CVE-2018-18366 Vulnerability Analysis & Exploit Details

CVE-2018-18366
Vulnerability Scoring

6.5
/10
High Risk

If left unpatched, CVE-2018-18366 could lead to major system disruptions or data loss.

Attack Complexity Details

  • Attack Complexity: Low
    Exploits can be performed without significant complexity or special conditions.
  • Attack Vector: Local
    Vulnerability requires local system access.
  • Privileges Required: Low
    Some privileges are necessary to exploit the vulnerability.
  • Scope: Changed
    Successful exploitation can impact components beyond the vulnerable component.
  • User Interaction: None
    No user interaction is necessary for exploitation.

CVE-2018-18366 Details

Status: Modified

Last updated: 🕞 21 Nov 2024, 03:55 UTC
Originally published on: 🕗 25 Apr 2019, 20:29 UTC

Time between publication and last update: 2036 days

CVSS Release: version 3

CVSS3 Source

nvd@nist.gov

CVSS3 Type

Primary

CVSS3 Vector

CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N

CVE-2018-18366 Vulnerability Summary

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 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.

Assessing the Risk of CVE-2018-18366

Access Complexity Graph

The exploitability of CVE-2018-18366 depends on two key factors: attack complexity (the level of effort required to execute an exploit) and privileges required (the access level an attacker needs).

Exploitability Analysis for CVE-2018-18366

CVE-2018-18366 presents an accessible attack vector with minimal effort required. Restricting access controls and implementing security updates are critical to reducing exploitation risks.

Understanding AC and PR

A lower complexity and fewer privilege requirements make exploitation easier. Security teams should evaluate these aspects to determine the urgency of mitigation strategies, such as patch management and access control policies.

Attack Complexity (AC) measures the difficulty in executing an exploit. A high AC means that specific conditions must be met, making an attack more challenging, while a low AC means the vulnerability can be exploited with minimal effort.

Privileges Required (PR) determine the level of system access necessary for an attack. Vulnerabilities requiring no privileges are more accessible to attackers, whereas high privilege requirements limit exploitation to authorized users with elevated access.

CVSS Score Breakdown Chart

Above is the CVSS Sub-score Breakdown for CVE-2018-18366, illustrating how Base, Impact, and Exploitability factors combine to form the overall severity rating. A higher sub-score typically indicates a more severe or easier-to-exploit vulnerability.

CIA Impact Analysis

Below is the Impact Analysis for CVE-2018-18366, showing how Confidentiality, Integrity, and Availability might be affected if the vulnerability is exploited. Higher values usually signal greater potential damage.

  • Confidentiality: High
    Exploiting CVE-2018-18366 can result in unauthorized access to sensitive data, severely compromising data privacy.
  • Integrity: None
    CVE-2018-18366 poses no threat to data integrity.
  • Availability: None
    CVE-2018-18366 does not impact system availability.

Exploit Prediction Scoring System (EPSS)

The EPSS score estimates the probability that this vulnerability will be exploited in the near future.

EPSS Score: 0.045% (probability of exploit)

EPSS Percentile: 16.85% (lower percentile = lower relative risk)
This vulnerability is less risky than approximately 83.15% of others.

