CVE-2024-4640 | OnCell G3470A-LTE Series: Authenticated Command Injection via sendTestEmail

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.

Published: 2024-06-25 Last update: 2026-06-17 Assigner: [email protected] Source: [email protected]
NVD Status：Analyzed，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2024-4640 is rated Low Risk (38.8/100): CVSS High severity, with low exploitation likelihood (EPSS 0.39%). Monitor for updates and reassess as exploit intelligence or EPSS changes.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2024-4640

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 0.73% 0.39% -0.33%
2 2025-11-21 0.34% 0.73% +0.39%
3 2025-11-18 — 0.34% —

Full EPSS history (12 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2024-4640

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.1 3.1 HIGH
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:L)
A normal user session is enough; they don’t have to be admin.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:L)
Attackers could change some data, but it’s limited—not everything goes.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 2.8 4.2 [email protected]
8.2 3.1 HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:L)
Attackers could change some data, but it’s limited—not everything goes.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 3.9 4.2 [email protected]

Weakness enumeration for CVE-2024-4640

Affected software / configurations for CVE-2024-4640

Vendor Product Version Raw CPE
moxa oncell_g3470a-lte-us-t_firmware <= 1.7.7 cpe:2.3:o:moxa:oncell_g3470a-lte-us-t_firmware:*:*:*:*:*:*:*:*
moxa oncell_g3470a-lte-eu_firmware <= 1.7.7 cpe:2.3:o:moxa:oncell_g3470a-lte-eu_firmware:*:*:*:*:*:*:*:*
moxa oncell_g3470a-lte-eu-t_firmware <= 1.7.7 cpe:2.3:o:moxa:oncell_g3470a-lte-eu-t_firmware:*:*:*:*:*:*:*:*
moxa oncell_g3470a-lte-us_firmware <= 1.7.7 cpe:2.3:o:moxa:oncell_g3470a-lte-us_firmware:*:*:*:*:*:*:*:*

References for CVE-2024-4640

cvelogic Threat Intelligence