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CVE-2026-20262

Cisco Catalyst SD-WAN Manager Directory or Path Traversal

6.5 MEDIUMActively exploited (CISA KEV)EPSS 28.2%
  1. Published15 Jun 2026
  2. Added to CISA KEV15 Jun 2026
  3. Remediation due29 Jun 2026
Actively exploited (CISA KEV)

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.

Added to KEV: 15 Jun 2026Federal remediation due: 29 Jun 2026

Description

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.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredLow
User interactionNone
ScopeUnchanged
ConfidentialityNone
IntegrityHigh
AvailabilityNone
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

Affected products

Cisco Catalyst SD-WAN Manager≥ 20.10 < 20.12.7.2 · ≥ 20.13 < 20.15.4.5 · ≥ 20.15.5 < 20.15.5.3 · ≥ 20.16 < 20.18.3.1

Remediation

Fixed in
Cisco Catalyst SD-WAN Manager≥ 20.12.7.2

References

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Frequently asked

Is CVE-2026-20262 being actively exploited?

Yes. CVE-2026-20262 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added 15 Jun 2026.

How severe is CVE-2026-20262?

CVE-2026-20262 has a CVSS 3.1 base score of 6.5, rated medium. EPSS estimates a 28.2% probability of exploitation.

Which products are affected by CVE-2026-20262?

Affected products include Cisco Catalyst SD-WAN Manager.

How do I fix CVE-2026-20262?

Upgrade affected software to a fixed version, for example Cisco Catalyst SD-WAN Manager 20.12.7.2 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2026-20262 against the real software inventory on every managed device, every day. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. Because it is on the CISA KEV list, Secuno flags any affected asset as top-priority automatically. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.