CVE-2013-4874

The Uboot bootloader on the Verizon Wireless Network Extender SCS-26UC4 allows physically proximate attackers to obtain root access by connecting a crafted HDMI cable and using a sys session to modify the ramboot environment variable.

Published: 2013-07-18 Last update: 2026-04-29 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2013-4874 is rated Moderate Risk (41.5/100): CVSS Medium severity, with low exploitation likelihood (EPSS 0.68%). 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-2013-4874

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 0.58% 0.68% +0.10%
2 2025-09-24 0.13% 0.58% +0.45%
3 2023-03-07 — 0.13% —

Full EPSS history (4 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2013-4874

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
6.2 2.0 MEDIUM
AV:L/AC:H/Au:N/C:C/I:C/A:C Click to expand
Access vector (AV:L)
Requires local access to the target system.
Access complexity (AC:H)
Exploitation requires uncommon or highly specific conditions.
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.
 1.9 10.0 [email protected]

Weakness enumeration for CVE-2013-4874

Affected software / configurations for CVE-2013-4874

Vendor Product Version Raw CPE
verizon wireless_network_extender scs-26uc4 cpe:2.3:h:verizon:wireless_network_extender:scs-26uc4:*:*:*:*:*:*:*

References for CVE-2013-4874

cvelogic Threat Intelligence