# CVE-2021-34710: Cisco ATA 190 Series Analog Telephone Adapter Software Vulnerabilities

> Attackers can execute arbitrary commands or cause denial of service on Cisco ATA 190 devices via command injection vulnerabilities.

- **Severity:** High 8.8 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/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:** 6 Oct 2021
- **Updated:** 7 Nov 2024
- **Also known as:** GHSA-2gv4-4pqx-r2h9

## What is CVE-2021-34710?

CVE-2021-34710 is a high-severity command injection vulnerability in Cisco Analog Telephone Adaptor (ATA) Software, published on 6 Oct 2021. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

Multiple vulnerabilities in the Cisco ATA 190 Series Analog Telephone Adapter Software could allow an attacker to perform a command injection attack resulting in remote code execution or cause a denial of service (DoS) condition on an affected device. For more information about these vulnerabilities, see the Details section of this advisory.

Weakness: CWE-78 (Improper Neutralization of Special Elements used in an OS Command), CWE-770 (Allocation of Resources Without Limits or Throttling)

## Which versions are affected by CVE-2021-34710?

It affects 3 products.


Products: Cisco Ata 190 Firmware, Cisco Ata 191 Firmware, Cisco Ata 192 Firmware.

## How do I fix CVE-2021-34710?

No fix has been published for CVE-2021-34710 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-34710 being exploited?

There is no known exploitation of CVE-2021-34710 in the wild and no public exploit code.

## Other vulnerabilities in Cisco Analog Telephone Adaptor (ATA) Software

- [CVE-2021-34735](https://insights.sbomify.com/CVE-2021-34735/): Cisco ATA 190 Series Analog Telephone Adapter Software Vulnerabilities (high 8.8)
- [CVE-2022-20686](https://insights.sbomify.com/CVE-2022-20686/): Memory corruption in Cisco Analog Telephone Adaptor (ATA) Software (medium 5.3)
- [CVE-2022-20687](https://insights.sbomify.com/CVE-2022-20687/): Memory corruption in Cisco Analog Telephone Adaptor (ATA) Software (medium 5.3)
- [CVE-2022-20688](https://insights.sbomify.com/CVE-2022-20688/): Memory corruption in Cisco Analog Telephone Adaptor (ATA) Software (medium 5.3)
- [CVE-2022-20689](https://insights.sbomify.com/CVE-2022-20689/): Memory corruption in Cisco Analog Telephone Adaptor (ATA) Software (medium 5.3)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-34710 and fix it if it is affected.

What it is: CVE-2021-34710 is a high-severity command injection vulnerability in Cisco Analog Telephone Adaptor (ATA) Software, published on 6 Oct 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-2021-34710 in the wild and no public exploit code.

Affected product: Cisco Analog Telephone Adaptor (ATA) Software. 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-2021-34710/ (Markdown: https://insights.sbomify.com/CVE-2021-34710/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-34710
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-34710
- OSV: https://osv.dev/vulnerability/CVE-2021-34710

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From sbomify Insights: https://insights.sbomify.com/CVE-2021-34710/
Summaries are generated and may contain mistakes; the official description above is the record.