CVE-2018-18366 References

External References

CWE Common Weakness Enumeration

CWE-908

Vulnerable Configurations

  • cpe:2.3:a:symantec:endpoint_protection:11.0:*:*:*:*:windows:*:*
    cpe:2.3:a:symantec:endpoint_protection:11.0:*:*:*:*:windows:*:*
  • cpe:2.3:a:symantec:endpoint_protection:11.0:mr1:*:*:*:windows:*:*
    cpe:2.3:a:symantec:endpoint_protection:11.0:mr1:*:*:*:windows:*:*
  • cpe:2.3:a:symantec:endpoint_protection:11.0:mr2:*:*:*:windows:*:*
    cpe:2.3:a:symantec:endpoint_protection:11.0:mr2:*:*:*:windows:*:*
  • cpe:2.3:a:symantec:endpoint_protection:11.0:mr3:*:*:*:windows:*:*
    cpe:2.3:a:symantec:endpoint_protection:11.0:mr3:*:*:*:windows:*:*
  • cpe:2.3:a:symantec:endpoint_protection:11.0:mr4:*:*:*:windows:*:*
    cpe:2.3:a:symantec:endpoint_protection:11.0:mr4:*:*:*:windows:*:*
  • cpe:2.3:a:symantec:endpoint_protection:11.0:mr4-mp2:*:*:*:windows:*:*
    cpe:2.3:a:symantec:endpoint_protection:11.0:mr4-mp2:*:*:*:windows:*:*
  • cpe:2.3:a:symantec:endpoint_protection:11.0:ru5:*:*:*:windows:*:*
    cpe:2.3:a:symantec:endpoint_protection:11.0:ru5:*:*:*:windows:*:*
  • cpe:2.3:a:symantec:endpoint_protection:11.0:ru6:*:*:*:windows:*:*
    cpe:2.3:a:symantec:endpoint_protection:11.0:ru6:*:*:*:windows:*:*
  • cpe:2.3:a:symantec:endpoint_protection:11.0:ru6-mp1:*:*:*:windows:*:*
    cpe:2.3:a:symantec:endpoint_protection:11.0:ru6-mp1:*:*:*:windows:*:*
  • cpe:2.3:a:symantec:endpoint_protection:11.0:ru6-mp2:*:*:*:windows:*:*
    cpe:2.3:a:symantec:endpoint_protection:11.0:ru6-mp2:*:*:*:windows:*:*
  • cpe:2.3:a:symantec:endpoint_protection:11.0:ru6-mp3:*:*:*:windows:*:*
    cpe:2.3:a:symantec:endpoint_protection:11.0:ru6-mp3:*:*:*:windows:*:*
  • cpe:2.3:a:symantec:endpoint_protection:11.0:ru6a:*:*:*:windows:*:*
    cpe:2.3:a:symantec:endpoint_protection:11.0:ru6a:*:*:*:windows:*:*
  • cpe:2.3:a:symantec:endpoint_protection:11.0:ru7:*:*:*:windows:*:*
    cpe:2.3:a:symantec:endpoint_protection:11.0:ru7:*:*:*:windows:*:*
  • cpe:2.3:a:symantec:endpoint_protection:11.0:ru7-mp1:*:*:*:windows:*:*
    cpe:2.3:a:symantec:endpoint_protection:11.0:ru7-mp1:*:*:*:windows:*:*
  • cpe:2.3:a:symantec:endpoint_protection:11.0:ru7-mp2:*:*:*:windows:*:*
    cpe:2.3:a:symantec:endpoint_protection:11.0:ru7-mp2:*:*:*:windows:*:*
  • cpe:2.3:a:symantec:endpoint_protection:11.0:ru7-mp4:*:*:*:windows:*:*
    cpe:2.3:a:symantec:endpoint_protection:11.0:ru7-mp4:*:*:*:windows:*:*
  • cpe:2.3:a:symantec:endpoint_protection:11.0:ru7-mp4a:*:*:*:windows:*:*
    cpe:2.3:a:symantec:endpoint_protection:11.0:ru7-mp4a:*:*:*:windows:*:*
  • cpe:2.3:a:symantec:endpoint_protection:11.0:ry7-mp3:*:*:*:windows:*:*
    cpe:2.3:a:symantec:endpoint_protection:11.0:ry7-mp3:*:*:*:windows:*:*
  • cpe:2.3:a:symantec:endpoint_protection:12.1:*:*:*:*:windows:*:*
    cpe:2.3:a:symantec:endpoint_protection:12.1:*:*:*:*:windows:*:*
  • cpe:2.3:a:symantec:endpoint_protection:12.1:ru1:*:*:*:windows:*:*
    cpe:2.3:a:symantec:endpoint_protection:12.1:ru1:*:*:*:windows:*:*
