Buffer overflow in Cisco Small Business RV Series Router Firmware
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-120 and the CVSS impact.
Summary
A vulnerability in the web-based management interface of Cisco Small Business RV340, RV340W, RV345, and RV345P Dual WAN Gigabit VPN Routers could allow an authenticated, remote attacker to execute arbitrary code or cause the web-based management process on the device to restart unexpectedly, resulting in a denial of service (DoS) condition. The attacker must have valid administrator credentials. This vulnerability is due to insufficient validation of user-supplied input to the web-based management interface. An attacker could exploit this vulnerability by sending crafted HTTP input to an affected device. A successful exploit could allow the attacker to execute arbitrary code as the root user on the underlying operating system or cause the web-based management process to restart, resulting in a DoS condition.
Why it matters now
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 | — | 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 Fixed in — No fix listed CNA
CPE configurations NVD · 8
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:cisco:rv340_firmware:*:*:*:*:*:*:*:* | before 1.0.03.29 | Vulnerable | Cisco |
| cpe:2.3:h:cisco:rv340:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Cisco |
| cpe:2.3:o:cisco:rv340w_firmware:*:*:*:*:*:*:*:* | before 1.0.03.29 | Vulnerable | Cisco |
| cpe:2.3:h:cisco:rv340w:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Cisco |
| cpe:2.3:o:cisco:rv345_firmware:*:*:*:*:*:*:*:* | before 1.0.03.29 | Vulnerable | Cisco |
| cpe:2.3:h:cisco:rv345:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Cisco |
| cpe:2.3:o:cisco:rv345p_firmware:*:*:*:*:*:*:*:* | before 1.0.03.29 | Vulnerable | Cisco |
| cpe:2.3:h:cisco:rv345p:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Cisco |
- cpe:2.3:o:cisco:rv340_firmware:*:*:*:*:*:*:*:* Versions before 1.0.03.29 Vulnerable ·Cisco
- cpe:2.3:h:cisco:rv340:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
- cpe:2.3:o:cisco:rv340w_firmware:*:*:*:*:*:*:*:* Versions before 1.0.03.29 Vulnerable ·Cisco
- cpe:2.3:h:cisco:rv340w:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
- cpe:2.3:o:cisco:rv345_firmware:*:*:*:*:*:*:*:* Versions before 1.0.03.29 Vulnerable ·Cisco
- cpe:2.3:h:cisco:rv345:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
- cpe:2.3:o:cisco:rv345p_firmware:*:*:*:*:*:*:*:* Versions before 1.0.03.29 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.
Timeline
- 2026-10-02 Threatist record created from CVE-2023-20007
- 2026-10-03 Alias added: GHSA-j77g-rccp-fpvv
References
Advisory 1
More Cisco Rv340 Firmware vulnerabilities
- TI-2025-23504 Erlang/OTP SSH Vulnerable to Pre-Authentication RCE KEVCVSS 3.1CRITICAL 10.0
- TI-2022-05267 Cisco Small Business RV Series Routers Vulnerabilities KEVCVSS 3.1CRITICAL 10.0
- TI-2022-05262 Cisco Small Business RV Series Routers Vulnerabilities KEVCVSS 3.1CRITICAL 10.0
- TI-2022-05260 Cisco Small Business RV Series Routers Vulnerabilities KEVCVSS 3.1CRITICAL 10.0
- TI-2022-05259 Cisco Small Business RV Series Routers Vulnerabilities KEVCVSS 3.1CRITICAL 10.0
- TI-2022-05258 Cisco Small Business RV Series Routers Vulnerabilities KEVCVSS 3.1CRITICAL 10.0
Sources
- CVE-2023-20007 · CVE Program
- CVE-2023-20007 · NVD
- FIRST EPSS
- GHSA-j77g-rccp-fpvv · 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