How severe is CVE-2018-18367?

CVE-2018-18367 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-2018-18367 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (74th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-18367?

CVE-2018-18367 primarily affects Symantec Endpoint Protection Manager. In total, 32 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2018-18367?

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-2018-18367 published?

CVE-2018-18367 was published on 2019-04-25 and last updated on 2026-06-17.

CVE-2018-18367

CVE-2018-18367 is a high-severity vulnerability in Symantec Endpoint Protection Manager 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% (74th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-426
Affected product: Symantec Endpoint Protection Manager
Published: 2019-04-25
Last modified: 2026-06-17

Description

Symantec Endpoint Protection Manager (SEPM) prior to and including 12.1 RU6 MP9 and prior to 14.2 RU1 may be susceptible to a DLL Preloading vulnerability, which is a type of issue that can occur when an application looks to call a DLL for execution and an attacker provides a malicious DLL to use instead.

Frequently asked questions

What is CVE-2018-18367?: Symantec Endpoint Protection Manager (SEPM) prior to and including 12.1 RU6 MP9 and prior to 14.2 RU1 may be susceptible to a DLL Preloading vulnerability, which is a type of issue that can occur when an application looks to call a DLL for execution and an attacker provides a malicious DLL to use instead.
How severe is CVE-2018-18367?: CVE-2018-18367 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-2018-18367 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (74th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-18367?: CVE-2018-18367 primarily affects Symantec Endpoint Protection Manager. In total, 32 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2018-18367?: 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-2018-18367 published?: CVE-2018-18367 was published on 2019-04-25 and last updated on 2026-06-17.

References

Affected products (32)

cpe:2.3:a:symantec:endpoint_protection_manager:12.1:rtm:*:*:*:*:*:*
cpe:2.3:a:symantec:endpoint_protection_manager:12.1:ru1:*:*:*:*:*:*
cpe:2.3:a:symantec:endpoint_protection_manager:12.1:ru1-mp1:*:*:*:*:*:*
cpe:2.3:a:symantec:endpoint_protection_manager:12.1:ru2:*:*:*:*:*:*
cpe:2.3:a:symantec:endpoint_protection_manager:12.1:ru2-mp1:*:*:*:*:*:*
cpe:2.3:a:symantec:endpoint_protection_manager:12.1:ru3:*:*:*:*:*:*
cpe:2.3:a:symantec:endpoint_protection_manager:12.1:ru4:*:*:*:*:*:*
cpe:2.3:a:symantec:endpoint_protection_manager:12.1:ru4-mp1:*:*:*:*:*:*
cpe:2.3:a:symantec:endpoint_protection_manager:12.1:ru4-mp1a:*:*:*:*:*:*
cpe:2.3:a:symantec:endpoint_protection_manager:12.1:ru4-mp1b:*:*:*:*:*:*
cpe:2.3:a:symantec:endpoint_protection_manager:12.1:ru4a:*:*:*:*:*:*
cpe:2.3:a:symantec:endpoint_protection_manager:12.1:ru5:*:*:*:*:*:*
cpe:2.3:a:symantec:endpoint_protection_manager:12.1:ru6:*:*:*:*:*:*
cpe:2.3:a:symantec:endpoint_protection_manager:12.1:ru6-mp1:*:*:*:*:*:*
cpe:2.3:a:symantec:endpoint_protection_manager:12.1:ru6-mp1a:*:*:*:*:*:*
cpe:2.3:a:symantec:endpoint_protection_manager:12.1:ru6-mp2:*:*:*:*:*:*
cpe:2.3:a:symantec:endpoint_protection_manager:12.1:ru6-mp3:*:*:*:*:*:*
cpe:2.3:a:symantec:endpoint_protection_manager:12.1:ru6-mp4:*:*:*:*:*:*
cpe:2.3:a:symantec:endpoint_protection_manager:12.1:ru6-mp5:*:*:*:*:*:*
cpe:2.3:a:symantec:endpoint_protection_manager:12.1:ru6-mp6:*:*:*:*:*:*
cpe:2.3:a:symantec:endpoint_protection_manager:12.1:ru6-mp7:*:*:*:*:*:*
cpe:2.3:a:symantec:endpoint_protection_manager:12.1:ru6-mp8:*:*:*:*:*:*
cpe:2.3:a:symantec:endpoint_protection_manager:12.1:ru6-mp9:*:*:*:*:*:*
cpe:2.3:a:symantec:endpoint_protection_manager:14:*:*:*:*:*:*:*
cpe:2.3:a:symantec:endpoint_protection_manager:14:mp1:*:*:*:*:*:*
cpe:2.3:a:symantec:endpoint_protection_manager:14:mp2:*:*:*:*:*:*
cpe:2.3:a:symantec:endpoint_protection_manager:14.0.1:*:*:*:*:*:*:*
cpe:2.3:a:symantec:endpoint_protection_manager:14.0.1:mp1:*:*:*:*:*:*
cpe:2.3:a:symantec:endpoint_protection_manager:14.0.1:mp2:*:*:*:*:*:*
cpe:2.3:a:symantec:endpoint_protection_manager:14.1:*:*:*:*:*:*:*
cpe:2.3:a:symantec:endpoint_protection_manager:14.2:*:*:*:*:*:*:*
cpe:2.3:a:symantec:endpoint_protection_manager:14.2:mp1:*:*:*:*:*:*

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