# CVE-2020-3530: Cisco IOS XR Authenticated User Privilege Escalation Vulnerability

> An authenticated local attacker can execute a restricted command to invalidate disk integrity and restart the device, bypassing administrative privilege requirements.

- **Severity:** High 8.4 (`CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:H`)
- **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:** 4 Sep 2020
- **Updated:** 13 Nov 2024
- **Also known as:** GHSA-582q-vw7h-43v8

## What is CVE-2020-3530?

CVE-2020-3530 is a high-severity vulnerability in Cisco Ios Xr, published on 4 Sep 2020. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

A vulnerability in task group assignment for a specific CLI command in Cisco IOS XR Software could allow an authenticated, local attacker to execute that command, even though administrative privileges should be required. The attacker must have valid credentials on the affected device. The vulnerability is due to incorrect mapping in the source code of task group assignments for a specific command. An attacker could exploit this vulnerability by issuing the command, which they should not be authorized to issue, on an affected device. A successful exploit could allow the attacker to invalidate the integrity of the disk and cause the device to restart. This vulnerability could allow a user with read permissions to issue a specific command that should require Administrator privileges.

Weakness: CWE-863 (Incorrect Authorization), CWE-264

## Which versions are affected by CVE-2020-3530?

It affects 1 product.


Products: Cisco Ios Xr.

## How do I fix CVE-2020-3530?

No fix has been published for CVE-2020-3530 yet. Limit exposure of the affected software until one is available.

## Is CVE-2020-3530 being exploited?

There is no known exploitation of CVE-2020-3530 in the wild and no public exploit code.

## Other vulnerabilities in Cisco Ios Xr

- [CVE-2020-3118](https://insights.sbomify.com/CVE-2020-3118/): Cisco IOS XR Software Discovery Protocol Format String (high 8.8, exploited in the wild)
- [CVE-2020-3569](https://insights.sbomify.com/CVE-2020-3569/): Cisco IOS XR Software DVMRP Memory Exhaustion (high 8.6, exploited in the wild)
- [CVE-2020-3566](https://insights.sbomify.com/CVE-2020-3566/): Cisco IOS XR Software DVMRP Memory Exhaustion (high 8.6, exploited in the wild)
- [CVE-2010-3035](https://insights.sbomify.com/CVE-2010-3035/): Cisco IOS XR Border Gateway Protocol (BGP) Denial-of-Service (high 7.5, exploited in the wild)
- [CVE-2022-20821](https://insights.sbomify.com/CVE-2022-20821/): Cisco IOS XR Open Port (medium 6.5, exploited in the wild)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2020-3530 and fix it if it is affected.

What it is: CVE-2020-3530 is a high-severity vulnerability in Cisco Ios Xr, published on 4 Sep 2020. 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-2020-3530 in the wild and no public exploit code.

Affected product: Cisco Ios Xr. 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-2020-3530/ (Markdown: https://insights.sbomify.com/CVE-2020-3530/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2020-3530
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2020-3530
- OSV: https://osv.dev/vulnerability/CVE-2020-3530

---
From sbomify Insights: https://insights.sbomify.com/CVE-2020-3530/
Summaries are generated and may contain mistakes; the official description above is the record.