How severe is CVE-2018-5449?

CVE-2018-5449 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over an adjacent network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2018-5449 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (39th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-5449?

CVE-2018-5449 primarily affects Moxa Oncell G3150-hspa-t 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-2018-5449?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2018-5449 published?

CVE-2018-5449 was published on 2018-03-05 and last updated on 2026-06-17.

CVE-2018-5449

CVE-2018-5449 is a medium-severity vulnerability in Moxa Oncell G3150-hspa-t Firmware with a CVSS 3.x base score of 6.5. 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-476.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
CVSS v2: 3.3
EPSS exploit prediction: 0% (39th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-476
Affected product: Moxa Oncell G3150-hspa-t Firmware
Published: 2018-03-05
Last modified: 2026-06-17

Description

A NULL Pointer Dereference issue was discovered in Moxa OnCell G3100-HSPA Series version 1.4 Build 16062919 and prior. The application does not check for a NULL value, allowing for an attacker to perform a denial of service attack.

Frequently asked questions

What is CVE-2018-5449?: A NULL Pointer Dereference issue was discovered in Moxa OnCell G3100-HSPA Series version 1.4 Build 16062919 and prior. The application does not check for a NULL value, allowing for an attacker to perform a denial of service attack.
How severe is CVE-2018-5449?: CVE-2018-5449 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over an adjacent network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2018-5449 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (39th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-5449?: CVE-2018-5449 primarily affects Moxa Oncell G3150-hspa-t 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-2018-5449?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2018-5449 published?: CVE-2018-5449 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_g3150-hspa-t_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_g3110-hspa_firmware:*:*:*:*:*:*:*:*

More vulnerabilities in Moxa Oncell G3150-hspa-t Firmware

CVE-2018-11422 — Critical (CVSS 9.8): Moxa OnCell G3100-HSPA Series version 1.6 Build 17100315 and prior use a proprietary configuration protocol that does…
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CVE-2018-11427 — High (CVSS 8.8): CSRF tokens are not used in the web application of Moxa OnCell G3100-HSPA Series version 1.4 Build 16062919 and prior,…

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