How severe is CVE-2018-6234?

CVE-2018-6234 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2018-6234 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (48th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-6234?

CVE-2018-6234 primarily affects Trendmicro Antivirus+. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2018-6234?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2018-6234 published?

CVE-2018-6234 was published on 2018-05-25 and last updated on 2026-06-17.

CVE-2018-6234

CVE-2018-6234 is a medium-severity vulnerability in Trendmicro Antivirus+ with a CVSS 3.x base score of 5.5. 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-125.

Key facts

Severity: Medium (CVSS 3.x base score 5.5)
CVSS v2: 2.1
EPSS exploit prediction: 1% (48th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-125
Affected product: Trendmicro Antivirus+
Published: 2018-05-25
Last modified: 2026-06-17

Description

An Out-of-Bounds Read Information Disclosure vulnerability in Trend Micro Maximum Security (Consumer) 2018 could allow a local attacker to disclose sensitive information on vulnerable installations due to a flaw within processing of IOCTL 0x222814 by the tmnciesc.sys driver. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability.

Frequently asked questions

What is CVE-2018-6234?: An Out-of-Bounds Read Information Disclosure vulnerability in Trend Micro Maximum Security (Consumer) 2018 could allow a local attacker to disclose sensitive information on vulnerable installations due to a flaw within processing of IOCTL 0x222814 by the tmnciesc.sys driver. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability.
How severe is CVE-2018-6234?: CVE-2018-6234 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2018-6234 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (48th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-6234?: CVE-2018-6234 primarily affects Trendmicro Antivirus+. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2018-6234?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2018-6234 published?: CVE-2018-6234 was published on 2018-05-25 and last updated on 2026-06-17.

References

Affected products (4)

cpe:2.3:a:trendmicro:antivirus\+:*:*:*:*:*:*:*:*
cpe:2.3:a:trendmicro:internet_security:*:*:*:*:*:*:*:*
cpe:2.3:a:trendmicro:maximum_security:*:*:*:*:*:*:*:*
cpe:2.3:a:trendmicro:premium_security:*:*:*:*:*:*:*:*

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