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CVE-2026-20262: Cisco Catalyst SD-WAN Manager Directory or Path Traversal Vulnerability

criticalknown exploitedpublic exploitCVE-2026-20262
Actively exploited. At least one CVE in this advisory is listed in the CISA Known Exploited Vulnerabilities catalog — exploitation has been observed in the wild. Treat remediation as urgent.
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.

CSIRTS triage

vendor: Ciscoproduct: Catalyst SD-WAN ManagerPath traversal
What
The vulnerability allows an authenticated, remote attacker to create or overwrite any file on the filesystem of an affected system.
Who is affected
Authenticated users of Cisco Catalyst SD-WAN Manager.
Urgency
Remediation is critical due to active exploitation and the severity of the vulnerability.
Action
Install the software updates provided by Cisco.

AI-assisted analysis generated from the source advisory — verify against the original.

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Details

Source
CISA Known Exploited Vulnerabilities (US · database · site)
Severity
critical
Published
2026-06-15
Exploitation
Observed in the wild (CISA KEV)

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

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Referenced CVEs

CVECSIRTS overviewExternal
CVE-2026-20262coverage & exploitation statusNVD · CVE.org

Same CVEs, other sources

How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.

Recent advisories for Cisco Catalyst SD-WAN

A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.

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