CVE-2026-20210
What it is
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.
At a glance
- Exploitability
- Can be exploited over the network with a low-privilege account. Limited direct impact.
- Exploit odds
- 0.2% chance of exploitation in the next 30 days (EPSS).
- Fix
- A patch, advisory or fixed version is referenced. Upgrade or apply it.
Timeline
- PublishedDisclosed publicly on CVE.org and NVD
- Last updatedMost recent change to the record
Why it ranks here
- Exploited in the wild: no, CISA does not list it.
- Exploit odds: 0.2% in the next 30 days (EPSS).
- Severity: 5.4 MEDIUM (CVSS).
- Fix: a patch or advisory is linked.
Details
- Published
- Last modified
- Exploit probability
- 0.2% · EPSS, next 30 days
- Weakness
- CWE-779
- Record status
- Analyzed
Affected
- Cisco Catalyst sd-wan Manager < 20.9.9.1
- Cisco Catalyst sd-wan Manager < 20.12.5.4
- Cisco Catalyst sd-wan Manager < 20.12.6.2
- Cisco Catalyst sd-wan Manager < 20.15.4.4
- Cisco Catalyst sd-wan Manager < 20.15.5.2
- Cisco Catalyst sd-wan Manager < 20.18.2.2
- Cisco Catalyst sd-wan Manager < 26.1.1.1
- Cisco Catalyst sd-wan Manager 20.12.7
Attack profile CVSS 3.1 · 5.4
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- Low
- Integrity
- Low
- Availability
- None
Raw vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
Is it in your code?
Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.
Read https://cve-list.com/agent/cve/CVE-2026-20210.md and follow it. Check whether this project is affected by CVE-2026-20210. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.
