Wireless Lan Controller Software
CVE-2017-3854
HIGH
Vulnerability Assessment
| Weakness |
CWE
OWASP Top 10:2025
A07:2025 - Authentication Failures
ASVS 5.0
V6 - Authentication Authentication mechanism validation
MITRE ATT&CK
2 techniques across 2 tactics: Defense Evasion, Initial Access The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up. |
| Impact | CVSS score of 8.8 (HIGH). Attack characteristics: adjacent network attack vector, low complexity, no privileges required, no user interaction not required. EPSS exploitation probability: 1.00%. |
| Exploit ScenarioDerived | An attacker could exploit this vulnerability to bypass authentication mechanisms to gain unauthorized access. No authentication is required to exploit this vulnerability. |
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Alert meAnalysisAI
A vulnerability in the mesh code of Cisco Wireless LAN Controller (WLC) software could allow an unauthenticated, remote attacker to impersonate a WLC in a meshed topology. Rated high severity (CVSS 8.8), this vulnerability is no authentication required, low attack complexity. No vendor patch available.
RemediationAI
No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Implement multi-factor authentication, enforce strong password policies, use proven authentication frameworks.
Affects your stack
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Checking this CVE against your own stacks and servers is part of the Basic plan and up.
Technical ContextAI · show details
This vulnerability is classified as Improper Authentication (CWE-287), which allows attackers to bypass authentication mechanisms to gain unauthorized access. A vulnerability in the mesh code of Cisco Wireless LAN Controller (WLC) software could allow an unauthenticated, remote attacker to impersonate a WLC in a meshed topology. The vulnerability is due to insufficient authentication of the parent access point in a mesh configuration. An attacker could exploit this vulnerability by forcing the target system to disconnect from the correct parent access point and reconnect to a rogue access point owned by the attacker. An exploit could allow the attacker to control the traffic flowing through the impacted access point or take full control of the target system. This vulnerability affects the following products running a vulnerable version of Wireless LAN Controller software and configured for meshed mode: Cisco 8500 Series Wireless Controller, Cisco 5500 Series Wireless Controller, Cisco 2500 Series Wireless Controller, Cisco Flex 7500 Series Wireless Controller, Cisco Virtual Wireless Controller, Wireless Services Module 2 (WiSM2). Note that additional configuration is needed in addition to upgrading to a fixed release. Cisco Bug IDs: CSCuc98992 CSCuu14804. Affected products include: Cisco Wireless Lan Controller Firmware, Cisco Wireless Lan Controller Software.
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Severity by source
AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
DescriptionCVE.org
A vulnerability in the mesh code of Cisco Wireless LAN Controller (WLC) software could allow an unauthenticated, remote attacker to impersonate a WLC in a meshed topology. The vulnerability is due to insufficient authentication of the parent access point in a mesh configuration. An attacker could exploit this vulnerability by forcing the target system to disconnect from the correct parent access point and reconnect to a rogue access point owned by the attacker. An exploit could allow the attacker to control the traffic flowing through the impacted access point or take full control of the target system. This vulnerability affects the following products running a vulnerable version of Wireless LAN Controller software and configured for meshed mode: Cisco 8500 Series Wireless Controller, Cisco 5500 Series Wireless Controller, Cisco 2500 Series Wireless Controller, Cisco Flex 7500 Series Wireless Controller, Cisco Virtual Wireless Controller, Wireless Services Module 2 (WiSM2). Note that additional configuration is needed in addition to upgrading to a fixed release. Cisco Bug IDs: CSCuc98992 CSCuu14804.
Threat Intelligence Overview
NVD
CVE.org
EPSS
How this decision was reached
The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.
What every action level means
SSVC AssessmentENISA
Priority Score
Attack Technique
Authentication bypass attacks exploit flaws in the verification mechanisms that control access to systems and applications.
Affected Products (CPE)CVE.org
screens/base/web_auth_custom.html on Cisco Wireless LAN Controller (WLC) devices with software 7.2.110.0 allows remote a
Buffer overflow in the redirection functionality in Cisco Wireless LAN Controller (WLC) Software 7.2 through 7.4 before
Multiple cross-site request forgery (CSRF) vulnerabilities on Cisco Wireless LAN Controller (WLC) devices with software
A vulnerability in the web interface of Cisco Wireless LAN Controller Software could allow a low-privileged, authenticat
Cisco Wireless LAN Controller (WLC) devices 7.4 before 7.4.110.0 distribute Aironet IOS software with a race condition i
Cisco Wireless LAN Controller (WLC) devices with software 7.6.x, 8.0 before 8.0.121.0, and 8.1 before 8.1.131.0 allow re
Cisco Wireless LAN Controller (WLC) devices with software 4.x, 5.x, 6.0, and 7.0 before 7.0.220.4, when CPU-based ACLs a
The HTTP Profiling functionality on Cisco Wireless LAN Controller (WLC) devices with software 7.3.101.0 allows remote au
Cisco Wireless LAN Controller (WLC) devices with software 7.0 before 7.0.235.3, 7.1 and 7.2 before 7.2.111.3, and 7.3 be
Cross-site scripting (XSS) vulnerability in screens/base/web_auth_custom.html on Cisco Wireless LAN Controller (WLC) dev
A vulnerability in the web-based management interface of Cisco Wireless LAN Controller (WLC) Software could allow an una
A vulnerability in the IP packet processing of Cisco Access Point (AP) Software could allow an unauthenticated, remote a
GitHub PoC
Exploit-DB