# CVE-2025-20192: Denial of service in Cisco IOS XE Software

> An authenticated remote attacker with valid IKEv1 credentials can cause a Cisco IOS XE device to reload by sending crafted IKEv1 messages.

- **Severity:** High 7.7 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 7 May 2025
- **Updated:** 7 May 2025
- **Also known as:** GHSA-ffcc-cqg6-6f7v

## What is CVE-2025-20192?

CVE-2025-20192 is a high-severity denial of service vulnerability in Cisco Ios Xe, published on 7 May 2025. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

A vulnerability in the Internet Key Exchange version 1 (IKEv1) implementation of Cisco IOS XE Software could allow an authenticated, remote attacker to cause a denial of service (DoS) condition. The attacker must have valid IKEv1 VPN credentials to exploit this vulnerability.

 This vulnerability is due to improper validation of IKEv1 phase 2 parameters before the IPsec security association creation request is handed off to the hardware cryptographic accelerator of an affected device. An attacker could exploit this vulnerability by sending crafted IKEv1 messages to the affected device. A successful exploit could allow the attacker to cause the device to reload.

Weakness: CWE-232 (Improper Handling of Undefined Values)

## Which versions are affected by CVE-2025-20192?

It affects 1 product.


Products: Cisco Ios Xe.

## How do I fix CVE-2025-20192?

No fix has been published for CVE-2025-20192 yet. Limit exposure of the affected software until one is available.

## Is CVE-2025-20192 being exploited?

There is no known exploitation of CVE-2025-20192 in the wild and no public exploit code.

## Other vulnerabilities in Cisco Ios Xe

- [CVE-2023-20198](https://insights.sbomify.com/CVE-2023-20198/): Cisco IOS XE Web UI Privilege Escalation (critical 10.0, exploited in the wild)
- [CVE-2018-0151](https://insights.sbomify.com/CVE-2018-0151/): Cisco IOS Software and Cisco IOS XE Software Quality of Service Remote Code Execution (critical 9.8, exploited in the wild)
- [CVE-2023-20273](https://insights.sbomify.com/CVE-2023-20273/): Cisco IOS XE Web UI Command Injection (high 7.2, exploited in the wild)
- [CVE-2025-20188](https://insights.sbomify.com/CVE-2025-20188/): Hardcoded credentials in Cisco IOS XE Software (critical 10.0)
- [CVE-2021-34770](https://insights.sbomify.com/CVE-2021-34770/): Cisco IOS XE Software for Catalyst 9000 Family Wireless Controllers CAPWAP Remote Code Execution Vulnerability (critical 10.0)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-20192 and fix it if it is affected.

What it is: CVE-2025-20192 is a high-severity denial of service vulnerability in Cisco Ios Xe, published on 7 May 2025. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2025-20192 in the wild and no public exploit code.

Affected product: Cisco Ios Xe. 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-2025-20192/ (Markdown: https://insights.sbomify.com/CVE-2025-20192/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-20192
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-20192
- OSV: https://osv.dev/vulnerability/CVE-2025-20192

---
From sbomify Insights: https://insights.sbomify.com/CVE-2025-20192/
Summaries are generated and may contain mistakes; the official description above is the record.