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CVE-2026-202626.5MediumCWE-22

Cisco Catalyst SD-WAN Manager Directory or Path Traversal Vulnerability

Cisco · Catalyst SD-WAN Manager

Exploited in the wild · in CISA KEV since 15 Jun
29.1%probability of exploitation in the next 30 days
98th percentile
050100

Higher than 98% of scored CVEs

6.5MediumCVSS 3.1
LowMedium

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.

Full timeline
Quiet for 19 weekslast report 16 Jun9 articles4 outlets
15 Jun · SecurityOnline first23 Aug15 Sep8 OctNow
  • 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.
All coveragerunning total9SecurityOnl…4CISA2SecurityWeek1Security Af…216 Jun1 Aug16 SepNow
  • First report
  • Article
  • Official notice
  • Running total

Added to CISA KEV

Show as table
  1. Could Apple Build Its Own OpenClaw Competitor?
    SecurityOnline · mentions it in passing
  2. Inside the Stealthy Agent Tesla Infection Chain
    SecurityOnline · mentions it in passing
Show 1 more

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References

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