# CVE-2026-20115: Information disclosure in Cisco IOS XE Software

> Remote attackers can view sensitive device configuration data via on-path attacks due to insecure tunneling in Cisco IOS XE for Meraki.

- **Severity:** Medium 6.1 (`CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:N/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 25 Mar 2026
- **Updated:** 25 Mar 2026
- **Also known as:** GHSA-xm4h-9vf3-j26j

## What is CVE-2026-20115?

CVE-2026-20115 is a medium-severity vulnerability in Cisco IOS XE Software, published on 25 Mar 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

### Official description

A vulnerability in Cisco IOS XE Software for Cisco Meraki could allow a remote, unauthenticated attacker to view confidential device information.

 This vulnerability is due to a device configuration upload being performed over an insecure tunnel. An attacker could exploit this vulnerability by conducting an on-path attack between the affected device and the Cisco Meraki Dashboard. A successful exploit could allow the attacker to view sensitive device configuration information.

Weakness: CWE-319 (Cleartext Transmission of Sensitive Information)

## Which versions are affected by CVE-2026-20115?


## How do I fix CVE-2026-20115?

No fix has been published for CVE-2026-20115 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-20115 being exploited?

There is no known exploitation of CVE-2026-20115 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-20115 and fix it if it is affected.

What it is: CVE-2026-20115 is a medium-severity vulnerability in Cisco IOS XE Software, published on 25 Mar 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2026-20115 in the wild and no public exploit code.

Affected product: Cisco IOS XE 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-2026-20115/ (Markdown: https://insights.sbomify.com/CVE-2026-20115/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-20115
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-20115
- OSV: https://osv.dev/vulnerability/CVE-2026-20115

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-20115/
Summaries are generated and may contain mistakes; the official description above is the record.