Cisco SD-WAN Solution Certificate Validation Vulnerability
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- High
- Impact type
- Spoofing
- Confidentiality · integrity · availability
- High · High · None
- Fix status
- No fix listed
Attack profile from CVSS 3.0 · NVD. Fix status from CNA. Impact type from CWE-295.
Summary
A vulnerability in the Zero Touch Provisioning feature of the Cisco SD-WAN Solution could allow an unauthenticated, remote attacker to gain unauthorized access to sensitive data by using an invalid certificate. The vulnerability is due to insufficient certificate validation by the affected software. An attacker could exploit this vulnerability by supplying a crafted certificate to an affected device. A successful exploit could allow the attacker to conduct man-in-the-middle attacks to decrypt confidential information on user connections to the affected software.
Why it matters now
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 SD-WAN Solution | all versions | — | No fix listed | CNA |
- Cisco SD-WAN Solution VendorCisco Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 9
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:cisco:vedge_100_firmware:*:*:*:*:*:*:*:* | before 18.3.0 | Vulnerable | Cisco |
| cpe:2.3:h:cisco:vedge_100:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Cisco |
| cpe:2.3:o:cisco:vedge_1000_firmware:*:*:*:*:*:*:*:* | before 18.3.0 | Vulnerable | Cisco |
| cpe:2.3:h:cisco:vedge_1000:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Cisco |
| cpe:2.3:o:cisco:vedge_2000_firmware:*:*:*:*:*:*:*:* | before 18.3.0 | Vulnerable | Cisco |
| cpe:2.3:h:cisco:vedge_2000:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Cisco |
| cpe:2.3:o:cisco:vedge_5000_firmware:*:*:*:*:*:*:*:* | before 18.3.0 | Vulnerable | Cisco |
| cpe:2.3:h:cisco:vedge_5000:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Cisco |
| cpe:2.3:a:cisco:vmanage_network_management_system:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | Cisco |
- cpe:2.3:o:cisco:vedge_100_firmware:*:*:*:*:*:*:*:* Versions before 18.3.0 Vulnerable ·Cisco
- cpe:2.3:h:cisco:vedge_100:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
- cpe:2.3:o:cisco:vedge_1000_firmware:*:*:*:*:*:*:*:* Versions before 18.3.0 Vulnerable ·Cisco
- cpe:2.3:h:cisco:vedge_1000:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
- cpe:2.3:o:cisco:vedge_2000_firmware:*:*:*:*:*:*:*:* Versions before 18.3.0 Vulnerable ·Cisco
- cpe:2.3:h:cisco:vedge_2000:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
- cpe:2.3:o:cisco:vedge_5000_firmware:*:*:*:*:*:*:*:* Versions before 18.3.0 Vulnerable ·Cisco
- cpe:2.3:h:cisco:vedge_5000:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
- cpe:2.3:a:cisco:vmanage_network_management_system:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Cisco
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2018-0434
- 2026-10-03 Alias added: GHSA-6qq2-f6xc-778x
References
More Cisco Vedge 1000 Firmware vulnerabilities
- TI-2019-01276 Cisco SD-WAN Solution Arbitrary File Overwrite Vulnerability CVSS 3.1HIGH 8.8
- TI-2018-00391 Cisco SD-WAN Solution Privilege Escalation Vulnerability CVSS 3.0HIGH 8.8
- TI-2021-01240 Cisco SD-WAN Software vDaemon Denial of Service Vulnerability CVSS 3.1HIGH 7.5
- TI-2021-01238 Cisco SD-WAN vEdge Software Buffer Overflow Vulnerabilities CVSS 3.1HIGH 7.5
- TI-2021-01237 Cisco SD-WAN vEdge Software Buffer Overflow Vulnerabilities CVSS 3.1HIGH 7.5
- TI-2021-01236 Cisco SD-WAN vEdge Software Buffer Overflow Vulnerabilities CVSS 3.1HIGH 7.5
Sources
- CVE-2018-0434 · CVE Program
- CVE-2018-0434 · NVD
- FIRST EPSS
- GHSA-6qq2-f6xc-778x · 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