CVE-2026-20262 KEV
Patch first
On CISA KEV — known exploited in the wild, due 2026-06-29.
Description
A vulnerability in the web UI of Cisco Catalyst SD-WAN Manager, formerly SD-WAN vManage, could allow an authenticated, remote attacker to create a file or overwrite any file on the filesystem of an affected system. This vulnerability exists because the affected software does not properly validate user-supplied input during a file upload process. An attacker could exploit this vulnerability by sending a crafted HTTP request to an affected API endpoint of the affected system. A successful exploit could allow the attacker to create or overwrite any file on the underlying operating system. This file could later be used to elevate to root. To exploit this vulnerability, the attacker must have valid credentials with at least a lower-privileged, single-task user account.
Scoring
| CVSS | 6.5 (MEDIUM, v3.1) |
|---|---|
| Vector | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N |
| EPSS | 28.17% — more likely to be exploited than 98% of all CVEs |
| Weakness | CWE-22 |
| On CISA KEV | yes — remediate by 2026-06-29 |
| Public exploit | none known |
| Published | 2026-06-15 |
| Last modified | 2026-07-24 |
CISA KEV
| Name | Cisco Catalyst SD-WAN Manager Directory or Path Traversal Vulnerability |
|---|---|
| Added | 2026-06-15 |
| Due | 2026-06-29 |
| Vendor / product | Cisco / Catalyst SD-WAN Manager |
| Ransomware use | none reported |
Affected (1)
| Vendor | Product |
|---|---|
| cisco | catalyst sd-wan manager |
References
→ the Explorer · watch your stack · NVD