The random-number generator on Cisco Small Business RV routers 4.x and SA500 security…
Priority LOW 24CWE-200Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- — Not recorded in CVSS 2.0
- Attack complexity
- Medium
- Impact type
- Information disclosure
- Confidentiality · integrity · availability
- Partial · None · None
- Fix status
- No fix listed
Attack profile from CVSS 2.0 · NVD. Fix status from CNA. Impact type from CWE-200.
Summary
The random-number generator on Cisco Small Business RV routers 4.x and SA500 security appliances 2.2.07 does not have sufficient entropy, which makes it easier for remote attackers to determine a TLS key pair via unspecified computations upon handshake key-exchange data, aka Bug ID CSCus15224.
Why it matters now
EPSS 0.01836 79th 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 |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 12
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:cisco:sa520:2.2.07:*:*:*:*:*:*:* | 2.2.07 | Vulnerable | Cisco |
| cpe:2.3:o:cisco:sa520w:2.2.07:*:*:*:*:*:*:* | 2.2.07 | Vulnerable | Cisco |
| cpe:2.3:o:cisco:sa540:2.2.07:*:*:*:*:*:*:* | 2.2.07 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:rv016_multi-wan_vpn_firmware:4.0.0.7:*:*:*:*:*:*:* | 4.0.0.7 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:rv016_multi-wan_vpn_firmware:4.0.2.8:*:*:*:*:*:*:* | 4.0.2.8 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:rv016_multi-wan_vpn_firmware:4.0.5.0:*:*:*:*:*:*:* | 4.0.5.0 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:rv042_dual_wan_vpn_router_firmware:4.0.2.8:*:*:*:*:*:*:* | 4.0.2.8 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:rv042g_dual_gigabit_wan_vpn_firmware:4.0.0.7:*:*:*:*:*:*:* | 4.0.0.7 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:rv042g_dual_gigabit_wan_vpn_firmware:4.2.2.7:*:*:*:*:*:*:* | 4.2.2.7 | Vulnerable | Cisco |
| cpe:2.3:a:cisco:rv042g_dual_gigabit_wan_vpn_firmware:4.2.2.8:*:*:*:*:*:*:* | 4.2.2.8 | Vulnerable | Cisco |
- cpe:2.3:o:cisco:sa520:2.2.07:*:*:*:*:*:*:* Versions 2.2.07 Vulnerable ·Cisco
- cpe:2.3:o:cisco:sa520w:2.2.07:*:*:*:*:*:*:* Versions 2.2.07 Vulnerable ·Cisco
- cpe:2.3:o:cisco:sa540:2.2.07:*:*:*:*:*:*:* Versions 2.2.07 Vulnerable ·Cisco
- cpe:2.3:a:cisco:rv016_multi-wan_vpn_firmware:4.0.0.7:*:*:*:*:*:*:* Versions 4.0.0.7 Vulnerable ·Cisco
- cpe:2.3:a:cisco:rv016_multi-wan_vpn_firmware:4.0.2.8:*:*:*:*:*:*:* Versions 4.0.2.8 Vulnerable ·Cisco
- cpe:2.3:a:cisco:rv016_multi-wan_vpn_firmware:4.0.5.0:*:*:*:*:*:*:* Versions 4.0.5.0 Vulnerable ·Cisco
- cpe:2.3:a:cisco:rv042_dual_wan_vpn_router_firmware:4.0.2.8:*:*:*:*:*:*:* Versions 4.0.2.8 Vulnerable ·Cisco
- cpe:2.3:a:cisco:rv042g_dual_gigabit_wan_vpn_firmware:4.0.0.7:*:*:*:*:*:*:* Versions 4.0.0.7 Vulnerable ·Cisco
- cpe:2.3:a:cisco:rv042g_dual_gigabit_wan_vpn_firmware:4.2.2.7:*:*:*:*:*:*:* Versions 4.2.2.7 Vulnerable ·Cisco
- cpe:2.3:a:cisco:rv042g_dual_gigabit_wan_vpn_firmware:4.2.2.8:*:*:*:*:*:*:* Versions 4.2.2.8 Vulnerable ·Cisco
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2015-6418
- 2026-10-03 Alias added: GHSA-9rcv-p8fh-p3ch
References
More Cisco Rv016 Multi-wan Vpn Firmware vulnerabilities
- TI-2019-11383 Cisco Small Business RV016, RV042, RV042G, and RV082 Routers Arbitrary Command Execution Vulnerability KEVCVSS 3.1HIGH 8.8
- TI-2019-12000 Cisco Small Business Routers RV016, RV042, RV042G, RV082, RV320, and RV325 Command Injection Vulnerability CVSS 3.1HIGH 7.2
- TI-2019-12030 Cisco Small Business Routers RV016, RV042, RV042G, and RV082 Information Disclosure Vulnerability CVSS 3.1MEDIUM 5.3
Sources
- CVE-2015-6418 · CVE Program
- CVE-2015-6418 · NVD
- FIRST EPSS
- GHSA-9rcv-p8fh-p3ch · GitHub Advisory Database · CC BY 4.0
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