How severe is CVE-2017-11397?

CVE-2017-11397 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2017-11397 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (75th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2017-11397?

CVE-2017-11397 affects Trendmicro Encryption For Email. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2017-11397?

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-2017-11397 published?

CVE-2017-11397 was published on 2017-12-16 and last updated on 2026-06-17.

CVE-2017-11397

CVE-2017-11397 is a high-severity vulnerability in Trendmicro Encryption For Email with a CVSS 3.x base score of 7.8. 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-426.

Key facts

Severity: High (CVSS 3.x base score 7.8)
CVSS v2: 6.8
EPSS exploit prediction: 2% (75th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-426
Affected product: Trendmicro Encryption For Email
Published: 2017-12-16
Last modified: 2026-06-17

Description

A service DLL preloading vulnerability in Trend Micro Encryption for Email versions 5.6 and below could allow an unauthenticated remote attacker to execute arbitrary code on a vulnerable system.

Frequently asked questions

What is CVE-2017-11397?: A service DLL preloading vulnerability in Trend Micro Encryption for Email versions 5.6 and below could allow an unauthenticated remote attacker to execute arbitrary code on a vulnerable system.
How severe is CVE-2017-11397?: CVE-2017-11397 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2017-11397 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (75th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2017-11397?: CVE-2017-11397 affects Trendmicro Encryption For Email. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2017-11397?: 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-2017-11397 published?: CVE-2017-11397 was published on 2017-12-16 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:trendmicro:encryption_for_email:*:*:*:*:*:*:*:*

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