CVE-2015-4863

Unspecified vulnerability in the Portable Clusterware component in Oracle Database Server 11.2.0.4, 12.1.0.1, and 12.1.0.2 allows remote attackers to affect confidentiality, integrity, and availability via unknown vectors.

Published: 2015-10-21 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2015-4863 is rated High Risk (70.7/100): CVSS Critical severity, with medium exploitation likelihood (EPSS 3.09%). High exploitation likelihood—assess exposure and prioritize remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2015-4863

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 2.47% 3.09% +0.62%
2 2025-06-23 2.38% 2.47% +0.09%
3 2025-03-30 — 2.38% —

Full EPSS history (8 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2015-4863

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
10.0 2.0 HIGH
AV:N/AC:L/Au:N/C:C/I:C/A:C Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:C)
Complete confidentiality impact.
Integrity impact (I:C)
Complete integrity impact.
Availability impact (A:C)
Complete availability impact.
 10.0 10.0 [email protected]

Weakness enumeration for CVE-2015-4863

Affected software / configurations for CVE-2015-4863

Vendor Product Version Raw CPE
oracle database_server 11.2.0.4 cpe:2.3:a:oracle:database_server:11.2.0.4:*:*:*:*:*:*:*
oracle database_server 12.1.0.1 cpe:2.3:a:oracle:database_server:12.1.0.1:*:*:*:*:*:*:*
oracle database_server 12.1.0.2 cpe:2.3:a:oracle:database_server:12.1.0.2:*:*:*:*:*:*:*

References for CVE-2015-4863

cvelogic Threat Intelligence