrator access by setting the authLevel cookie to 255.

Technical details

Published: 2018-10-19

Frequently asked questions

What is CVE-2018-12666?

Is CVE-2018-12666 actively exploited?

Active exploitation of CVE-2018-12666 has not been confirmed. Its EPSS score was 1.8% on 2026-10-19, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2018-12666?

CVE-2018-12666 has a CVSS v3 base score of 9.8 (CRITICAL severity).

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