CVE-2021-1251
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).
Risk Information
Base Score
7.4
MODERATE
Vector
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
EPSS Score
Exploitation Probability
0.096
Associated Vulnerability
| Vulnerability | OS Platform |
|---|---|
| Cisco Small Business RV Series Routers Link Layer Discovery Protocol Vulnerabilities For Cisco Small Business RV Series Routers | NCM |
| Cisco Small Business RV Series Routers Link Layer Discovery Protocol Vulnerabilities For Cisco Application Extension Platform | NCM |
| Missing Release of Memory after Effective Lifetime Vulnerability (CVE-2021-1251) | NCM |
Patch Details
Click to see the patches provided by ManageEngine for this CVE
| Patch ID | Patch Description |
|---|---|
| PATCH-1705925 | Security Update for Cisco Small Business RV Series Routers 1.0.3.16 |
| PATCH-1705914 | Security Update for Cisco Application Extension Platform 1.0.3.16 |
References
https://nvd.nist.gov/vuln/detail/CVE-2023-1234
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-1234