How severe is CVE-2020-14030?

CVE-2020-14030 has a CVSS 3.x base score of 7.2, rated high severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2020-14030 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (76th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-14030?

CVE-2020-14030 affects Ozeki Ozeki Ng Sms Gateway. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-14030?

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-2020-14030 published?

CVE-2020-14030 was published on 2020-09-30 and last updated on 2026-06-17.

CVE-2020-14030

CVE-2020-14030 is a high-severity vulnerability in Ozeki Ozeki Ng Sms Gateway with a CVSS 3.x base score of 7.2. 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-502.

Key facts

Severity: High (CVSS 3.x base score 7.2)
CVSS v2: 6.5
EPSS exploit prediction: 2% (76th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-502
Affected product: Ozeki Ozeki Ng Sms Gateway
Published: 2020-09-30
Last modified: 2026-06-17

Description

An issue was discovered in Ozeki NG SMS Gateway through 4.17.6. It stores SMS messages in .NET serialized format on the filesystem. By generating (and writing to the disk) malicious .NET serialized files, an attacker can trick the product into deserializing them, resulting in arbitrary code execution.

Frequently asked questions

What is CVE-2020-14030?: An issue was discovered in Ozeki NG SMS Gateway through 4.17.6. It stores SMS messages in .NET serialized format on the filesystem. By generating (and writing to the disk) malicious .NET serialized files, an attacker can trick the product into deserializing them, resulting in arbitrary code execution.
How severe is CVE-2020-14030?: CVE-2020-14030 has a CVSS 3.x base score of 7.2, rated high severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2020-14030 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (76th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-14030?: CVE-2020-14030 affects Ozeki Ozeki Ng Sms Gateway. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-14030?: 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-2020-14030 published?: CVE-2020-14030 was published on 2020-09-30 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:ozeki:ozeki_ng_sms_gateway:*:*:*:*:*:*:*:*

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