How severe is CVE-2017-11398?

CVE-2017-11398 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2017-11398 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 8% (94th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2017-11398?

CVE-2017-11398 affects Trendmicro Smart Protection Server. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2017-11398?

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-2017-11398 published?

CVE-2017-11398 was published on 2018-01-19 and last updated on 2026-06-17.

CVE-2017-11398

CVE-2017-11398 is a high-severity vulnerability in Trendmicro Smart Protection Server with a CVSS 3.x base score of 8.8. 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-534.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v2: 6.8
EPSS exploit prediction: 8% (94th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-534
Affected product: Trendmicro Smart Protection Server
Published: 2018-01-19
Last modified: 2026-06-17

Description

A session hijacking via log disclosure vulnerability in Trend Micro Smart Protection Server (Standalone) versions 3.2 and below could allow an unauthenticated attacker to hijack active user sessions to perform authenticated requests on a vulnerable system.

Frequently asked questions

What is CVE-2017-11398?: A session hijacking via log disclosure vulnerability in Trend Micro Smart Protection Server (Standalone) versions 3.2 and below could allow an unauthenticated attacker to hijack active user sessions to perform authenticated requests on a vulnerable system.
How severe is CVE-2017-11398?: CVE-2017-11398 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2017-11398 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 8% (94th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2017-11398?: CVE-2017-11398 affects Trendmicro Smart Protection Server. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2017-11398?: 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-2017-11398 published?: CVE-2017-11398 was published on 2018-01-19 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:trendmicro:smart_protection_server:*:*:*:*:*:*:*:*

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