CVE-2018-5455

highpriority · track · 40EPSS 0.016 · 75 %ileEUUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

1.56% (75th) EPSS

CVSS 7.5 · high

Is it mine?

7 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · cisa_csaf_ot · nvd

EPSS · scored 2026-10-27

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.

remediations

Vendor fix, mitigation, or workaround guidance, as published by each source.

No vendor fix yet; a mitigation is available.

MitigationOnCell G3100-HSPA Seriescisa_csaf_ot
Moxa has released new firmware for OnCell G3100-HSPA that is available via the following link:
https://www.moxa.com/support/download.aspx?type=support&id=13668

cvss

Technical severity, 0–10. One row per scoring source.

9.8

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · high–critical · 7.5–9.8

v2.07.5highAV:N/AC:L/Au:N/C:P/I:P/A:Pprimary · NVD / NIST USexploitability 10 · impact 6.4

v3.09.8criticalCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hprimary · NVD / NIST USexploitability 3.9 · impact 5.9

v3.09.8criticalCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hsecondary · CISA US

v3.09criticalCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:Usecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-287USprimaryCWE-565USCWE-565US

affected products (7)

Products and version ranges known to be affected.

OnCell G3100-HSPA Series: version 1.4 Build 16062919 and priorall versionscisa_csaf_otUS
Moxa OnCell G3100-HSPA Series≤ 1.4 Build 160062919cisa_csaf_otUS
n/a Moxa OnCell G3100-HSPA Series≤ Moxa OnCell G3100-HSPA Seriesenisa_euvdEU
moxa oncell g3110-hspa firmware≤ 1.4nvdUScpe:2.3:o:moxa:oncell_g3110-hspa_firmware:*:*:*:*:*:*:*:*
moxa oncell g3110-hspa-t firmware≤ 1.4nvdUScpe:2.3:o:moxa:oncell_g3110-hspa-t_firmware:*:*:*:*:*:*:*:*
moxa oncell g3150-hspa firmware≤ 1.4nvdUScpe:2.3:o:moxa:oncell_g3150-hspa_firmware:*:*:*:*:*:*:*:*
moxa oncell g3150-hspa-t firmware≤ 1.4nvdUScpe:2.3:o:moxa:oncell_g3150-hspa-t_firmware:*:*:*:*:*:*:*:*

advisories (1)

Vendor and ecosystem advisories describing this.

ICSA-18-060-02Moxa OnCell G3100-HSPA Series2018-03-01icsa · cisa_csaf_otUS
ATTENTION: Remotely exploitable/low skill level to exploit.

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd cisa_csaf_ot nvd NVD CVE.org MITRE

published 2018-03-05modified 2026-06-17

related (7,710)

Related entries.

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+7705 more

references (4)

External citations — patches, advisories, analysis.

https://ics-cert.us-cert.gov/advisories/ICSA-18-060-02 cnnvd
https://www.moxa.com/support/download.aspx?type=support&id=13668Patchcnnvd
https://ics-cert.us-cert.gov/advisories/ICSA-18-060-02 enisa_euvd
https://ics-cert.us-cert.gov/advisories/ICSA-18-060-02PatchThird Party AdvisoryUS Government Resourcenvd

scry

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