What is the CVSS score of CVE-2018-2503?

CVE-2018-2503 has a CVSS 3.1 base score of 7.4 (High). CVSS vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N. EPSS exploitation probability: 0.6%.

Java CVE-2018-2503

HIGH

Missing Authorization (CWE-862)

2018-12-11 cna@sap.com

Authentication Bypass Java SAP Netweaver Application Server Java

7.4

CVSS 3.1 · NVD

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Vulnerability Assessment

Weakness	CWE CWE-862 OWASP Top 10:2025 A01:2025 - Broken Access Control ASVS 5.0 V8 - Authorization Authorization checks on every request MITRE ATT&CK 1 technique across 1 tactic: Privilege Escalation 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 7.4 (HIGH). Attack characteristics: adjacent network attack vector, low complexity, no privileges required, no user interaction not required.
Exploit ScenarioDerived	An attacker could exploit this vulnerability to access resources or perform actions without proper authorization checks. No authentication is required to exploit this vulnerability.

This Week Schedule remediation this week. Why: HIGH severity (CVSS 7.0-8.9).

No patch listed yet 0.6% exploitation probability (EPSS)

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AnalysisAI

By default, the SAP NetWeaver AS Java keystore service does not sufficiently restrict the access to resources that should be protected. Rated high severity (CVSS 7.4), this vulnerability is no authentication required, low attack complexity. No vendor patch available.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Implement role-based access control, validate authorization on every request server-side, apply principle of least privilege.

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 Missing Authorization (CWE-862), which allows attackers to access resources or perform actions without proper authorization checks. By default, the SAP NetWeaver AS Java keystore service does not sufficiently restrict the access to resources that should be protected. This has been fixed in SAP NetWeaver AS Java (ServerCore versions 7.11, 7.20, 7.30, 7.31, 7.40, 7.50). Affected products include: Sap Netweaver Application Server Java.

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Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

NVD PRIMARY 7.4 HIGH

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

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector

Adjacent

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Changed

Confidentiality

High

Integrity

None

Availability

None

DescriptionNVD

By default, the SAP NetWeaver AS Java keystore service does not sufficiently restrict the access to resources that should be protected. This has been fixed in SAP NetWeaver AS Java (ServerCore versions 7.11, 7.20, 7.30, 7.31, 7.40, 7.50).

Threat Intelligence Overview

EPSS Score

0.6%

Top 58% exploitable

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 No

EPSS 0.6%

Patch available No

Active threat No

Deciding rule

HIGH severity (CVSS 7.0-8.9)

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

None

System Exposure· derived

Controlled

Automatable· derived

Human Impact· derived

Medium

Priority Score

Low Medium High Critical

KEV: 0

EPSS: +1

CVSS: +37

PoC: 0

Weaponized: 0

Threat intel: 0

Gov advisory: 0

Attack Technique

Authentication Bypass CRITICAL

Authentication bypass attacks exploit flaws in the verification mechanisms that control access to systems and applications.

Affected Products (CPE)NVD

cpe:2.3:a:sap:netweaver_application_server_java:7.11:*:*:*:*:*:*:*

cpe:2.3:a:sap:netweaver_application_server_java:7.20:*:*:*:*:*:*:*

cpe:2.3:a:sap:netweaver_application_server_java:7.30:*:*:*:*:*:*:*

cpe:2.3:a:sap:netweaver_application_server_java:7.31:*:*:*:*:*:*:*

cpe:2.3:a:sap:netweaver_application_server_java:7.40:*:*:*:*:*:*:*

cpe:2.3:a:sap:netweaver_application_server_java:7.50:*:*:*:*:*:*:*

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References

Advisories & patches

ADVISORY https://wiki.scn.sap.com/wiki/pages/viewpage.action?pageId=508559699 REF http://www.securityfocus.com/bid/106156 REF https://launchpad.support.sap.com/#/notes/2658279

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