# CVE-2026-63563: Misconfiguration in Sharp MFPs

> Attackers can access address book and document filing features without authentication on certain Sharp and Toshiba MFPs due to disabled user authentication in the initial configuration.

- **Severity:** Medium 6.9 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/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:** 3 Aug 2026
- **Updated:** 3 Aug 2026
- **Also known as:** GHSA-hj84-h226-g524

## What is CVE-2026-63563?

CVE-2026-63563 is a medium-severity vulnerability in Sharp MFPs, published on 3 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Sharp and Toshiba Tec MFPs (multifunction printers) for a certain market have been shipped with the user authentication feature disabled in the initial configuration. When used with the initial configuration, the address book editing and a range of features related to Document Filing can be accessed without user authentication.
Products intended for the Japanese market are not affected.

Weakness: CWE-1188 (Initialization of a Resource with an Insecure Default)

## Which versions are affected by CVE-2026-63563?


## How do I fix CVE-2026-63563?

No fix has been published for CVE-2026-63563 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-63563 being exploited?

There is no known exploitation of CVE-2026-63563 in the wild and no public exploit code.

Public exploit code:

- Unauthenticated Address Book Modification on Sharp MX/BP Multifunction Printers (github_poc): https://github.com/redr0nin/CVE-2026-63563

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-63563 and fix it if it is affected.

What it is: CVE-2026-63563 is a medium-severity vulnerability in Sharp MFPs, published on 3 Aug 2026. 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-2026-63563 in the wild and no public exploit code.

Affected product: Sharp MFPs. 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-2026-63563/ (Markdown: https://insights.sbomify.com/CVE-2026-63563/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-63563
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-63563
- OSV: https://osv.dev/vulnerability/CVE-2026-63563

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-63563/
Summaries are generated and may contain mistakes; the official description above is the record.