Denial of Service Vulnerability in Cisco IOS XE Wireless Controller Software for Catalyst CW9800 Family
CVE-2026-20086

8.6HIGH

Key Information:

Vendor

Cisco
Status
Cisco iOS Xe Software
Vendor
CVE Published:
25 March 2026

Badges

👾 Exploit Exists

What is CVE-2026-20086?

A vulnerability exists in the processing of malformed CAPWAP packets within Cisco IOS XE Wireless Controller Software for the Catalyst CW9800 Family. This flaw allows an unauthenticated, remote attacker to exploit the affected device, potentially leading to a denial of service condition. By sending a specially crafted CAPWAP packet to the target, an attacker could cause the device to reload unexpectedly, interrupting service and impacting network operations. Organizations using this software should prioritize patching and review configurations to mitigate risks associated with this vulnerability.

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Affected Version(s)

Cisco IOS XE Software 17.14.1

Cisco IOS XE Software 17.15.1

Cisco IOS XE Software 17.15.2

References

https://sec.cloudapps.cisco.com/security/center/content/C...

CVSS V3.1

Score:
8.6
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Changed

Timeline

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

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