CVE-2018-18366 json
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 t…
published 2019-04-25 7 y ago modified 2026-06-17 4 mo ago also EUVD-2018-10097
- cvss
- 6.5
- version 3.0, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.4%
- EPSS 0.4% chance of exploitation in 30 days, percentile 32%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- symantec endpoint_protection_cloud 22.16.3
- symantec endpoint_protection_cloud_agent 3.00.31.2817
- symantec norton_security 22.16.3
Exploit prediction
0.39% chance of exploitation in the next 30 days, higher than 32% of all scored CVEs (FIRST EPSS, 2026-11-09).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.0 | 6.5 | CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N |
| NVD | 2.0 | 2.1 | AV:L/AC:L/Au:N/C:P/I:N/A:N |
Affected products
- Symantec Corporation Norton Security
- Symantec Corporation SEP (Windows client)
- Symantec Corporation SEP SBE
- Symantec Corporation SEP Cloud
Classification
- Weakness
-
- CWE-908 Use of Uninitialized Resource
References
-
support.symantec.com
/en_US/article.SYMSA1479.html
vendor-advisory
-
securityfocus.com
/bid/107994
vdb-entry, third-party-advisory
Sources
- CVE List CVE-2018-18366
- NVD CVE-2018-18366
Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.