How severe is CVE-2018-6624?

CVE-2018-6624 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2018-6624 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (74th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-6624?

CVE-2018-6624 affects Omron Ns Series Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2018-6624?

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

When was CVE-2018-6624 published?

CVE-2018-6624 was published on 2018-02-05 and last updated on 2026-06-17.

CVE-2018-6624

CVE-2018-6624 is a critical-severity vulnerability in Omron Ns Series Firmware with a CVSS 3.x base score of 9.8. 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-425.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 7.5
EPSS exploit prediction: 2% (74th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-425
Affected product: Omron Ns Series Firmware
Published: 2018-02-05
Last modified: 2026-06-17

Description

OMRON NS devices 1.1 through 1.3 allow remote attackers to bypass authentication via a direct request to the .html file for a specific screen, as demonstrated by monitor.html.

Frequently asked questions

What is CVE-2018-6624?: OMRON NS devices 1.1 through 1.3 allow remote attackers to bypass authentication via a direct request to the .html file for a specific screen, as demonstrated by monitor.html.
How severe is CVE-2018-6624?: CVE-2018-6624 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2018-6624 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (74th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-6624?: CVE-2018-6624 affects Omron Ns Series Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2018-6624?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2018-6624 published?: CVE-2018-6624 was published on 2018-02-05 and last updated on 2026-06-17.

References

http://misteralfa-hack.blogspot.cl/2018/02/otomron-login-bypass.html

Affected products (1)

cpe:2.3:o:omron:ns_series_firmware:*:*:*:*:*:*:*:*

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