CVE-2013-5143

The RADIUS service in Server App in Apple OS X Server before 3.0 selects a fallback X.509 certificate in unspecified circumstances, which might allow man-in-the-middle attackers to hijack RADIUS sessions by leveraging knowledge of the private key that matches this fallback certificate.

Published: 2013-10-24 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2013-5143 is rated Moderate Risk (42.2/100): CVSS Medium severity, with low exploitation likelihood (EPSS 0.55%). Review affected assets and schedule 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-2013-5143

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 0.19% 0.55% +0.37%
2 2025-03-17 0.11% 0.19% +0.08%
3 2023-03-07 — 0.11% —

Full EPSS history (4 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2013-5143

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
6.8 2.0 MEDIUM
AV:N/AC:M/Au:N/C:P/I:P/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:M)
Exploitation needs some favorable conditions, but not exceptional ones.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:P)
Partial availability impact.
 8.6 6.4 [email protected]

Weakness enumeration for CVE-2013-5143

Affected software / configurations for CVE-2013-5143

Vendor Product Version Raw CPE
apple os_x_server <= 2.2.2 cpe:2.3:o:apple:os_x_server:*:*:*:*:*:*:*:*
apple os_x_server 2.0 cpe:2.3:o:apple:os_x_server:2.0:*:*:*:*:*:*:*
apple os_x_server 2.1 cpe:2.3:o:apple:os_x_server:2.1:*:*:*:*:*:*:*
apple os_x_server 2.1.1 cpe:2.3:o:apple:os_x_server:2.1.1:*:*:*:*:*:*:*
apple os_x_server 2.2 cpe:2.3:o:apple:os_x_server:2.2:*:*:*:*:*:*:*
apple os_x_server 2.2.1 cpe:2.3:o:apple:os_x_server:2.2.1:*:*:*:*:*:*:*

References for CVE-2013-5143

cvelogic Threat Intelligence