CVE-2018-18366

lowpriority · track · 26EPSS 0.004 · 33 %ileEUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

0.39% (33rd) EPSS

CVSS 2.1 · low

Is it mine?

18 products

Check your exposure

Who says so?

3 sources

cnnvd · enisa_euvd · nvd

EPSS · scored 2026-10-28

Symantec Norton Security prior to 22.16.3, SEP (Windows client) prior to and including 12.1 RU6 MP9, and prior to 14.2 RU1, SEP SBE prior to Cloud Agent 3.00.31.2817, NIS-22.15.2.22, SEP-12.1.7484.7002 and SEP Cloud prior to 22.16.3 may be susceptible to a kernel memory disclosure, which is a type of issue where a specially crafted IRP request can cause the driver to return uninitialized memory.

cvss

Technical severity, 0–10. One row per scoring source.

6.5

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · low–medium · 2.1–6.5

v2.02.1lowAV:L/AC:L/Au:N/C:P/I:N/A:Nprimary · NVD / NIST USexploitability 3.9 · impact 2.9

v3.06.5mediumCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:Nprimary · NVD / NIST USexploitability 2 · impact 4

v3.06mediumCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N/E:Usecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-908USprimary

affected products (18)

Products and version ranges known to be affected.

Symantec Corporation Norton Security≤ Prior to 22.16.3enisa_euvdEU
Symantec Corporation SEP (Windows client)≤ Prior to and including 12.1 RU6 MP9enisa_euvdEU
Symantec Corporation SEP (Windows client)≤ Prior to 14.2 RU1enisa_euvdEU
Symantec Corporation SEP Cloud≤ Prior to 22.16.3enisa_euvdEU
Symantec Corporation SEP SBE≤ NIS-22.15.2.22enisa_euvdEU
Symantec Corporation SEP SBE≤ Prior to Cloud Agent 3.00.31.2817enisa_euvdEU
Symantec Corporation SEP SBE≤ SEP-12.1.7484.7002enisa_euvdEU
symantec endpoint protection= 11.0nvdUScpe:2.3:a:symantec:endpoint_protection:*:*:*:*:*:*:*:*
symantec endpoint protection= 12.1nvdUScpe:2.3:a:symantec:endpoint_protection:*:*:*:*:*:*:*:*
symantec endpoint protection= 14nvdUScpe:2.3:a:symantec:endpoint_protection:*:*:*:*:*:*:*:*
symantec endpoint protection= 14.0.0nvdUScpe:2.3:a:symantec:endpoint_protection:*:*:*:*:*:*:*:*
symantec endpoint protection= 14.0.1nvdUScpe:2.3:a:symantec:endpoint_protection:*:*:*:*:*:*:*:*
symantec endpoint protection= 14.2nvdUScpe:2.3:a:symantec:endpoint_protection:*:*:*:*:*:*:*:*
symantec endpoint protection= nis-22.15.2.22nvdUScpe:2.3:a:symantec:endpoint_protection:*:*:*:*:*:*:*:*
symantec endpoint protection= sep-12.1.7484.7002nvdUScpe:2.3:a:symantec:endpoint_protection:*:*:*:*:*:*:*:*
symantec endpoint protection cloud< 22.16.3nvdUScpe:2.3:a:symantec:endpoint_protection_cloud:*:*:*:*:*:*:*:*
symantec endpoint protection cloud agent< 3.00.31.2817nvdUScpe:2.3:a:symantec:endpoint_protection_cloud_agent:*:*:*:*:*:*:*:*
symantec norton security< 22.16.3nvdUScpe:2.3:a:symantec:norton_security:*:*:*:*:*:*:*:*

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd nvd NVD CVE.org MITRE

published 2019-04-25modified 2026-06-17

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+1059 more

references (14)

External citations — patches, advisories, analysis.

scry

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