Privilege Escalation via Lobby Ambassador API in Cisco IOS XE
CVE-2026-20114 Published on March 25, 2026
A vulnerability in the Lobby Ambassador web-based management API of Cisco IOS XE Software could allow an authenticated, remote attacker to elevate their privileges and access management APIs that would not normally be available for Lobby Ambassador users. This vulnerability exists because parameters that are received by an API endpoint are not sufficiently validated. An attacker could exploit this vulnerability by authenticating as a Lobby Ambassador user and sending a crafted HTTP request to an affected device. A successful exploit could allow the attacker to create a new user with privilege level 1 access to the web-based management API. The attacker would then be able to access the device with these new credentials and privileges.
Vulnerability Analysis
CVE-2026-20114 is exploitable with network access, and requires small amount of user privileges. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have a small impact on confidentiality and integrity, and no impact on availability.
Weakness Type
Improper Validation of Syntactic Correctness of Input
The product receives input that is expected to be well-formed - i.e., to comply with a certain syntax - but it does not validate or incorrectly validates that the input complies with the syntax.
Products Associated with CVE-2026-20114
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Affected Versions
Cisco IOS XE Software:- Version 16.11.1 is affected.
- Version 16.11.1a is affected.
- Version 16.11.1b is affected.
- Version 16.11.2 is affected.
- Version 16.11.1s is affected.
- Version 16.12.1 is affected.
- Version 16.12.1s is affected.
- Version 16.12.1a is affected.
- Version 16.12.1c is affected.
- Version 16.12.1w is affected.
- Version 16.12.2 is affected.
- Version 16.12.1y is affected.
- Version 16.12.2a is affected.
- Version 16.12.3 is affected.
- Version 16.12.8 is affected.
- Version 16.12.2s is affected.
- Version 16.12.1x is affected.
- Version 16.12.1t is affected.
- Version 16.12.4 is affected.
- Version 16.12.3s is affected.
- Version 16.12.3a is affected.
- Version 16.12.4a is affected.
- Version 16.12.5 is affected.
- Version 16.12.6 is affected.
- Version 16.12.1z1 is affected.
- Version 16.12.5a is affected.
- Version 16.12.5b is affected.
- Version 16.12.1z2 is affected.
- Version 16.12.6a is affected.
- Version 16.12.7 is affected.
- Version 16.12.9 is affected.
- Version 16.12.10 is affected.
- Version 16.12.10a is affected.
- Version 16.12.11 is affected.
- Version 16.12.12 is affected.
- Version 16.12.13 is affected.
- Version 16.12.14 is affected.
- Version 17.1.1 is affected.
- Version 17.1.1a is affected.
- Version 17.1.1s is affected.
- Version 17.1.1t is affected.
- Version 17.1.3 is affected.
- Version 17.2.1 is affected.
- Version 17.2.1r is affected.
- Version 17.2.1a is affected.
- Version 17.2.1v is affected.
- Version 17.2.2 is affected.
- Version 17.2.3 is affected.
- Version 17.3.1 is affected.
- Version 17.3.2 is affected.
- Version 17.3.3 is affected.
- Version 17.3.1a is affected.
- Version 17.3.1w is affected.
- Version 17.3.2a is affected.
- Version 17.3.1x is affected.
- Version 17.3.1z is affected.
- Version 17.3.4 is affected.
- Version 17.3.5 is affected.
- Version 17.3.4a is affected.
- Version 17.3.6 is affected.
- Version 17.3.4b is affected.
- Version 17.3.4c is affected.
- Version 17.3.5a is affected.
- Version 17.3.5b is affected.
- Version 17.3.7 is affected.
- Version 17.3.8 is affected.
- Version 17.3.8a is affected.
- Version 17.4.1 is affected.
- Version 17.4.2 is affected.
- Version 17.4.1a is affected.
- Version 17.4.1b is affected.
- Version 17.4.2a is affected.
- Version 17.5.1 is affected.
- Version 17.5.1a is affected.
- Version 17.6.1 is affected.
- Version 17.6.2 is affected.
- Version 17.6.1w is affected.
- Version 17.6.1a is affected.
- Version 17.6.1x is affected.
- Version 17.6.3 is affected.
- Version 17.6.1y is affected.
- Version 17.6.1z is affected.
- Version 17.6.3a is affected.
- Version 17.6.4 is affected.
- Version 17.6.1z1 is affected.
- Version 17.6.5 is affected.
- Version 17.6.6 is affected.
- Version 17.6.6a is affected.
- Version 17.6.5a is affected.
- Version 17.6.7 is affected.
- Version 17.6.8 is affected.
- Version 17.6.8a is affected.
- Version 17.7.1 is affected.
- Version 17.7.1a is affected.
- Version 17.7.1b is affected.
- Version 17.7.2 is affected.
- Version 17.10.1 is affected.
- Version 17.10.1a is affected.
- Version 17.10.1b is affected.
- Version 17.8.1 is affected.
- Version 17.8.1a is affected.
- Version 17.9.1 is affected.
- Version 17.9.1w is affected.
- Version 17.9.2 is affected.
- Version 17.9.1a is affected.
- Version 17.9.1x is affected.
- Version 17.9.1y is affected.
- Version 17.9.3 is affected.
- Version 17.9.2a is affected.
- Version 17.9.1x1 is affected.
- Version 17.9.3a is affected.
- Version 17.9.4 is affected.
- Version 17.9.1y1 is affected.
- Version 17.9.5 is affected.
- Version 17.9.4a is affected.
- Version 17.9.5a is affected.
- Version 17.9.5b is affected.
- Version 17.9.6 is affected.
- Version 17.9.6a is affected.
- Version 17.9.7 is affected.
- Version 17.9.5e is affected.
- Version 17.9.5f is affected.
- Version 17.9.8 is affected.
- Version 17.9.7a is affected.
- Version 17.9.7b is affected.
- Version 17.11.1 is affected.
- Version 17.11.1a is affected.
- Version 17.12.1 is affected.
- Version 17.12.1w is affected.
- Version 17.12.1a is affected.
- Version 17.12.1x is affected.
- Version 17.12.2 is affected.
- Version 17.12.3 is affected.
- Version 17.12.2a is affected.
- Version 17.12.1y is affected.
- Version 17.12.1z is affected.
- Version 17.12.4 is affected.
- Version 17.12.3a is affected.
- Version 17.12.1z1 is affected.
- Version 17.12.1z2 is affected.
- Version 17.12.4a is affected.
- Version 17.12.5 is affected.
- Version 17.12.4b is affected.
- Version 17.12.1z3 is affected.
- Version 17.12.5a is affected.
- Version 17.12.1z4 is affected.
- Version 17.12.5b is affected.
- Version 17.12.5c is affected.
- Version 17.12.5d is affected.
- Version 17.13.1 is affected.
- Version 17.13.1a is affected.
- Version 17.14.1 is affected.
- Version 17.14.1a is affected.
- Version 17.15.1 is affected.
- Version 17.15.1w is affected.
- Version 17.15.1a is affected.
- Version 17.15.2 is affected.
- Version 17.15.1b is affected.
- Version 17.15.1x is affected.
- Version 17.15.1z is affected.
- Version 17.15.3 is affected.
- Version 17.15.2c is affected.
- Version 17.15.2a is affected.
- Version 17.15.1y is affected.
- Version 17.15.2b is affected.
- Version 17.15.3a is affected.
- Version 17.15.4 is affected.
- Version 17.15.3b is affected.
- Version 17.15.4d is affected.
- Version 17.15.4e is affected.
- Version 17.16.1 is affected.
- Version 17.16.1a is affected.
- Version 17.17.1 is affected.
- Version 17.18.1 is affected.
- Version 17.18.1w is affected.
- Version 17.18.1a is affected.