How severe is CVE-2018-12455?

CVE-2018-12455 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2018-12455 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 6% (93rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-12455?

CVE-2018-12455 affects Intelbras Nplug Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2018-12455?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2018-12455 published?

CVE-2018-12455 was published on 2018-10-10 and last updated on 2026-06-17.

CVE-2018-12455

CVE-2018-12455 is a high-severity vulnerability in Intelbras Nplug Firmware with a CVSS 3.x base score of 8.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-287.

Key facts

Severity: High (CVSS 3.x base score 8.1)
CVSS v2: 9.3
EPSS exploit prediction: 6% (93rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-287
Affected product: Intelbras Nplug Firmware
Published: 2018-10-10
Last modified: 2026-06-17

Description

Intelbras NPLUG 1.0.0.14 wireless repeater devices have a critical vulnerability that allows an attacker to authenticate in the web interface just by using "admin:" as the name of a cookie.

Frequently asked questions

What is CVE-2018-12455?: Intelbras NPLUG 1.0.0.14 wireless repeater devices have a critical vulnerability that allows an attacker to authenticate in the web interface just by using "admin:" as the name of a cookie.
How severe is CVE-2018-12455?: CVE-2018-12455 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2018-12455 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 6% (93rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-12455?: CVE-2018-12455 affects Intelbras Nplug Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2018-12455?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2018-12455 published?: CVE-2018-12455 was published on 2018-10-10 and last updated on 2026-06-17.

References

http://seclists.org/fulldisclosure/2018/Oct/18

Affected products (1)

cpe:2.3:o:intelbras:nplug_firmware:1.0.0.14:*:*:*:*:*:*:*

More vulnerabilities in Intelbras Nplug Firmware

CVE-2018-12456 — High (CVSS 8.8): Intelbras NPLUG 1.0.0.14 wireless repeater devices have no CSRF token protection in the web interface, allowing…
CVE-2018-17337 — Medium (CVSS 6.1): Intelbras NPLUG 1.0.0.14 devices have XSS via a crafted SSID that is received via a network broadcast.

All CVEs affecting Intelbras Nplug Firmware →

Other CWE-287 (Improper Authentication) vulnerabilities

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CVE-2026-59500 — Critical (CVSS 10.0): CWE-287: Improper Authentication
CVE-2024-27253 — Critical (CVSS 10.0): IBM DOORS Next 7.0.3 through 7.0.3 Interim Fix 018 could allow an authenticated user to bypass security logic to…
CVE-2026-56162 — Critical (CVSS 10.0): Improper authentication in Azure SQL Database allows an unauthorized attacker to elevate privileges over a network.
CVE-2026-62825 — Critical (CVSS 10.0): Improper authentication in Azure Key Vault allows an unauthorized attacker to elevate privileges over a network.

Browse all CWE-287 (Improper Authentication) vulnerabilities →