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

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MEDIUM

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 Jul 18, 2013

6.2

MEDIUM

CVSS 2.0

EPSS 0.68%

Description

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.

Affected products

Remediation

No remediation recorded yet.

Metrics

0.68% 0.00683

Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.

EPSS probability 0.00683

Score over time

2022–2026

EPSS v2
EPSS v3
EPSS v4
EPSS v5

Percentile over time

EPSS v2
EPSS v3
EPSS v4
EPSS v5

Table of values (10 key points)

Flat stretches are collapsed; showing up to 120 newest points.

Date	Score	Percentile	Model
Oct 1, 2026	0.68% (0.00683)	50.75th	v5 (v2026.06.15)
Jun 15, 2026	0.68% (0.00683)	47.49th	v5 (v2026.06.15)
Mar 17, 2025	0.09% (0.00092)	23.97th	v4 (v2025.03.14)
Dec 12, 2024	0.13% (0.00127)	48.99th	v3 (v2023.03.01)
Jun 14, 2024	0.13% (0.00127)	47.59th	v3 (v2023.03.01)
Mar 7, 2023	0.13% (0.00127)	45.55th	v3 (v2023.03.01)
Mar 6, 2023	0.95% (0.00954)	36.37th	v2 (v2022.01.01)
Sep 2, 2022	0.95% (0.00954)	34.50th	v2 (v2022.01.01)
Apr 1, 2022	0.95% (0.00954)	32.50th	v2 (v2022.01.01)
Feb 4, 2022	0.95% (0.00954)	16.28th	v2 (v2022.01.01)

Weaknesses (1)

CWE-287

Improper Authentication

References (3)

http://www.kb.cert.org/vuls/id/458007
third-party-advisoryx_refsource_CERT-VNUS Government Resource
http://www.kb.cert.org/vuls/id/BLUU-997M5B
x_refsource_MISCUS Government Resource
http://www.securityfocus.com/bid/61169
vdb-entryx_refsource_BID

Link	Providers	Tags
http://www.kb.cert.org/vuls/id/458007		third-party-advisoryx_refsource_CERT-VNUS Government Resource
http://www.kb.cert.org/vuls/id/BLUU-997M5B		x_refsource_MISCUS Government Resource
http://www.securityfocus.com/bid/61169		vdb-entryx_refsource_BID

Change history (0)

No recorded changes yet.

Sources

CVE.org / MITRE

Status PUBLISHED

Assigner mitre

Published Jul 18, 2013

Updated Aug 6, 2024

Reserved Jul 18, 2013

Link CVE-2013-4874

CISA Vulnrichment

Updated n/a

NVD

Status Modified

Modified Jun 16, 2026

Link CVE-2013-4874

Red Hat

Severity n/a

Public date n/a

Links CVE-2013-4874