How severe is CVE-2013-4877?

CVE-2013-4877 has a CVSS 2.0 base score of 2.6, rated low severity.

Is CVE-2013-4877 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (52nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2013-4877?

CVE-2013-4877 primarily affects Verizon Wireless Network Extender. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2013-4877?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2013-4877 published?

CVE-2013-4877 was published on 2013-07-18 and last updated on 2026-06-16.

CVE-2013-4877

CVE-2013-4877 is a low-severity vulnerability in Verizon Wireless Network Extender with a CVSS 2.0 base score of 2.6. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-287.

Key facts

Severity: Low (CVSS 2.0 base score 2.6)
EPSS exploit prediction: 1% (52nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-287
Affected product: Verizon Wireless Network Extender
Published: 2013-07-18
Last modified: 2026-06-16

Description

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.

Frequently asked questions

What is CVE-2013-4877?: 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.
How severe is CVE-2013-4877?: CVE-2013-4877 has a CVSS 2.0 base score of 2.6, rated low severity.
Is CVE-2013-4877 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (52nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2013-4877?: CVE-2013-4877 primarily affects Verizon Wireless Network Extender. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2013-4877?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2013-4877 published?: CVE-2013-4877 was published on 2013-07-18 and last updated on 2026-06-16.

References

Affected products (2)

cpe:2.3:h:verizon:wireless_network_extender:scs-2u01:*:*:*:*:*:*:*
cpe:2.3:h:verizon:wireless_network_extender:scs-26uc4:*:*:*:*:*:*:*

More vulnerabilities in Verizon Wireless Network Extender

CVE-2013-4876 — Medium (CVSS 6.2): The Verizon Wireless Network Extender SCS-2U01 has a hardcoded password for the root account, which makes it easier for…
CVE-2013-4875 — Medium (CVSS 6.2): The Uboot bootloader on the Verizon Wireless Network Extender SCS-2U01 allows physically proximate attackers to bypass…
CVE-2013-4874 — Medium (CVSS 6.2): The Uboot bootloader on the Verizon Wireless Network Extender SCS-26UC4 allows physically proximate attackers to obtain…

All CVEs affecting Verizon Wireless Network Extender →

Other CWE-287 (Improper Authentication) vulnerabilities

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CVE-2026-46389 — Critical (CVSS 10.0): UDS Identity Config builds the Keycloak configuration image (realm, plugins, theme, truststore, JARs) consumed by UDS…
CVE-2026-10611 — Critical (CVSS 10.0): An authentication bypass vulnerability exists in MISP when LDAP mixed authentication is enabled with OTP enforcement.…
CVE-2026-47280 — Critical (CVSS 10.0): Improper authentication in Azure Resource Manager (ARM) allows an unauthorized attacker to elevate privileges over a…
CVE-2026-42822 — Critical (CVSS 10.0): Improper authentication in Azure Local Disconnected Operations allows an unauthorized attacker to elevate privileges…
CVE-2026-20182 — Critical (CVSS 10.0): May 2026: This security advisory provides the details and fix information for a vulnerability that was discovered and…

Browse all CWE-287 (Improper Authentication) vulnerabilities →