Is CVE-2013-4877 being actively exploited?

CVE-2013-4877 is not currently listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

What is the CVSS score for CVE-2013-4877?

CVE-2013-4877 has a CVSS 2.0 base score of 2.6 (LOW).

CVE-2013-4877

LOW · CVSS 2.6EPSS 0.8%EU EUVD

The Verizon Wireless Network Extender SCS-26UC4 and SCS-2U01 does not use CAVE authentication, which makes it easier for remote attackers to obtain ESN and MIN values from arbitrary phones, and conduct cloning attacks, by sniffing the network for registration packets.

Key facts

CVSS score: 2.6 (v2.0)
Severity: LOW
CVSS vector: AV:L/AC:H/Au:N/C:P/I:P/A:N
Weakness (CWE): CWE-287
EPSS score: 0.8% (56th percentile)
In CISA KEV: No
In EU EUVD: Yes (EUVD-2013-4722)
Published: July 18, 2013
NVD last modified: June 16, 2026
Status: Modified

EU Vulnerability Database (EUVD)

This vulnerability is also tracked by ENISA as EUVD-2013-4722 in the EU Vulnerability Database. Last updated in EUVD on August 6, 2024.

View on the EU Vulnerability Database

Affected products

verizon / wireless network extender
verizon / wireless network extender

References

http://www.kb.cert.org/vuls/id/458007(US Government Resource)
http://www.kb.cert.org/vuls/id/BLUU-997M5B(US Government Resource)
http://www.securityfocus.com/bid/61169

Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS

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