Cisco Small Business RV Series Routers Link Layer Discovery Protocol Vulnerabilities
Priority LOW 33CWE-119Published · Updated
Key facts
- Attack vector
- Adjacent network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-119 and the CVSS impact.
Summary
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).
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.0045 39th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Cisco | Cisco Small Business RV Series Router Firmware | all versions | — | No fix listed | CNA |
- Cisco Small Business RV Series Router Firmware VendorCisco Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 33
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:cisco:rv132w_firmware:1.0.1.14:*:*:*:*:*:*:* | 1.0.1.14 | Vulnerable | Cisco |
| cpe:2.3:o:cisco:rv132w_firmware:1.0.3.20:*:*:*:*:*:*:* | 1.0.3.20 | Vulnerable | Cisco |
| cpe:2.3:h:cisco:rv132w:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Cisco |
| cpe:2.3:o:cisco:rv134w_firmware:1.0.1.14:*:*:*:*:*:*:* | 1.0.1.14 | Vulnerable | Cisco |
| cpe:2.3:o:cisco:rv134w_firmware:1.0.3.20:*:*:*:*:*:*:* | 1.0.3.20 | Vulnerable | Cisco |
| cpe:2.3:h:cisco:rv134w:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Cisco |
| cpe:2.3:o:cisco:rv160_firmware:1.0.1.14:*:*:*:*:*:*:* | 1.0.1.14 | Vulnerable | Cisco |
| cpe:2.3:o:cisco:rv160_firmware:1.0.3.20:*:*:*:*:*:*:* | 1.0.3.20 | Vulnerable | Cisco |
| cpe:2.3:h:cisco:rv160:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Cisco |
| cpe:2.3:o:cisco:rv160w_firmware:1.0.1.14:*:*:*:*:*:*:* | 1.0.1.14 | Vulnerable | Cisco |
- cpe:2.3:o:cisco:rv132w_firmware:1.0.1.14:*:*:*:*:*:*:* Versions 1.0.1.14 Vulnerable ·Cisco
- cpe:2.3:o:cisco:rv132w_firmware:1.0.3.20:*:*:*:*:*:*:* Versions 1.0.3.20 Vulnerable ·Cisco
- cpe:2.3:h:cisco:rv132w:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
- cpe:2.3:o:cisco:rv134w_firmware:1.0.1.14:*:*:*:*:*:*:* Versions 1.0.1.14 Vulnerable ·Cisco
- cpe:2.3:o:cisco:rv134w_firmware:1.0.3.20:*:*:*:*:*:*:* Versions 1.0.3.20 Vulnerable ·Cisco
- cpe:2.3:h:cisco:rv134w:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
- cpe:2.3:o:cisco:rv160_firmware:1.0.1.14:*:*:*:*:*:*:* Versions 1.0.1.14 Vulnerable ·Cisco
- cpe:2.3:o:cisco:rv160_firmware:1.0.3.20:*:*:*:*:*:*:* Versions 1.0.3.20 Vulnerable ·Cisco
- cpe:2.3:h:cisco:rv160:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
- cpe:2.3:o:cisco:rv160w_firmware:1.0.1.14:*:*:*:*:*:*:* Versions 1.0.1.14 Vulnerable ·Cisco
Show 23 more CPE
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:cisco:rv160w_firmware:1.0.3.20:*:*:*:*:*:*:* | 1.0.3.20 | Vulnerable | Cisco |
| cpe:2.3:h:cisco:rv160w:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Cisco |
| cpe:2.3:o:cisco:rv260_firmware:1.0.1.14:*:*:*:*:*:*:* | 1.0.1.14 | Vulnerable | Cisco |
| cpe:2.3:o:cisco:rv260_firmware:1.0.3.20:*:*:*:*:*:*:* | 1.0.3.20 | Vulnerable | Cisco |
| cpe:2.3:h:cisco:rv260:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Cisco |
| cpe:2.3:o:cisco:rv260p_firmware:1.0.1.14:*:*:*:*:*:*:* | 1.0.1.14 | Vulnerable | Cisco |
| cpe:2.3:o:cisco:rv260p_firmware:1.0.3.20:*:*:*:*:*:*:* | 1.0.3.20 | Vulnerable | Cisco |
| cpe:2.3:h:cisco:rv260p:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Cisco |
| cpe:2.3:o:cisco:rv260w_firmware:1.0.1.14:*:*:*:*:*:*:* | 1.0.1.14 | Vulnerable | Cisco |
| cpe:2.3:o:cisco:rv260w_firmware:1.0.3.20:*:*:*:*:*:*:* | 1.0.3.20 | Vulnerable | Cisco |
| cpe:2.3:h:cisco:rv260w:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Cisco |
| cpe:2.3:o:cisco:rv340_firmware:1.0.1.14:*:*:*:*:*:*:* | 1.0.1.14 | Vulnerable | Cisco |
| cpe:2.3:o:cisco:rv340_firmware:1.0.3.20:*:*:*:*:*:*:* | 1.0.3.20 | Vulnerable | Cisco |
| cpe:2.3:h:cisco:rv340:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Cisco |
| cpe:2.3:o:cisco:rv340w_firmware:1.0.1.14:*:*:*:*:*:*:* | 1.0.1.14 | Vulnerable | Cisco |
| cpe:2.3:o:cisco:rv340w_firmware:1.0.3.20:*:*:*:*:*:*:* | 1.0.3.20 | Vulnerable | Cisco |
| cpe:2.3:h:cisco:rv340w:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Cisco |
