CVE-2026-20245
7.8, high Known exploitedCisco Catalyst SD-WAN Manager Improper Encoding or Escaping of Output Vulnerability
- CVSS
- 7.8, high high CVSS v3.1
- EPSS, next 30 days
- 25% higher than 97.9% of scored CVEs
- Exploitation
- Confirmed in the wild
- Published
- 4 Jun 20264 months ago
Known exploited
CISA added this to the Known Exploited Vulnerabilities Catalog on 9 Jun 2026. US federal agencies had to remediate by 23 Jun 2026, a deadline that has passed.
Required action. Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Description
A vulnerability in the CLI of Cisco Catalyst SD-WAN Controller, formerly SD-WAN vSmart, Cisco Catalyst SD-WAN Manager, formerly SD-WAN vManage, and Cisco Catalyst SD-WAN Validator, formerly SD-WAN vBond, could allow an authenticated, local attacker to execute arbitrary commands as root by supplying a crafted file to the affected system. This vulnerability is due to insufficient validation of user-supplied input. An attacker could exploit this vulnerability by uploading a crafted file to the affected system. A successful exploit could allow the attacker to perform command injection attacks on an affected system and elevate their privileges as the root user. To exploit this vulnerability, the attacker must have netadmin privileges on the affected system. This would require valid credentials or exploitation of or . Cisco is not aware of successful exploitation by other methods. Cisco has observed limited cases where the exploitation of this bug resulted in a configuration change pushed to edge devices. Cisco recommends that customers upgrade to the fixed software that is documented in the that was published on May 14, 2026, and verify the configuration of the edge devices.
Details
- Vendor
- Cisco
- Product
- Cisco Catalyst SD-WAN Controller
- Weakness
- CWE-116 (opens in a new tab)
- Status
- Analyzed
- Updated
- 23 Jul 2026
- Assigner
- psirt@cisco.com
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
References 3
Advisories 2
The kind is read from NVD's tags where present and from the shape of the URL otherwise, so treat it as a hint.
Other Cisco CVEs
Every Cisco CVE we holdSame vendor in what we hold, not a known link between the flaws.
- CVE-2026-76519 Cisco Secure Email Gateway Relative Path Traversal Vulnerability KEV EPSS 2% 9.8, critical
- CVE-2026-76504 Cisco Catalyst SD-WAN Manager Hex Encoding Vulnerability KEV EPSS 2% 9.8, critical
- CVE-2026-76460 Cisco Identity Services Engine Incorrect Use of Privileged APIs Vulnerability KEV EPSS 14% 10, critical
- CVE-2026-76461 Cisco Secure Email Gateway SQL Injection Vulnerability KEV EPSS 30% 9.8, critical
- CVE-2026-20349 Cisco Secure Firewall Adaptive Security Appliance (ASA) and Secure Firewall Threat Defense (FTD) Heap Inspection Vulnerability KEV EPSS 1% 8.6, high
- CVE-2026-20316 Cisco Secure Firewall Management Center Use of Hard-coded Password Vulnerability KEV EPSS 35% 5.3, medium
- CVE-2026-20262 Cisco Catalyst SD-WAN Manager Directory or Path Traversal Vulnerability KEV EPSS 28% 6.5, medium
- CVE-2026-20230 Cisco Unified Communications Manager Server-Side Request Forgery (SSRF) Vulnerability KEV EPSS 88% 8.6, high
Beyond this page
Is CVE-2026-20245 in your network?
This page tells you how dangerous CVE-2026-20245 is out there. Whether it sits on one of your devices, only a scan of your own network can tell. That is what our systems do, every day, for the companies we protect.
CVE-2026-20245 is in the CISA catalogue of exploited vulnerabilities: attackers are already exploiting it.
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EXYS7600 OCELOT
Find it before attackers do
Ocelot scans your network on a schedule and reports every vulnerability it finds by its CVE identifier, with its CVSS score and how many of your hosts are affected. A finding like CVE-2026-20245 comes with the devices to patch.
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EXYS7950 KONDRA
Detect it if it's exploited
Until the patch is applied, Kondra monitors your network, events and endpoints in real time. It keeps an inventory of the software installed on every endpoint, and its anomaly detection rules flag what an attacker does once inside.
Learn more about EXYS7950 KONDRA
Assembled from the NVD 2.0 API, the CISA Known Exploited Vulnerabilities Catalog and FIRST EPSS. Scores are as of our last collection on 17 Oct 2026, not the live upstream state.