No exploitation reportedFix available

CVE-2018-5455

No exploitation reported by the sources we read.

Published2018-03-05
WeaknessCWE-287 · CWE-565

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

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.

Timeline

dates in UTC

2018-03-0517:29CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-10-23 18:48 UTC

Indicators tagged with this CVE, per day0 indicators over 7 days

Block these indicators

Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2018-5455?format=txt
CSV export: https://api.ismalicious.com/edl/cve/CVE-2018-5455?format=csv
TAXII collection of exploited CVEs
The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD

Moxa oncell g3110-hspa firmwareversion to verify

Branch	Affected	Fixed in	Source
1.4	≤ 1.4	no fix published	NVD

Moxa oncell g3110-hspa-t firmwareversion to verify

Branch	Affected	Fixed in	Source
1.4	≤ 1.4	no fix published	NVD

Moxa oncell g3150-hspa firmwareversion to verify

Branch	Affected	Fixed in	Source
1.4	≤ 1.4	no fix published	NVD

1 more product in the sources.

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Vendor advisories

ICSA-18-060-02 CISA1 known affected
Moxa OnCell G3100-HSPA Series
OnCell G3100-HSPA Series: version 1.4 Build 16062919 and prior

Full record on NVD

Fix

Mitigation from the vendor CISA ICSA-18-060-02 · 1 productMoxa has released new firmware for OnCell G3100-HSPA that is available via the following link:

Advisories and patches

ics-cert.us-cert.govPatch

Detection

Nuclei template: none so far
Exploit-DB: no entry
Proof-of-concept repositories: none listed

Sources

NVDCVSS 3.09.8read 2026-10-23
NVDCVSS 2.07.5read 2026-10-23
CNAweakness (CWE)CWE-565read 2026-10-23
NVDweakness (CWE)CWE-287read 2026-10-23
FIRST EPSSEPSS score1.6 %2026-10-22

Technical details

CVSS v3 Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Published: 2018-03-05
Last Modified: 2026-06-17
NVD status: Modified

Frequently asked questions

What is CVE-2018-5455?

Is CVE-2018-5455 actively exploited?

Active exploitation of CVE-2018-5455 has not been confirmed. Its EPSS score was 1.6% on 2026-10-22, the estimated probability of exploitation in the next 30 days.

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

CVE-2018-5455 has a CVSS v3 base score of 9.8 (CRITICAL severity), with vector string CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

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