Privilege Escalation Vulnerability in Cisco SD-WAN Solution
Description
A vulnerability in the local CLI of the Cisco SD-WAN Solution could allow an authenticated, local attacker to escalate privileges and modify device configuration files. The vulnerability exists because user input is not properly sanitized for certain commands at the CLI. An attacker could exploit this vulnerability by sending crafted commands to the CLI of an affected device. A successful exploit could allow the attacker to establish an interactive session with elevated privileges. The attacker could then use the elevated privileges to further compromise the device or obtain additional configuration data from the device.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
CVE-2019-1646 allows an authenticated attacker with local CLI access to escalate privileges and modify the Cisco SD-WAN Solution configuration via unsanitized input.
Vulnerability
A vulnerability in the local CLI of the Cisco SD-WAN Solution, affecting all versions prior to the fixed releases, allows an authenticated, local attacker to escalate privileges. The issue arises because user input is not properly sanitized for certain CLI commands [1].
Exploitation
An attacker must have authenticated access to the local CLI of an affected Cisco SD-WAN device. The attack is performed by sending crafted commands that bypass input sanitization, allowing the attacker to escalate privileges [1].
Impact
Successful exploitation grants the attacker an interactive session with elevated privileges. With these privileges, the attacker could modify device configuration files, further compromise the device, or obtain additional configuration data from the device, leading to complete compromise of confidentiality, integrity, and availability [1].
Mitigation
Cisco has released free software updates to address this vulnerability. Customers should upgrade to the fixed versions as specified in the Cisco Security Advisory [1]. No workarounds are available. Customers without service contracts should contact the Cisco TAC for assistance [1].
AI Insight generated on May 25, 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
2- tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190123-sdwan-escalmitrevendor-advisoryx_refsource_CISCO
- www.securityfocus.com/bid/106723mitrevdb-entryx_refsource_BID
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