How severe is CVE-2018-18369?

CVE-2018-18369 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-2018-18369 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (82nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-18369?

CVE-2018-18369 primarily affects Symantec Endpoint Protection. In total, 5 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2018-18369?

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-2018-18369 published?

CVE-2018-18369 was published on 2019-04-25 and last updated on 2026-06-17.

CVE-2018-18369

CVE-2018-18369 is a high-severity vulnerability in Symantec Endpoint Protection 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% (82nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-426
Affected product: Symantec Endpoint Protection
Published: 2019-04-25
Last modified: 2026-06-17

Description

Norton Security (Windows client) prior to 22.16.3 and SEP SBE (Windows client) prior to Cloud Agent 3.00.31.2817, NIS-22.15.2.22 & SEP-12.1.7484.7002, 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-2018-18369?: Norton Security (Windows client) prior to 22.16.3 and SEP SBE (Windows client) prior to Cloud Agent 3.00.31.2817, NIS-22.15.2.22 & SEP-12.1.7484.7002, 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-2018-18369?: CVE-2018-18369 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-2018-18369 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (82nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-18369?: CVE-2018-18369 primarily affects Symantec Endpoint Protection. In total, 5 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2018-18369?: 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-2018-18369 published?: CVE-2018-18369 was published on 2019-04-25 and last updated on 2026-06-17.

References

Affected products (5)

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_cloud:*:*:*:*:*:*:*:*
cpe:2.3:a:symantec:endpoint_protection_cloud_agent:*:*:*:*:small_business:*:*:*
cpe:2.3:a:symantec:norton_security:*:*:*:*:*:windows:*:*

More vulnerabilities in Symantec Endpoint Protection

CVE-2010-0108 — Critical (CVSS 10.0): Buffer overflow in the cliproxy.objects.1 ActiveX control in the Symantec Client Proxy (CLIproxy.dll) in Symantec…
CVE-2009-1429 — Critical (CVSS 10.0): The Intel LANDesk Common Base Agent (CBA) in Symantec Alert Management System 2 (AMS2), as used in Symantec System…
CVE-2016-3645 — Critical (CVSS 9.8): Integer overflow in the TNEF unpacker in the AntiVirus Decomposer engine in Symantec Advanced Threat Protection (ATP);…
CVE-2012-4953 — Critical (CVSS 9.3): The decomposer engine in Symantec Endpoint Protection (SEP) 11.0, Symantec Endpoint Protection Small Business Edition…
CVE-2012-0295 — Critical (CVSS 9.3): The Manager service in the management console in Symantec Endpoint Protection (SEP) 12.1 before 12.1 RU1-MP1 allows…
CVE-2009-1431 — Critical (CVSS 9.3): XFR.EXE in the Intel File Transfer service in the console in Symantec Alert Management System 2 (AMS2), as used in…

All CVEs affecting Symantec Endpoint Protection →

Other CWE-426 (Untrusted Search Path) vulnerabilities

CVE-2026-45772 — Critical (CVSS 9.8): Turborepo is a high-performance build system for JavaScript and TypeScript codebases. From 1.1.0 to before 2.9.14,…
CVE-2025-26155 — Critical (CVSS 9.8): NCP Secure Enterprise Client 13.18 and NCP Secure Entry Windows Client 13.19 have an Untrusted Search Path…
CVE-2024-53866 — Critical (CVSS 9.8): The package manager pnpm prior to version 9.15.0 seems to mishandle overrides and global cache: Overrides from one…
CVE-2024-38462 — Critical (CVSS 9.8): iRODS before 4.3.2 provides an msiSendMail function with a problematic dependency on the mail binary, such as in the…
CVE-2023-30330 — Critical (CVSS 9.8): SoftExpert (SE) Excellence Suite 2.x versions before 2.1.3 is vulnerable to Local File Inclusion in the function…
CVE-2022-24826 — Critical (CVSS 9.8): On Windows, if Git LFS operates on a malicious repository with a `..exe` file as well as a file named `git.exe`, and…

Browse all CWE-426 (Untrusted Search Path) vulnerabilities →