CVE-2026-20210
Last modified
CVE-2026-20210 is a medium-severity vulnerability rated 5.4/10 on the CVSS scale. A vulnerability in the web UI of Cisco Catalyst SD-WAN Manager, formerly SD-WAN vManage, could allow an authenticated, remote attacker with read-only permissions to modify configurations and perform unauthorized actions on an affected system. This vulnerability exists because of a failure to redact sensitive information within device configurations and templates. An attacker could exploit this vulnerability by elevating their read-only permissions to those of a high-privileged user. EPSS estimates a 0.19% chance of exploitation in the next 30 days.
Description
A vulnerability in the web UI of Cisco Catalyst SD-WAN Manager, formerly SD-WAN vManage, could allow an authenticated, remote attacker with read-only permissions to modify configurations and perform unauthorized actions on an affected system. This vulnerability exists because of a failure to redact sensitive information within device configurations and templates. An attacker could exploit this vulnerability by elevating their read-only permissions to those of a high-privileged user. A successful exploit could allow the attacker to access or modify configuration settings within Cisco Catalyst SD-WAN Manager as a high-privileged user.
Metrics
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Cisco | Catalyst Sd-Wan Manager | < 20.9.9.1 |
| Cisco | Catalyst Sd-Wan Manager | >= 20.10, < 20.12.5.4 |
| Cisco | Catalyst Sd-Wan Manager | >= 20.12.6, < 20.12.6.2 |
| Cisco | Catalyst Sd-Wan Manager | >= 20.13, < 20.15.4.4 |
| Cisco | Catalyst Sd-Wan Manager | >= 20.15.5, < 20.15.5.2 |
| Cisco | Catalyst Sd-Wan Manager | >= 20.16, < 20.18.2.2 |
| Cisco | Catalyst Sd-Wan Manager | >= 26.1, < 26.1.1.1 |
| Cisco | Catalyst Sd-Wan Manager | 20.12.7 |
References
Timeline
- Published
- Last Modified
- Status
- Analyzed
Frequently Asked Questions
What is CVE-2026-20210?
How severe is CVE-2026-20210?
How do I fix CVE-2026-20210?
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2026
- CVE-2026-20203In Splunk Enterprise versions below 10.2.2, 10.0.5, 9.4.10, …4.3
- CVE-2026-20204In Splunk Enterprise versions below 10.2.1, 10.0.5, 9.4.10, …7.1
- CVE-2026-20205In Splunk MCP Server app versions below 1.0.3 , a user who h…7.2
- CVE-2026-20206A vulnerability in the BrowserBot component of Cisco Thousan…6.3
- CVE-2026-20209A vulnerability in the web UI of Cisco Catalyst SD-WAN Manag…5.4
- CVE-2026-2021The Slideshow Gallery LITE plugin for WordPress is vulnerabl…6.4
- CVE-2026-20213A vulnerability in the PE file format parser of ClamAV could…7.5
- CVE-2026-20214A vulnerability in the FSG file format parser of ClamAV coul…7.5
- CVE-2026-20215A vulnerability in the 7z file format parser of ClamAV could…7.5
- CVE-2026-20216A vulnerability in the InstallShield file format parser of C…7.5
- CVE-2026-20217A vulnerability in the PESpin file format parser of ClamAV c…7.5
- CVE-2026-20219A vulnerability in the REST API of Cisco Slido could have al…5.4
Are you affected by CVE-2026-20210?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST