# CVE-2020-3232: Cisco ASR 920 Series Aggregation Services Router Model 12SZ-IM SNMP Denial of Service Vulnerability

> An authenticated remote attacker can cause a Cisco ASR 920 router to reload via SNMP, resulting in a denial of service.

- **Severity:** Medium 6.3 (`CVSS:3.0/AV:N/AC:H/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:** 3 Jun 2020
- **Updated:** 15 Nov 2024
- **Also known as:** GHSA-jg2q-fxw2-f6wc

## What is CVE-2020-3232?

CVE-2020-3232 is a medium-severity denial of service vulnerability in Cisco Ios Xe, published on 3 Jun 2020. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

A vulnerability in the Simple Network Management Protocol (SNMP) implementation in Cisco ASR 920 Series Aggregation Services Router model ASR920-12SZ-IM could allow an authenticated, remote attacker to cause the device to reload. The vulnerability is due to incorrect handling of data that is returned for Cisco Discovery Protocol queries to SNMP. An attacker could exploit this vulnerability by sending a request for Cisco Discovery Protocol information by using SNMP. An exploit could allow the attacker to cause the affected device to reload, resulting in a denial of service (DoS) condition.

Weakness: CWE-19

## Which versions are affected by CVE-2020-3232?

It affects 1 product.


Products: Cisco Ios Xe.

## How do I fix CVE-2020-3232?

No fix has been published for CVE-2020-3232 yet. Limit exposure of the affected software until one is available.

## Is CVE-2020-3232 being exploited?

There is no known exploitation of CVE-2020-3232 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-2020-3232 and fix it if it is affected.

What it is: CVE-2020-3232 is a medium-severity denial of service vulnerability in Cisco Ios Xe, published on 3 Jun 2020. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2020-3232 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-2020-3232/ (Markdown: https://insights.sbomify.com/CVE-2020-3232/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2020-3232
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2020-3232
- OSV: https://osv.dev/vulnerability/CVE-2020-3232

---
From sbomify Insights: https://insights.sbomify.com/CVE-2020-3232/
Summaries are generated and may contain mistakes; the official description above is the record.