VulnerabilityModified

CVE-2021-1251

Multiple vulnerabilities exist in the Link Layer Discovery Protocol (LLDP) implementation for Cisco Small Business RV Series Routers.

HIGH 7.4EPSS 0.43%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (0.43%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

Description

Multiple vulnerabilities exist in the Link Layer Discovery Protocol (LLDP) implementation for Cisco Small Business RV Series Routers. An unauthenticated, adjacent attacker could execute arbitrary code or cause an affected router to leak system memory or reload. A memory leak or device reload would cause a denial of service (DoS) condition on an affected device. For more information about these vulnerabilities, see the Details section of this advisory. Note: LLDP is a Layer 2 protocol. To exploit these vulnerabilities, an attacker must be in the same broadcast domain as the affected device (Layer 2 adjacent).

CVSS 3.1: 7.4 HIGHCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
EPSS: 0.43% probability · 37th percentile
CISA KEV: Not listed
Weakness: CWE-119, CWE-401
Affected: cisco/rv132w firmware · cisco/rv134w firmware · cisco/rv160 firmware · cisco/rv160w firmware · cisco/rv260 firmware · cisco/rv260p firmware · cisco/rv260w firmware · cisco/rv340 firmware · cisco/rv340w firmware · cisco/rv345 firmware · cisco/rv345p firmware
Source: psirt@cisco.com

References

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.