| cpe:2.3:o:cisco:rv345_firmware:1.0.1.14:*:*:*:*:*:*:* | 1.0.1.14 | Vulnerable | Cisco |
| cpe:2.3:o:cisco:rv345_firmware:1.0.3.20:*:*:*:*:*:*:* | 1.0.3.20 | Vulnerable | Cisco |
| cpe:2.3:h:cisco:rv345:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Cisco |
| cpe:2.3:o:cisco:rv345p_firmware:1.0.1.14:*:*:*:*:*:*:* | 1.0.1.14 | Vulnerable | Cisco |
| cpe:2.3:o:cisco:rv345p_firmware:1.0.3.20:*:*:*:*:*:*:* | 1.0.3.20 | Vulnerable | Cisco |
| cpe:2.3:h:cisco:rv345p:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Cisco |
- cpe:2.3:o:cisco:rv160w_firmware:1.0.3.20:*:*:*:*:*:*:* Versions 1.0.3.20 Vulnerable ·Cisco
- cpe:2.3:h:cisco:rv160w:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
- cpe:2.3:o:cisco:rv260_firmware:1.0.1.14:*:*:*:*:*:*:* Versions 1.0.1.14 Vulnerable ·Cisco
- cpe:2.3:o:cisco:rv260_firmware:1.0.3.20:*:*:*:*:*:*:* Versions 1.0.3.20 Vulnerable ·Cisco
- cpe:2.3:h:cisco:rv260:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
- cpe:2.3:o:cisco:rv260p_firmware:1.0.1.14:*:*:*:*:*:*:* Versions 1.0.1.14 Vulnerable ·Cisco
- cpe:2.3:o:cisco:rv260p_firmware:1.0.3.20:*:*:*:*:*:*:* Versions 1.0.3.20 Vulnerable ·Cisco
- cpe:2.3:h:cisco:rv260p:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
- cpe:2.3:o:cisco:rv260w_firmware:1.0.1.14:*:*:*:*:*:*:* Versions 1.0.1.14 Vulnerable ·Cisco
- cpe:2.3:o:cisco:rv260w_firmware:1.0.3.20:*:*:*:*:*:*:* Versions 1.0.3.20 Vulnerable ·Cisco
- cpe:2.3:h:cisco:rv260w:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
- cpe:2.3:o:cisco:rv340_firmware:1.0.1.14:*:*:*:*:*:*:* Versions 1.0.1.14 Vulnerable ·Cisco
- cpe:2.3:o:cisco:rv340_firmware:1.0.3.20:*:*:*:*:*:*:* Versions 1.0.3.20 Vulnerable ·Cisco
- cpe:2.3:h:cisco:rv340:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
- cpe:2.3:o:cisco:rv340w_firmware:1.0.1.14:*:*:*:*:*:*:* Versions 1.0.1.14 Vulnerable ·Cisco
- cpe:2.3:o:cisco:rv340w_firmware:1.0.3.20:*:*:*:*:*:*:* Versions 1.0.3.20 Vulnerable ·Cisco
- cpe:2.3:h:cisco:rv340w:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
- cpe:2.3:o:cisco:rv345_firmware:1.0.1.14:*:*:*:*:*:*:* Versions 1.0.1.14 Vulnerable ·Cisco
- cpe:2.3:o:cisco:rv345_firmware:1.0.3.20:*:*:*:*:*:*:* Versions 1.0.3.20 Vulnerable ·Cisco
- cpe:2.3:h:cisco:rv345:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
- cpe:2.3:o:cisco:rv345p_firmware:1.0.1.14:*:*:*:*:*:*:* Versions 1.0.1.14 Vulnerable ·Cisco
- cpe:2.3:o:cisco:rv345p_firmware:1.0.3.20:*:*:*:*:*:*:* Versions 1.0.3.20 Vulnerable ·Cisco
- cpe:2.3:h:cisco:rv345p:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
Remediation
No fixed version listed by the sources yet.
Fixed in the same release
Records fixed by the same vendor advisory or release, as the CNA lists them.
- Advisory ·
Cisco Small Business RV Series Router Firmware — 20210407 Cisco Small Business RV Series Routers Link Layer Discovery Protocol Vulnerabilities
3 records Highest priority Priority LOW 3 LOW
Other records, highest priority first
- TI-2021-01036 Cisco Small Business RV Series Routers Link Layer Discovery Protocol VulnerabilitiesPriority LOW 39
- TI-2021-01035 Cisco Small Business RV Series Routers Link Layer Discovery Protocol VulnerabilitiesPriority LOW 33
Timeline
- 2026-10-02 Threatist record created from CVE-2021-1251
- 2026-10-03 Alias added: GHSA-8jq9-v6q2-frcj
References
More Cisco Rv132w Firmware vulnerabilities
- TI-2018-00100 Improper input validation in Cisco RV132W and RV134W KEVCVSS 3.1CRITICAL 9.8
- TI-2018-00101 Information disclosure in Cisco RV132W and RV134W Wireless VPN Routers CVSS 3.1CRITICAL 9.8
- TI-2021-01036 Cisco Small Business RV Series Routers Link Layer Discovery Protocol Vulnerabilities CVSS 3.1HIGH 8.8
- TI-2021-01014 Stack-based buffer overflow in Cisco Small Business RV Series Router Firmware CVSS 3.1HIGH 7.2
- TI-2021-01035 Cisco Small Business RV Series Routers Link Layer Discovery Protocol Vulnerabilities CVSS 3.1HIGH 7.4
Sources
- CVE-2021-1251 · CVE Program
- CVE-2021-1251 · NVD
- FIRST EPSS
- GHSA-8jq9-v6q2-frcj · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences