Authentication bypass by spoofing in Cisco Small Business RV Series Router Firmware
Priority MEDIUM 46CWE-293Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Security bypass
- 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-290.
Summary
A vulnerability in the web-based management interface of Cisco Small Business RV016, RV042, RV042G, and RV082 Routers could allow an unauthenticated, remote attacker to bypass authentication 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 bypass authentication and gain root access on the underlying operating system.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.01635 76th 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
- Total
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 | 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 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-2023-20025
- 2026-10-03 Alias added: GHSA-q4cw-h889-p6jj
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-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
- TI-2020-02850 Cisco Small Business RV Series Routers Stack Overflow Arbitrary Code Execution Vulnerabilities CVSS 3.1HIGH 7.2
Sources
- CVE-2023-20025 · CVE Program
- CVE-2023-20025 · NVD
- FIRST EPSS
- GHSA-q4cw-h889-p6jj · 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