Is CVE-2018-5455 in the CISA KEV catalog?

No. CVE-2018-5455 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2018-5455?

CVE-2018-5455 has a CVSS v3 base score of 9.8 (CRITICAL).

What is the EPSS score for CVE-2018-5455?

CVE-2018-5455 has an EPSS score of 1.59% (73th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix or mitigate CVE-2018-5455?

No published fix for CVE-2018-5455 has been found yet. Check the linked vendor advisories for guidance as it becomes available.

CVE & CISA-KEV Catalog

CVE-2018-5455

CRITICALEPSS 73th pctl

9.8

CVSS v3

NVD

Description

A Reliance on Cookies without Validation and Integrity Checking issue was discovered in Moxa OnCell G3100-HSPA Series version 1.4 Build 16062919 and prior. The application allows a cookie parameter to consist of only digits, allowing an attacker to perform a brute force attack bypassing authentication and gaining access to device functions.

CWE-565 CWE-287Improper Authentication

How to fix

No published remediation has been found for this vulnerability's affected products yet.

Mitigation guidance may be in the linked vendor advisories in the References section below.

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CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Exploit Intelligence

1.59%probability of exploitation in 30 days

73rdpercentile

Elevated risk: more likely to be exploited than 73% of all known CVEs.

References

Patch1

ics-cert.us-cert.gov

Related Vulnerabilities

Other CWE-565 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2026-0257	Critical	9.1	87%	KEV + Ransom	Fix
CVE-2023-35885	Critical	9.8	75%	-	Fix
CVE-2025-64447	High	8.1	7.5%	-	-
CVE-2008-5784	Critical	9.8	7.1%	-	-
CVE-2020-7070	Medium	4.3	5.0%	-	Fix
CVE-2019-7266	Critical	9.8	4.6%	-	-

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.