Authenticated Path Traversal in Cisco Catalyst SD-WAN Manager Lets Remote Attackers Write Files Outside Allowed Directories; CISA's June 29th KEV Deadline Has Passed

Last refreshed2026-09-27

Status: KEV | Advisory ID: CVE-2026-20262

Key Details

CVE	CVE-2026-20262
Vulnerability Name	Cisco Catalyst SD-WAN Manager Directory or Path Traversal Vulnerability
Affected products	Cisco Catalyst SD-WAN Manager
Exploitation status	Listed in CISA's Known Exploited Vulnerabilities (KEV) catalog, indicating confirmed active exploitation.
Classified as	CWE-22 (Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal'))
KEV listing	Added to CISA's Known Exploited Vulnerabilities (KEV) catalog on 2026-06-15.
Exploitation prediction (EPSS)	28.17% probability of exploitation in the next 30 days (98% percentile) -- FIRST.org's EPSS model.
Federal remediation deadline	2026-06-29 (CISA KEV, Binding Operational Directive).

Affected Products, Subsystems & Sectors

Vendor	Product	Affected Versions	Patch Status
Cisco	Catalyst SD-WAN Manager

Vendor

Product

Affected Versions

Patch Status

Cisco

Catalyst SD-WAN Manager

Subsystems	Industrial Network - Routers/Firewalls
Sectors	Multiple

What to Know

Cisco Catalyst SD-WAN Manager contains a directory or path traversal vulnerability that could allow an authenticated, remote attacker to create a file or overwrite any file on the filesystem of an affected system.

What to Do

Monitor Cisco's web page for any future patch releases.

References

Source	Reference
NVD	https://nvd.nist.gov/vuln/detail/CVE-2026-20262
CVE	https://www.cve.org/CVERecord?id=CVE-2026-20262

Source

Reference

NVD

https://nvd.nist.gov/vuln/detail/CVE-2026-20262

CVE

https://www.cve.org/CVERecord?id=CVE-2026-20262

KEV Required Action

Field	Value
KEV Link	https://www.cisa.gov/known-exploited-vulnerabilities-catalog
Date Added to KEV	2026-06-15
Required Action Due Date	2026-06-29
Required Action	Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.

Field

Value

KEV Link

https://www.cisa.gov/known-exploited-vulnerabilities-catalog

Date Added to KEV

2026-06-15

Required Action Due Date

2026-06-29

Required Action

Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.