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CVE-2018-15395

Cisco Wireless LAN Controller Software Privilege Escalation Vulnerability

5.4 Medium

A vulnerability in the authentication and authorization checking mechanisms of Cisco Wireless LAN Controller (WLC) Software could allow an authenticated, adjacent attacker to gain network access to a Cisco TrustSec domain. Under normal circumstances, this access should be prohibited. The vulnerability is due to the dynamic assignment of Security Group Tags (SGTs) during a wireless roam from one Service Set Identifier (SSID) to another within the Cisco TrustSec domain. An attacker could exploit this vulnerability by attempting to acquire an SGT from other SSIDs within the domain. Successful exploitation could allow the attacker to gain privileged network access that should be prohibited under normal circumstances.

Attack profile

How easy it is to exploit

Attack vector
Adjacent network
Complexity
Low
Privileges needed
Low
User interaction
None

What an attacker can affect

Confidentiality
Low
Integrity
Low
Availability
None

Exploit likelihood

0.58%Down 0.3 points since Apr 14, 2021
90%50%10%1%

What each source reports

CVE List Score used 5.4

Cisco Wireless LAN Controller Software Privilege Escalation Vulnerability

A vulnerability in the authentication and authorization checking mechanisms of Cisco Wireless LAN Controller (WLC) Software could allow an authenticated, adjacent attacker to gain network access to a Cisco TrustSec domain. Under normal circumstances, this access should be prohibited. The vulnerability is due to the dynamic assignment of Security Group Tags (SGTs) during a wireless roam from one Service Set Identifier (SSID) to another within the Cisco TrustSec domain. An attacker could exploit this vulnerability by attempting to acquire an SGT from other SSIDs within the domain. Successful exploitation could allow the attacker to gain privileged network access that should be prohibited under normal circumstances.

Record
CVE-2018-15395
CVSS 3.0
5.4 MediumCVSS:3.0/AV:A/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
Weakness
CWE-284
Updated
2026-11-02
EUVDEUVD-2018-7273 5.4

A vulnerability in the authentication and authorization checking mechanisms of Cisco Wireless LAN Controller (WLC) Software could allow an authenticated, adjacent attacker to gain network access to a Cisco TrustSec domain. Under normal circumstances, this access should be prohibited. The vulnerability is due to the dynamic assignment of Security Group Tags (SGTs) during a wireless roam from one Service Set Identifier (SSID) to another within the Cisco TrustSec domain. An attacker could exploit this vulnerability by attempting to acquire an SGT from other SSIDs within the domain. Successful exploitation could allow the attacker to gain privileged network access that should be prohibited under normal circumstances.

Record
EUVD-2018-7273
CVSS 3.0
5.4 MediumCVSS:3.0/AV:A/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
Updated
2026-11-03
GitHub AdvisoriesGHSA-r7pm-6rfr-vfm2 5.4

A vulnerability in the authentication and authorization checking mechanisms of Cisco Wireless LAN...

A vulnerability in the authentication and authorization checking mechanisms of Cisco Wireless LAN Controller (WLC) Software could allow an authenticated, adjacent attacker to gain network access to a Cisco TrustSec domain. Under normal circumstances, this access should be prohibited. The vulnerability is due to the dynamic assignment of Security Group Tags (SGTs) during a wireless roam from one Service Set Identifier (SSID) to another within the Cisco TrustSec domain. An attacker could exploit this vulnerability by attempting to acquire an SGT from other SSIDs within the domain. Successful exploitation could allow the attacker to gain privileged network access that should be prohibited under normal circumstances.

Record
GHSA-r7pm-6rfr-vfm2
CVSS 3.0
5.4 MediumCVSS:3.0/AV:A/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
Updated
2026-11-02
NVD 5.4

A vulnerability in the authentication and authorization checking mechanisms of Cisco Wireless LAN Controller (WLC) Software could allow an authenticated, adjacent attacker to gain network access to a Cisco TrustSec domain. Under normal circumstances, this access should be prohibited. The vulnerability is due to the dynamic assignment of Security Group Tags (SGTs) during a wireless roam from one Service Set Identifier (SSID) to another within the Cisco TrustSec domain. An attacker could exploit this vulnerability by attempting to acquire an SGT from other SSIDs within the domain. Successful exploitation could allow the attacker to gain privileged network access that should be prohibited under normal circumstances.

Record
CVE-2018-15395
CVSS 3.0
5.4 MediumCVSS:3.0/AV:A/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
CVSS 2.0
2.7 LowAV:A/AC:L/Au:S/C:P/I:N/A:N
Weakness
CWE-284
Updated
2026-11-02

Affected products

History

History
RecordedChangedSources
aliasesEUVD
first indexedCVE List, GitHub Advisories, NVD

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2018-15395 is a medium vulnerability (CVSS 5.4) in Cisco Wireless Lan Controller (wlc), published October 17, 2018. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.58%, the 48th percentile. No source names a fixed version.

References

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