What is the CVSS score of CVE-2018-16364?

CVE-2018-16364 has a CVSS 3.1 base score of 8.1 (High). CVSS vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H. EPSS exploitation probability: 15.1%.

Is there a public PoC exploit available for CVE-2018-16364?

Yes, a public proof-of-concept exploit is available for CVE-2018-16364. Prioritise patching immediately. EPSS: 15.1%.

Zoho CVE-2018-16364

HIGH

Deserialization of Untrusted Data (CWE-502)

2018-09-26 cve@mitre.org

RCE Deserialization Microsoft Zoho Manageengine Applications Manager Zohocorp

8.1

CVSS 3.1 · NVD

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Vulnerability Assessment

Weakness	CWE CWE-502 OWASP Top 10:2025 A08:2025 - Software or Data Integrity Failures ASVS 5.0 V1 - Encoding and Sanitization Safe deserialization, type allowlists MITRE ATT&CK 2 techniques across 2 tactics: Execution, Initial Access The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up. Sign in to read
Impact	CVSS score of 8.1 (HIGH). Attack characteristics: network attack vector, high complexity, no privileges required, no user interaction not required. Public proof-of-concept exploit code is available.
Exploit ScenarioDerived	A remote attacker could execute arbitrary code through malicious serialized objects by sending crafted requests to the affected application. No authentication is required to exploit this vulnerability.

This Week Schedule remediation this week. Why: HIGH severity + EPSS > 10%.

No patch listed yet 15.1% exploitation probability (EPSS)

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AnalysisAI

A serialization vulnerability in Zoho ManageEngine Applications Manager before build 13740 allows for remote code execution on Windows via a payload on an SMB share. Rated high severity (CVSS 8.1), this vulnerability is remotely exploitable, no authentication required. Public exploit code available and no vendor patch available.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Avoid deserializing untrusted data. Use safe serialization formats (JSON). Implement integrity checks and type allowlists.

Affects your stack

Find out whether the stacks and servers you run are on an affected version.

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

This vulnerability is classified as Deserialization of Untrusted Data (CWE-502), which allows attackers to execute arbitrary code through malicious serialized objects. A serialization vulnerability in Zoho ManageEngine Applications Manager before build 13740 allows for remote code execution on Windows via a payload on an SMB share. Affected products include: Zohocorp Manageengine Applications Manager.

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Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

NVD PRIMARY 8.1 HIGH

AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector

Network

Attack Complexity

High

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

DescriptionNVD

A serialization vulnerability in Zoho ManageEngine Applications Manager before build 13740 allows for remote code execution on Windows via a payload on an SMB share.

Threat Intelligence Overview

EPSS Score

15.1%

Top 4% exploitable

Exploit

POC

Public exploit code exists

Data Quality

2 sources

Confidence: Low

NVD

CVE.org

EPSS

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue

Severity HIGH

CISA KEV No

Public POC Yes

EPSS 15.1%

Patch available No

Active threat Yes

Deciding rule

HIGH severity + EPSS > 10%

What every action level means

Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.

Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.

This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.

This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.

Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived

Scheduled

Exploitation· derived

Poc

System Exposure· derived

Open

Automatable· derived

Human Impact· derived

Medium

Priority Score

Low Medium High Critical

KEV: 0

EPSS: +15

CVSS: +40

PoC: +20

Weaponized: 0

Threat intel: 0

Gov advisory: 0

Attack Technique

Insecure Deserialization CRITICAL

Insecure deserialization occurs when an application converts serialized data (a stream of bytes representing an object's state) back into a living object without proper validation.

Remote Code Execution CRITICAL

Remote Code Execution represents the critical moment when an attacker successfully runs arbitrary code on a target system without physical access.

Affected Products (CPE)NVD

cpe:2.3:a:zohocorp:manageengine_applications_manager:13.7:-:*:*:*:*:*:*

cpe:2.3:a:zohocorp:manageengine_applications_manager:13.7:build13700:*:*:*:*:*:*

cpe:2.3:a:zohocorp:manageengine_applications_manager:13.7:build13710:*:*:*:*:*:*

cpe:2.3:a:zohocorp:manageengine_applications_manager:13.7:build13720:*:*:*:*:*:*

cpe:2.3:a:zohocorp:manageengine_applications_manager:13.7:build13730:*:*:*:*:*:*

cpe:2.3:a:zohocorp:manageengine_applications_manager:13.7:build13750:*:*:*:*:*:*

cpe:2.3:a:zohocorp:manageengine_applications_manager:13.7:build13760:*:*:*:*:*:*

cpe:2.3:a:zohocorp:manageengine_applications_manager:13.7:build13770:*:*:*:*:*:*

cpe:2.3:a:zohocorp:manageengine_applications_manager:13.7:build13780:*:*:*:*:*:*

cpe:2.3:a:zohocorp:manageengine_applications_manager:13.7:build13790:*:*:*:*:*:*

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