Cisco Catalyst SD-WAN Manager Directory or Path Traversal Vulnerability
Cisco · Catalyst SD-WAN Manager
Higher than 98% of scored CVEs
Federal deadline
CISA KEV · added 15 Jun · catalogue entry
Passed 122 days ago
DescriptionNVD
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.
CISA 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.
Coverage9 articles · 4 outlets
One row per outlet, in order of first report. First in our coverage: SecurityOnline, 15 Jun.
- Mon 15 Jun, 18:09 UTC. SecurityOnline, first report. Cisco SD-WAN Vulnerability Exploited in the Wild: Patch CVE-2026-20262 Now. Cites a CVE in CISA KEV.
- Mon 15 Jun, 19:41 UTC. CISA, its first report on the story. CISA adds Cisco SDWAN Manager CVE-2026-20262 to KEV list. Cites a CVE in CISA KEV.
- Mon 15 Jun, 20:17 UTC. CISA. CISA flags Cisco Catalyst SD WAN flaw CVE-2026-20262 in KEV list. Cites a CVE in CISA KEV.
- Tue 16 Jun, 01:30 UTC. SecurityOnline. LiteSpeed flaw lets users gain root, Cisco SD WAN also exposed. Cites a CVE in CISA KEV.
- Tue 16 Jun, 06:30 UTC. SecurityWeek, its first report on the story. Cisco Patches Another SD-WAN Zero-Day Exploited in Attacks. Cites a CVE in CISA KEV.
- Tue 16 Jun, 08:21 UTC. SecurityOnline. Inside the Stealthy Agent Tesla Infection Chain. Cites a CVE in CISA KEV.
- Tue 16 Jun, 09:29 UTC. Security Affairs, its first report on the story. CISA Flags Cisco SD WAN and LiteSpeed Plugins Under Active Attack. Cites a CVE in CISA KEV.
- Tue 16 Jun, 09:30 UTC. SecurityOnline. Could Apple Build Its Own OpenClaw Competitor?. Cites a CVE in CISA KEV.
- Tue 16 Jun, 11:30 UTC. Security Affairs. Cisco SD WAN manager flaw lets attackers write files, patch urged. Cites a CVE in CISA KEV.
- First report
- Article
- Official notice
- Running total
Added to CISA KEV
Show as tableHide table
| Published (UTC) | Outlet | Headline |
|---|---|---|
| 15 Jun 18:09 | SecurityOnline | Cisco SD-WAN Vulnerability Exploited in the Wild: Patch CVE-2026-20262 Now |
| 15 Jun 19:41 | CISA | CISA adds Cisco SDWAN Manager CVE-2026-20262 to KEV list |
| 15 Jun 20:17 | CISA | CISA flags Cisco Catalyst SD WAN flaw CVE-2026-20262 in KEV list |
| 16 Jun 01:30 | SecurityOnline | LiteSpeed flaw lets users gain root, Cisco SD WAN also exposed |
| 16 Jun 06:30 | SecurityWeek | Cisco Patches Another SD-WAN Zero-Day Exploited in Attacks |
| 16 Jun 08:21 | SecurityOnline | Inside the Stealthy Agent Tesla Infection Chain |
| 16 Jun 09:29 | Security Affairs | CISA Flags Cisco SD WAN and LiteSpeed Plugins Under Active Attack |
| 16 Jun 09:30 | SecurityOnline | Could Apple Build Its Own OpenClaw Competitor? |
| 16 Jun 11:30 | Security Affairs | Cisco SD WAN manager flaw lets attackers write files, patch urged |
- Could Apple Build Its Own OpenClaw Competitor?SecurityOnline · mentions it in passing
- Inside the Stealthy Agent Tesla Infection ChainSecurityOnline · mentions it in passing
- LiteSpeed flaw lets users gain root, Cisco SD WAN also exposedSecurityOnline · mentions it in passing
- CISA flags Cisco Catalyst SD WAN flaw CVE-2026-20262 in KEV listCISA · official notice
- CISA adds Cisco SDWAN Manager CVE-2026-20262 to KEV listCISA · official notice
- Cisco SD-WAN Vulnerability Exploited in the Wild: Patch CVE-2026-20262 NowSecurityOnline · first in our coverage
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