  • cpe:2.3:a:symantec:endpoint_protection:12.1:ru1-mp1:*:*:*:windows:*:*
    cpe:2.3:a:symantec:endpoint_protection:12.1:ru1-mp1:*:*:*:windows:*:*
  • cpe:2.3:a:symantec:endpoint_protection:12.1:ru2:*:*:*:windows:*:*
    cpe:2.3:a:symantec:endpoint_protection:12.1:ru2:*:*:*:windows:*:*
  • cpe:2.3:a:symantec:endpoint_protection:12.1:ru2-mp1:*:*:*:windows:*:*
    cpe:2.3:a:symantec:endpoint_protection:12.1:ru2-mp1:*:*:*:windows:*:*
  • cpe:2.3:a:symantec:endpoint_protection:12.1:ru3:*:*:*:windows:*:*
    cpe:2.3:a:symantec:endpoint_protection:12.1:ru3:*:*:*:windows:*:*
  • cpe:2.3:a:symantec:endpoint_protection:12.1:ru4:*:*:*:windows:*:*
    cpe:2.3:a:symantec:endpoint_protection:12.1:ru4:*:*:*:windows:*:*
  • cpe:2.3:a:symantec:endpoint_protection:12.1:ru4-mp1:*:*:*:windows:*:*
    cpe:2.3:a:symantec:endpoint_protection:12.1:ru4-mp1:*:*:*:windows:*:*
  • cpe:2.3:a:symantec:endpoint_protection:12.1:ru4-mp1a:*:*:*:windows:*:*
    cpe:2.3:a:symantec:endpoint_protection:12.1:ru4-mp1a:*:*:*:windows:*:*
  • cpe:2.3:a:symantec:endpoint_protection:12.1:ru4-mp1b:*:*:*:windows:*:*
    cpe:2.3:a:symantec:endpoint_protection:12.1:ru4-mp1b:*:*:*:windows:*:*
  • cpe:2.3:a:symantec:endpoint_protection:12.1:ru4a:*:*:*:windows:*:*
    cpe:2.3:a:symantec:endpoint_protection:12.1:ru4a:*:*:*:windows:*:*
  • cpe:2.3:a:symantec:endpoint_protection:12.1:ru5:*:*:*:windows:*:*
    cpe:2.3:a:symantec:endpoint_protection:12.1:ru5:*:*:*:windows:*:*
  • cpe:2.3:a:symantec:endpoint_protection:12.1:ru6:*:*:*:windows:*:*
    cpe:2.3:a:symantec:endpoint_protection:12.1:ru6:*:*:*:windows:*:*
  • cpe:2.3:a:symantec:endpoint_protection:12.1:ru6-mp1:*:*:*:windows:*:*
    cpe:2.3:a:symantec:endpoint_protection:12.1:ru6-mp1:*:*:*:windows:*:*
  • cpe:2.3:a:symantec:endpoint_protection:12.1:ru6-mp10:*:*:*:windows:*:*
    cpe:2.3:a:symantec:endpoint_protection:12.1:ru6-mp10:*:*:*:windows:*:*
  • cpe:2.3:a:symantec:endpoint_protection:12.1:ru6-mp2:*:*:*:windows:*:*
    cpe:2.3:a:symantec:endpoint_protection:12.1:ru6-mp2:*:*:*:windows:*:*
  • cpe:2.3:a:symantec:endpoint_protection:12.1:ru6-mp3:*:*:*:windows:*:*
    cpe:2.3:a:symantec:endpoint_protection:12.1:ru6-mp3:*:*:*:windows:*:*
  • cpe:2.3:a:symantec:endpoint_protection:12.1:ru6-mp4:*:*:*:windows:*:*
    cpe:2.3:a:symantec:endpoint_protection:12.1:ru6-mp4:*:*:*:windows:*:*
  • cpe:2.3:a:symantec:endpoint_protection:12.1:ru6-mp5:*:*:*:windows:*:*
    cpe:2.3:a:symantec:endpoint_protection:12.1:ru6-mp5:*:*:*:windows:*:*
  • cpe:2.3:a:symantec:endpoint_protection:12.1:ru6-mp6:*:*:*:windows:*:*
    cpe:2.3:a:symantec:endpoint_protection:12.1:ru6-mp6:*:*:*:windows:*:*
  • cpe:2.3:a:symantec:endpoint_protection:12.1:ru6-mp7:*:*:*:windows:*:*
    cpe:2.3:a:symantec:endpoint_protection:12.1:ru6-mp7:*:*:*:windows:*:*
  • cpe:2.3:a:symantec:endpoint_protection:12.1:ru6-mp8:*:*:*:windows:*:*
    cpe:2.3:a:symantec:endpoint_protection:12.1:ru6-mp8:*:*:*:windows:*:*
  • cpe:2.3:a:symantec:endpoint_protection:14:*:*:*:*:windows:*:*
