How severe is CVE-2024-4640?

CVE-2024-4640 has a CVSS 3.x base score of 7.1, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability high.

Is CVE-2024-4640 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (31st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2024-4640?

CVE-2024-4640 primarily affects Moxa Oncell G3470a-lte-us-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-2024-4640?

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.

Does CVE-2024-4640 have an EU (EUVD) identifier?

Yes. CVE-2024-4640 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-44244.

When was CVE-2024-4640 published?

CVE-2024-4640 was published on 2024-06-25 and last updated on 2026-06-17.

CVE-2024-4640

CVE-2024-4640 is a high-severity vulnerability in Moxa Oncell G3470a-lte-us-t Firmware with a CVSS 3.x base score of 7.1. 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-120.

Key facts

Severity: High (CVSS 3.x base score 7.1)
EPSS exploit prediction: 0% (31st percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2024-44244
Weakness: CWE-120
Affected product: Moxa Oncell G3470a-lte-us-t Firmware
Published: 2024-06-25
Last modified: 2026-06-17

Description

OnCell G3470A-LTE Series firmware versions v1.7.7 and prior have been identified as vulnerable due to missing bounds checking on buffer operations. An attacker could write past the boundaries of allocated buffer regions in memory, causing a program crash.

Frequently asked questions

What is CVE-2024-4640?: OnCell G3470A-LTE Series firmware versions v1.7.7 and prior have been identified as vulnerable due to missing bounds checking on buffer operations. An attacker could write past the boundaries of allocated buffer regions in memory, causing a program crash.
How severe is CVE-2024-4640?: CVE-2024-4640 has a CVSS 3.x base score of 7.1, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability high.
Is CVE-2024-4640 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (31st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2024-4640?: CVE-2024-4640 primarily affects Moxa Oncell G3470a-lte-us-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-2024-4640?: 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.
Does CVE-2024-4640 have an EU (EUVD) identifier?: Yes. CVE-2024-4640 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-44244.
When was CVE-2024-4640 published?: CVE-2024-4640 was published on 2024-06-25 and last updated on 2026-06-17.

References

https://www.moxa.com/en/support/product-support/security-advisory/mpsa-242550-oncell-g3470a-lte-series-multiple-web-application-vulnerabilities

Affected products (4)

cpe:2.3:o:moxa:oncell_g3470a-lte-us-t_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:moxa:oncell_g3470a-lte-eu_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:moxa:oncell_g3470a-lte-eu-t_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:moxa:oncell_g3470a-lte-us_firmware:*:*:*:*:*:*:*:*

More vulnerabilities in Moxa Oncell G3470a-lte-us-t Firmware

CVE-2018-11425 — Critical (CVSS 9.8): Memory corruption issue was discovered in Moxa OnCell G3470A-LTE Series version 1.6 Build 18021314 and prior, a…
CVE-2018-11424 — High (CVSS 7.5): There is Memory corruption in the web interface of Moxa OnCell G3470A-LTE Series version 1.6 Build 18021314 and prior,…
CVE-2024-4639 — High (CVSS 7.1): OnCell G3470A-LTE Series firmware versions v1.7.7 and prior have been identified as vulnerable due to a lack of…
CVE-2024-4638 — High (CVSS 7.1): OnCell G3470A-LTE Series firmware versions v1.7.7 and prior have been identified as vulnerable due to a lack of…
CVE-2024-4641 — Medium (CVSS 6.3): OnCell G3470A-LTE Series firmware versions v1.7.7 and prior have been identified as vulnerable due to accepting a…

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