Command injection in Cisco Small Business RV Series Router Firmware
Priority LOW 34CWE-77Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- High
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-77.
Summary
A vulnerability in the web-based management interface of Cisco Small Business RV016, RV042, RV042G, RV082, RV320 and RV325 Routers could allow an authenticated, remote attacker to execute arbitrary commands on an affected device. This vulnerability is due to improper validation of user input within incoming HTTP packets. An attacker could exploit this vulnerability by sending a crafted HTTP request to the web-based management interface. A successful exploit could allow the attacker to gain root-level privileges and access unauthorized data. To exploit this vulnerability, an attacker would need to have valid administrative credentials on the affected device.
Why it matters now
EPSS 0.01299 70th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Cisco | Cisco Small Business RV Series Router Firmware | 1.0.00.29; 1.0.00.33; 1.0.01.16; 1.0.01.17; 1.0.01.18; 1.0.01.20; 1.0.02.16; 1.0.03.15; 1.0.03.16; 1.0.03.17; 1.0.03.18; 1.0.03.19; 1.0.03.20; 1.0.03.21; 1.0.03.22; 1.0.03.24; 1.0.03.26; 1.0.03.27; 1.0.03.28; 1.0.03.29; 2.0.0.19-tm; 2.0.2.01-tm; 1.3.12.19-tm; 1.3.12.6-tm; 1.3.13.02-tm; 1.3.9.8-tm; 4.0.0.7; 4.0.2.08-tm; 4.0.3.03-tm; 4.0.4.02-tm; 4.2.1.02; 4.2.2.08; 4.2.3.03; 4.2.3.06; 4.2.3.07; 4.2.3.08; 4.2.3.09; 4.2.3.10; 4.2.3.14; 3.0.0.1-tm; 3.0.0.19-tm; 3.0.2.01-tm; 4.1.1.01; 4.1.0.02-tm | — | No fix listed | CNA |
- Cisco Small Business RV Series Router Firmware VendorCisco Affected 1.0.00.29; 1.0.00.33; 1.0.01.16; 1.0.01.17; 1.0.01.18; 1.0.01.20; 1.0.02.16; 1.0.03.15; 1.0.03.16; 1.0.03.17; 1.0.03.18; 1.0.03.19; 1.0.03.20; 1.0.03.21; 1.0.03.22; 1.0.03.24; 1.0.03.26; 1.0.03.27; 1.0.03.28; 1.0.03.29; 2.0.0.19-tm; 2.0.2.01-tm; 1.3.12.19-tm; 1.3.12.6-tm; 1.3.13.02-tm; 1.3.9.8-tm; 4.0.0.7; 4.0.2.08-tm; 4.0.3.03-tm; 4.0.4.02-tm; 4.2.1.02; 4.2.2.08; 4.2.3.03; 4.2.3.06; 4.2.3.07; 4.2.3.08; 4.2.3.09; 4.2.3.10; 4.2.3.14; 3.0.0.1-tm; 3.0.0.19-tm; 3.0.2.01-tm; 4.1.1.01; 4.1.0.02-tm Fixed in — No fix listed CNA
CPE configurations NVD · 8
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:cisco:rv016_firmware:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | Cisco |
| cpe:2.3:h:cisco:rv016:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Cisco |
| cpe:2.3:o:cisco:rv042_firmware:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | Cisco |
| cpe:2.3:h:cisco:rv042:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Cisco |
| cpe:2.3:o:cisco:rv042g_firmware:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | Cisco |
| cpe:2.3:h:cisco:rv042g:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Cisco |
| cpe:2.3:o:cisco:rv082_firmware:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | Cisco |
| cpe:2.3:h:cisco:rv082:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Cisco |
- cpe:2.3:o:cisco:rv016_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Cisco
- cpe:2.3:h:cisco:rv016:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
- cpe:2.3:o:cisco:rv042_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Cisco
- cpe:2.3:h:cisco:rv042:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
- cpe:2.3:o:cisco:rv042g_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Cisco
- cpe:2.3:h:cisco:rv042g:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
- cpe:2.3:o:cisco:rv082_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Cisco
- cpe:2.3:h:cisco:rv082:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2023-20026
- 2026-10-03 Alias added: GHSA-f3r5-v4wr-72qr
References
Advisory 1
More Cisco Rv016 Firmware vulnerabilities
- TI-2023-06825 Command injection in Cisco Small Business RV Series Router Firmware KEVCVSS 3.1HIGH 7.2
- TI-2023-06734 Authentication bypass by spoofing in Cisco Small Business RV Series Router Firmware CVSS 3.1CRITICAL 9.8
- TI-2020-02854 Cisco Small Business RV Series Routers Stack Overflow Arbitrary Code Execution Vulnerabilities CVSS 3.1HIGH 7.2
- TI-2020-02853 Cisco Small Business RV Series Routers Stack Overflow Arbitrary Code Execution Vulnerabilities CVSS 3.1HIGH 7.2
- TI-2020-02852 Cisco Small Business RV Series Routers Stack Overflow Arbitrary Code Execution Vulnerabilities CVSS 3.1HIGH 7.2
- TI-2020-02851 Cisco Small Business RV Series Routers Stack Overflow Arbitrary Code Execution Vulnerabilities CVSS 3.1HIGH 7.2
Sources
- CVE-2023-20026 · CVE Program
- CVE-2023-20026 · NVD
- FIRST EPSS
- GHSA-f3r5-v4wr-72qr · 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