# CVE-2020-3140: Cisco Prime License Manager Privilege Escalation Vulnerability

> An unauthenticated remote attacker with a valid username can gain administrative privileges via insufficient input validation in the web interface.

- **Severity:** Critical 9.8 (`CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 16 Jul 2020
- **Updated:** 15 Nov 2024
- **Also known as:** GHSA-875h-7jq2-c5fp

## What is CVE-2020-3140?

CVE-2020-3140 is a critical vulnerability in Cisco Prime License Manager, published on 16 Jul 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

A vulnerability in the web management interface of Cisco Prime License Manager (PLM) Software could allow an unauthenticated, remote attacker to gain unauthorized access to an affected device. The vulnerability is due to insufficient validation of user input on the web management interface. An attacker could exploit this vulnerability by submitting a malicious request to an affected system. An exploit could allow the attacker to gain administrative-level privileges on the system. The attacker needs a valid username to exploit this vulnerability.

Weakness: CWE-863 (Incorrect Authorization), CWE-255

## Which versions are affected by CVE-2020-3140?

It affects 1 product.


Products: Cisco Prime License Manager.

## How do I fix CVE-2020-3140?

No fix has been published for CVE-2020-3140 yet. Limit exposure of the affected software until one is available.

## Is CVE-2020-3140 being exploited?

There is no known exploitation of CVE-2020-3140 in the wild and no public exploit code.

## Other vulnerabilities in Cisco Prime License Manager

- [CVE-2018-15441](https://insights.sbomify.com/CVE-2018-15441/): Cisco Prime License Manager SQL Injection Vulnerability (critical 9.4)
- [CVE-2021-1362](https://insights.sbomify.com/CVE-2021-1362/): Cisco Unified Communications Products Remote Code Execution Vulnerability (high 8.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2020-3140 and fix it if it is affected.

What it is: CVE-2020-3140 is a critical vulnerability in Cisco Prime License Manager, published on 16 Jul 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2020-3140 in the wild and no public exploit code.

Affected product: Cisco Prime License Manager. 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-2020-3140/ (Markdown: https://insights.sbomify.com/CVE-2020-3140/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2020-3140
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2020-3140
- OSV: https://osv.dev/vulnerability/CVE-2020-3140

---
From sbomify Insights: https://insights.sbomify.com/CVE-2020-3140/
Summaries are generated and may contain mistakes; the official description above is the record.