Cisco SD-WAN vManage Software Authorization Bypass Vulnerability
Key facts
- Attack vector
- Network
- Privileges required
- Low
- 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-285.
Summary
A vulnerability in the web-based management interface of Cisco SD-WAN vManage Software could allow an authenticated, remote attacker to bypass authorization, enabling them to access sensitive information, modify the system configuration, or impact the availability of the affected system. The vulnerability is due to insufficient authorization checking on the affected system. An attacker could exploit this vulnerability by sending crafted HTTP requests to the web-based management interface of an affected system. A successful exploit could allow the attacker to gain privileges beyond what would normally be authorized for their configured user authorization level. The attacker may be able to access sensitive information, modify the system configuration, or impact the availability of the affected system.
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 vManage | all versions | — | No fix listed | CNA |
- Cisco SD-WAN vManage VendorCisco Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:cisco:sd-wan:*:*:*:*:*:*:*:* | up to 18.3.0; 18.4.0 to before 18.4.5; 19.2.0 to before 19.2.2; 19.3.0 to before 20.1.1 | Vulnerable | Cisco |
- cpe:2.3:a:cisco:sd-wan:*:*:*:*:*:*:*:* Versions up to 18.3.0; 18.4.0 to before 18.4.5; 19.2.0 to before 19.2.2; 19.3.0 to before 20.1.1 Vulnerable ·Cisco
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2020-3374
- 2026-10-03 Alias added: GHSA-wr3q-48h2-426r
References
More Cisco Sd-wan vulnerabilities
- TI-2022-05334 Cisco SD-WAN Software Privilege Escalation Vulnerability KEVCVSS 3.1HIGH 7.8
- TI-2022-05377 Cisco SD-WAN Software Privilege Escalation Vulnerabilities CVSS 3.1HIGH 7.8
- TI-2020-16490 Cisco SD-WAN vManage Software Arbitrary File Creation Vulnerability CVSS 3.1MEDIUM 6.5
- TI-2020-02926 Cisco SD-WAN Solution Software Buffer Overflow Vulnerability CVSS 3.1CRITICAL 9.8
- TI-2018-10947 Cisco SD-WAN Solution Certificate Validation Bypass Vulnerability CVSS 3.1CRITICAL 9.8
- TI-2019-01251 Cisco SD-WAN Solution Command Injection Vulnerability CVSS 3.0HIGH 8.8
Sources
- CVE-2020-3374 · CVE Program
- CVE-2020-3374 · NVD
- FIRST EPSS
- GHSA-wr3q-48h2-426r · 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