Cisco SD-WAN Software vDaemon Denial of Service Vulnerability
Description
A vulnerability in the vDaemon process of Cisco SD-WAN Software could allow an unauthenticated, remote attacker to cause a device to reload, resulting in a denial of service (DoS) condition. This vulnerability is due to insufficient handling of malformed packets. An attacker could exploit this vulnerability by sending crafted traffic to an affected device. A successful exploit could allow the attacker to cause the device to reload, resulting in a DoS condition.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
An unauthenticated remote attacker can cause a Cisco SD-WAN device to reload by sending crafted traffic to the vDaemon process, resulting in denial of service.
Vulnerability
A vulnerability in the vDaemon process of Cisco SD-WAN Software could allow an unauthenticated, remote attacker to cause a device to reload. This issue is due to insufficient handling of malformed packets. The vulnerability affects all versions of Cisco SD-WAN Software prior to the fixed releases indicated in Cisco's advisory [1].
Exploitation
An attacker can exploit this vulnerability by sending crafted traffic to an affected device. No authentication is required, and the attacker can be remote. The exploit does not require any user interaction or special network position beyond sending the crafted packets [1].
Impact
Successful exploitation causes the device to reload, resulting in a denial of service (DoS) condition. This can disrupt network operations and affect availability. The vulnerability does not allow code execution or data exfiltration [1].
Mitigation
Cisco released free software updates to address this vulnerability. Customers should upgrade to the fixed version specified in the Cisco Security Advisory [1]. No workarounds are available. Customers without service contracts should contact Cisco TAC for assistance.
AI Insight generated on May 26, 2026. Synthesized from this CVE's description and the cited reference URLs; citations are validated against the source bundle.
Affected products
2- Cisco/Cisco SD-WAN Solutionv5Range: n/a
Patches
0No patches discovered yet.
Vulnerability mechanics
AI mechanics synthesis has not run for this CVE yet.
References
1- tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sdwan-dos-Ckn5cVqWmitrevendor-advisoryx_refsource_CISCO
News mentions
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