    cpe:2.3:a:symantec:endpoint_protection:14:*:*:*:*:windows:*:*
  • cpe:2.3:a:symantec:endpoint_protection:14:mp1:*:*:*:windows:*:*
    cpe:2.3:a:symantec:endpoint_protection:14:mp1:*:*:*:windows:*:*
  • cpe:2.3:a:symantec:endpoint_protection:14.0.0:mp2:*:*:*:windows:*:*
    cpe:2.3:a:symantec:endpoint_protection:14.0.0:mp2:*:*:*:windows:*:*
  • cpe:2.3:a:symantec:endpoint_protection:14.0.1:*:*:*:*:windows:*:*
    cpe:2.3:a:symantec:endpoint_protection:14.0.1:*:*:*:*:windows:*:*
  • cpe:2.3:a:symantec:endpoint_protection:14.0.1:mp1:*:*:*:windows:*:*
    cpe:2.3:a:symantec:endpoint_protection:14.0.1:mp1:*:*:*:windows:*:*
  • cpe:2.3:a:symantec:endpoint_protection:14.0.1:mp2:*:*:*:windows:*:*
    cpe:2.3:a:symantec:endpoint_protection:14.0.1:mp2:*:*:*:windows:*:*
  • cpe:2.3:a:symantec:endpoint_protection:14.2:*:*:*:*:windows:*:*
    cpe:2.3:a:symantec:endpoint_protection:14.2:*:*:*:*:windows:*:*
  • cpe:2.3:a:symantec:endpoint_protection:14.2:mp1:*:*:*:windows:*:*
    cpe:2.3:a:symantec:endpoint_protection:14.2:mp1:*:*:*:windows:*:*
  • cpe:2.3:a:symantec:endpoint_protection:nis-22.15.2.22:*:*:*:small_business:*:*:*
    cpe:2.3:a:symantec:endpoint_protection:nis-22.15.2.22:*:*:*:small_business:*:*:*
  • cpe:2.3:a:symantec:endpoint_protection:sep-12.1.7484.7002:*:*:*:small_business:*:*:*
    cpe:2.3:a:symantec:endpoint_protection:sep-12.1.7484.7002:*:*:*:small_business:*:*:*
  • cpe:2.3:a:symantec:norton_security:-:*:*:*:*:*:*:*
    cpe:2.3:a:symantec:norton_security:-:*:*:*:*:*:*:*
  • cpe:2.3:a:symantec:norton_security:13.0.1:*:*:*:*:macos:*:*
    cpe:2.3:a:symantec:norton_security:13.0.1:*:*:*:*:macos:*:*

Protect Your Infrastructure against CVE-2018-18366: Combat Critical CVE Threats

Stay updated with real-time CVE vulnerabilities and take action to secure your systems. Enhance your cybersecurity posture with the latest threat intelligence and mitigation techniques. Develop the skills necessary to defend against CVEs and secure critical infrastructures. Join the top cybersecurity professionals safeguarding today's infrastructures.

Other 5 Recently Published CVEs Vulnerabilities

  • CVE-2025-3797 – A vulnerability classified as critical was found in SeaCMS up to 13.3. This vulnerability affects unknown code of the file /admin_topic.php?action=...
  • CVE-2025-3809 – The Debug Log Manager plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the auto-refresh debug log in all versions up to, and i...
  • CVE-2025-2111 – The Insert Headers And Footers plugin for WordPress is vulnerable to Cross-Site Request Forgery in all versions up to, and including, 3.1.1. This i...
  • CVE-2024-13926 – The WP-Syntax WordPress plugin through 1.2 does not properly handle input, allowing an attacker to create a post containing a large number of tags,...
  • CVE-2025-3103 – The CLEVER - HTML5 Radio Player With History - Shoutcast and Icecast - Elementor Widget Addon plugin for WordPress is vulnerable to arbitrary file ...