# CVE-2018-15395: Cisco Wireless LAN Controller Software Privilege Escalation Vulnerability

> An authenticated adjacent attacker can gain unauthorized privileged network access in Cisco TrustSec domains by exploiting dynamic Security Group Tag assignment during wireless roaming.

- **Severity:** Medium 5.4 (`CVSS:3.0/AV:A/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 17 Oct 2018
- **Updated:** 26 Nov 2024
- **Also known as:** GHSA-r7pm-6rfr-vfm2

## What is CVE-2018-15395?

CVE-2018-15395 is a medium-severity vulnerability in Cisco Wireless Lan Controller Software, published on 17 Oct 2018. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

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.

Weakness: CWE-284 (Improper Access Control)

## Which versions are affected by CVE-2018-15395?

It affects 1 product.


Products: Cisco Wireless Lan Controller Software.

## How do I fix CVE-2018-15395?

No fix has been published for CVE-2018-15395 yet. Limit exposure of the affected software until one is available.

## Is CVE-2018-15395 being exploited?

There is no known exploitation of CVE-2018-15395 in the wild and no public exploit code.

## Other vulnerabilities in Cisco Wireless Lan Controller Software

- [CVE-2007-2036](https://insights.sbomify.com/CVE-2007-2036/): Hardcoded credentials in n/a (critical 10.0)
- [CVE-2016-1363](https://insights.sbomify.com/CVE-2016-1363/): Memory corruption in n/a (critical 9.8)
- [CVE-2015-6314](https://insights.sbomify.com/CVE-2015-6314/): Auth bypass in n/a (critical 9.8)
- [CVE-2010-2842](https://insights.sbomify.com/CVE-2010-2842/): Privilege escalation in n/a (critical 9.0)
- [CVE-2010-2843](https://insights.sbomify.com/CVE-2010-2843/): Privilege escalation in n/a (critical 9.0)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2018-15395 and fix it if it is affected.

What it is: CVE-2018-15395 is a medium-severity vulnerability in Cisco Wireless Lan Controller Software, published on 17 Oct 2018. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2018-15395 in the wild and no public exploit code.

Affected product: Cisco Wireless Lan Controller Software. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2018-15395/ (Markdown: https://insights.sbomify.com/CVE-2018-15395/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2018-15395
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2018-15395
- OSV: https://osv.dev/vulnerability/CVE-2018-15395

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From sbomify Insights: https://insights.sbomify.com/CVE-2018-15395/
Summaries are generated and may contain mistakes; the official description above is the record.