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HIGH · 7.4

CVE-2021-1309

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...

Vulnerability 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 Score

7.4

HIGH

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
Attack Vector
ADJACENT_NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH

Affected Products

VendorProductVersions
CiscoRv132W Firmware1.0.0.14
CiscoRv132W-
CiscoRv134W Firmware1.0.0.14
CiscoRv134W-
CiscoRv160 Firmware1.0.0.14
CiscoRv160-
CiscoRv160W Firmware1.0.0.14
CiscoRv160W-
CiscoRv260 Firmware1.0.0.14
CiscoRv260-
CiscoRv260P Firmware1.0.0.14
CiscoRv260P-
CiscoRv260W Firmware1.0.0.14
CiscoRv260W-
CiscoRv340 Firmware1.0.0.14
CiscoRv340-
CiscoRv340W Firmware1.0.0.14
CiscoRv340W-
CiscoRv345 Firmware1.0.0.14
CiscoRv345-

Related Weaknesses (CWE)

CWE-119CWE-401

References

FAQ

What is CVE-2021-1309?

CVE-2021-1309 is a vulnerability with a CVSS score of 7.4 (HIGH). 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...

How severe is CVE-2021-1309?

CVE-2021-1309 has been rated HIGH with a CVSS base score of 7.4/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2021-1309?

Check the references section above for vendor advisories and patch information. Affected products include: Cisco Rv132W Firmware, Cisco Rv132W, Cisco Rv134W Firmware, Cisco Rv134W, Cisco Rv160 Firmware.