How severe is CVE-2018-5453?

CVE-2018-5453 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2018-5453 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (65th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-5453?

CVE-2018-5453 primarily affects Moxa Oncell G3110-hspa Firmware. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2018-5453?

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-2018-5453 published?

CVE-2018-5453 was published on 2018-03-05 and last updated on 2026-06-17.

CVE-2018-5453

CVE-2018-5453 is a high-severity vulnerability in Moxa Oncell G3110-hspa Firmware with a CVSS 3.x base score of 7.5. 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-119.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 7.8
EPSS exploit prediction: 1% (65th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-119
Affected product: Moxa Oncell G3110-hspa Firmware
Published: 2018-03-05
Last modified: 2026-06-17

Description

An Improper Handling of Length Parameter Inconsistency issue was discovered in Moxa OnCell G3100-HSPA Series version 1.4 Build 16062919 and prior. An attacker may be able to edit the element of an HTTP request, causing the device to become unavailable.

Frequently asked questions

What is CVE-2018-5453?: An Improper Handling of Length Parameter Inconsistency issue was discovered in Moxa OnCell G3100-HSPA Series version 1.4 Build 16062919 and prior. An attacker may be able to edit the element of an HTTP request, causing the device to become unavailable.
How severe is CVE-2018-5453?: CVE-2018-5453 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2018-5453 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (65th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-5453?: CVE-2018-5453 primarily affects Moxa Oncell G3110-hspa Firmware. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2018-5453?: 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-2018-5453 published?: CVE-2018-5453 was published on 2018-03-05 and last updated on 2026-06-17.

References

https://ics-cert.us-cert.gov/advisories/ICSA-18-060-02

Affected products (4)

cpe:2.3:o:moxa:oncell_g3110-hspa_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:moxa:oncell_g3110-hspa-t_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:moxa:oncell_g3150-hspa_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:moxa:oncell_g3150-hspa-t_firmware:*:*:*:*:*:*:*:*

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