# CVE-2021-1562: Cisco BroadWorks Application Server Information Disclosure Vulnerability

> Authenticated attackers can access unauthorized call center data via improper input validation in the XSI-Actions interface.

- **Severity:** Medium 4.3 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N`)
- **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:** 8 Jul 2021
- **Updated:** 7 Nov 2024
- **Also known as:** GHSA-5m38-m947-59q9

## What is CVE-2021-1562?

CVE-2021-1562 is a medium-severity vulnerability in Cisco BroadWorks, published on 8 Jul 2021. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

A vulnerability in the XSI-Actions interface of Cisco BroadWorks Application Server could allow an authenticated, remote attacker to access sensitive information on an affected system. This vulnerability is due to improper input validation and authorization of specific commands that a user can execute within the XSI-Actions interface. An attacker could exploit this vulnerability by authenticating to an affected device and issuing a specific set of commands. A successful exploit could allow the attacker to join a Call Center instance and have calls that they do not have permissions to access distributed to them from the Call Center queue. At the time of publication, Cisco had not released updates that address this vulnerability for Cisco BroadWorks Application Server. However, firmware patches are available.

Weakness: CWE-20 (Improper Input Validation), CWE-200 (Exposure of Sensitive Information to an Unauthorized Actor)

## Which versions are affected by CVE-2021-1562?

It affects 1 product.


Products: Cisco Broadworks Application Server.

## How do I fix CVE-2021-1562?

No fix has been published for CVE-2021-1562 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-1562 being exploited?

There is no known exploitation of CVE-2021-1562 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-1562 and fix it if it is affected.

What it is: CVE-2021-1562 is a medium-severity vulnerability in Cisco BroadWorks, published on 8 Jul 2021. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2021-1562 in the wild and no public exploit code.

Affected product: Cisco BroadWorks. 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-2021-1562/ (Markdown: https://insights.sbomify.com/CVE-2021-1562/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-1562
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-1562
- OSV: https://osv.dev/vulnerability/CVE-2021-1562

---
From sbomify Insights: https://insights.sbomify.com/CVE-2021-1562/
Summaries are generated and may contain mistakes; the official description above is the record.