# CVE-2021-28670: Missing authorization in n/a

> Unauthorized users can delete arbitrary files from the disk via the Scan To Mailbox feature on affected Xerox printers.

- **Severity:** Critical 9.1 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/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:** 29 Mar 2021
- **Updated:** 3 Aug 2024
- **Also known as:** GHSA-whpg-9xjj-m9hw

## What is CVE-2021-28670?

CVE-2021-28670 is a critical missing authorization vulnerability in n/a, published on 29 Mar 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Xerox AltaLink B8045/B8090 before 103.008.030.32000, C8030/C8035 before 103.001.030.32000, C8045/C8055 before 103.002.030.32000 and C8070 before 103.003.030.32000 allow unauthorized users, by leveraging the Scan To Mailbox feature, to delete arbitrary files from the disk.

## Which versions are affected by CVE-2021-28670?

It affects 10 products.


Products: Xerox Altalink B8045 Firmware, Xerox Altalink B8055 Firmware, Xerox Altalink B8065 Firmware, Xerox Altalink B8075 Firmware, Xerox Altalink B8090 Firmware, Xerox Altalink C8030 Firmware, Xerox Altalink C8035 Firmware, Xerox Altalink C8045 Firmware, Xerox Altalink C8055 Firmware, Xerox Altalink C8070 Firmware.

## How do I fix CVE-2021-28670?

No fix has been published for CVE-2021-28670 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-28670 being exploited?

There is no known exploitation of CVE-2021-28670 in the wild and no public exploit code.

## Other vulnerabilities in n/a

- [CVE-2021-28668](https://insights.sbomify.com/CVE-2021-28668/): SQL injection in n/a (critical 9.8)
- [CVE-2018-17172](https://insights.sbomify.com/CVE-2018-17172/): Command injection in n/a (critical 9.8)
- [CVE-2019-10881](https://insights.sbomify.com/CVE-2019-10881/): Default hidden Privileged Account Vulnerability in multiple XEROX devices (critical 9.4)
- [CVE-2019-18629](https://insights.sbomify.com/CVE-2019-18629/): Xerox AltaLink B8045/B8055/B8065/B8075/B8090 and C8030/C8035/C8045/C8055/C8070 multifunction printers with software releases before 101.00x. (high 8.1)
- [CVE-2021-28669](https://insights.sbomify.com/CVE-2021-28669/): Missing authorization in n/a (high 7.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-28670 and fix it if it is affected.

What it is: CVE-2021-28670 is a critical missing authorization vulnerability in n/a, published on 29 Mar 2021. 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-2021-28670 in the wild and no public exploit code.

Affected product: n/a. 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-2021-28670/ (Markdown: https://insights.sbomify.com/CVE-2021-28670/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-28670
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-28670
- OSV: https://osv.dev/vulnerability/CVE-2021-28670

---
From sbomify Insights: https://insights.sbomify.com/CVE-2021-28670/
Summaries are generated and may contain mistakes; the official description above is the record.