# CVE-2023-53963: SOUND4 IMPACT/FIRST/PULSE/Eco v2.x Unauthenticated Remote Command Injection

> Remote attackers can execute arbitrary shell commands via the password parameter in login and index scripts, requiring immediate patching.

- **Severity:** Critical 9.3 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 22 Dec 2025
- **Updated:** 1 Oct 2026
- **Also known as:** GHSA-vw7m-92hg-3cxx

## What is CVE-2023-53963?

CVE-2023-53963 is a critical command injection vulnerability in Kantar Media BigVoice2, published on 22 Dec 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

SOUND4 IMPACT/FIRST/PULSE/Eco v2.x contains an unauthenticated OS command injection vulnerability that allows remote attackers to execute arbitrary shell commands through the 'password' parameter. Attackers can exploit the login.php and index.php scripts by injecting shell commands via the 'password' POST parameter to execute commands with web server privileges.

Weakness: CWE-78 (Improper Neutralization of Special Elements used in an OS Command)

## Which versions are affected by CVE-2023-53963?

It affects 9 products.


Products: Sound4 Big Voice2 Firmware, Sound4 Big Voice4 Firmware, Sound4 First Firmware, Sound4 Impact Eco Firmware, Sound4 Impact Firmware, Sound4 Pulse Eco Firmware, Sound4 Pulse Firmware, Sound4 Stream Extension, Sound4 Wm2 Firmware.

## How do I fix CVE-2023-53963?

No fix has been published for CVE-2023-53963 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-53963 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-53963 exists.

## Other vulnerabilities in Kantar Media BigVoice2

- [CVE-2022-50696](https://insights.sbomify.com/CVE-2022-50696/): SOUND4 IMPACT/FIRST/PULSE/Eco <=2.x Hardcoded Credentials Authentication Bypass (critical 9.3)
- [CVE-2022-50794](https://insights.sbomify.com/CVE-2022-50794/): SOUND4 IMPACT/FIRST/PULSE/Eco <=2.x Unauthenticated Command Injection via Username (critical 9.3)
- [CVE-2022-50796](https://insights.sbomify.com/CVE-2022-50796/): SOUND4 IMPACT/FIRST/PULSE/Eco <=2.x Unauthenticated Remote Code Execution via upload.cgi (critical 9.3)
- [CVE-2023-53955](https://insights.sbomify.com/CVE-2023-53955/): SOUND4 IMPACT/FIRST/PULSE/Eco v2.x Authorization Bypass via Insecure Object References (critical 9.3)
- [CVE-2023-53960](https://insights.sbomify.com/CVE-2023-53960/): SOUND4 IMPACT/FIRST/PULSE/Eco v2.x SQL Injection via Authentication Bypass (critical 9.3)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-53963 and fix it if it is affected.

What it is: CVE-2023-53963 is a critical command injection vulnerability in Kantar Media BigVoice2, published on 22 Dec 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-53963 exists.

Affected product: Kantar Media BigVoice2. 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-2023-53963/ (Markdown: https://insights.sbomify.com/CVE-2023-53963/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-53963
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-53963
- OSV: https://osv.dev/vulnerability/CVE-2023-53963

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From sbomify Insights: https://insights.sbomify.com/CVE-2023-53963/
Summaries are generated and may contain mistakes; the official description above is the record.