How severe is CVE-2016-4351?

CVE-2016-4351 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2016-4351 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (85th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2016-4351?

CVE-2016-4351 affects Trendmicro Email Encryption Gateway. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2016-4351?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2016-4351 published?

CVE-2016-4351 was published on 2016-05-05 and last updated on 2026-06-17.

CVE-2016-4351

CVE-2016-4351 is a critical-severity vulnerability in Trendmicro Email Encryption Gateway with a CVSS 3.x base score of 9.8. 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-89.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 7.5
EPSS exploit prediction: 3% (85th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-89
Affected product: Trendmicro Email Encryption Gateway
Published: 2016-05-05
Last modified: 2026-06-17

Description

SQL injection vulnerability in the authentication functionality in Trend Micro Email Encryption Gateway (TMEEG) 5.5 before build 1107 allows remote attackers to execute arbitrary SQL commands via unspecified vectors.

Frequently asked questions

What is CVE-2016-4351?: SQL injection vulnerability in the authentication functionality in Trend Micro Email Encryption Gateway (TMEEG) 5.5 before build 1107 allows remote attackers to execute arbitrary SQL commands via unspecified vectors.
How severe is CVE-2016-4351?: CVE-2016-4351 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2016-4351 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (85th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2016-4351?: CVE-2016-4351 affects Trendmicro Email Encryption Gateway. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2016-4351?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2016-4351 published?: CVE-2016-4351 was published on 2016-05-05 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:trendmicro:email_encryption_gateway:*:*:*:*:*:*:*:*

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