# CVE-2025-12686: Memory corruption in BeeStation OS

> Remote attackers can execute arbitrary code via a buffer overflow in the AdminCenter component of Synology BeeStation OS.

- **Severity:** Critical 9.8 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/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:** 27 May 2026
- **Updated:** 27 May 2026
- **Also known as:** GHSA-9f49-q57w-cw53

## What is CVE-2025-12686?

CVE-2025-12686 is a critical memory corruption vulnerability in Synology BeeStation OS, published on 27 May 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Buffer copy without checking size of input ('Classic Buffer Overflow') vulnerability in AdminCenter in Synology BeeStation OS before 1.3.2-65648 allows remote attackers to execute arbitrary code via unspecified vectors.

Weakness: CWE-120 (Buffer Copy without Checking Size of Input)

## Which versions are affected by CVE-2025-12686?

It affects 1 product.


Products: Synology Beestation Os.

## How do I fix CVE-2025-12686?

No fix has been published for CVE-2025-12686 yet. Limit exposure of the affected software until one is available.

## Is CVE-2025-12686 being exploited?

There is no known exploitation of CVE-2025-12686 in the wild and no public exploit code.

## Other vulnerabilities in Synology BeeStation OS

- [CVE-2024-10441](https://insights.sbomify.com/CVE-2024-10441/): Code injection in BeeStation OS (BSM) (critical 9.8)
- [CVE-2024-50629](https://insights.sbomify.com/CVE-2024-50629/): Information disclosure in BeeStation OS (BSM) (medium 5.3)
- [CVE-2024-10445](https://insights.sbomify.com/CVE-2024-10445/): Security feature bypass in BeeStation OS (BSM) (medium 4.3)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-12686 and fix it if it is affected.

What it is: CVE-2025-12686 is a critical memory corruption vulnerability in Synology BeeStation OS, published on 27 May 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-2025-12686 in the wild and no public exploit code.

Affected product: Synology BeeStation OS. 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-2025-12686/ (Markdown: https://insights.sbomify.com/CVE-2025-12686/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-12686
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-12686
- OSV: https://osv.dev/vulnerability/CVE-2025-12686

---
From sbomify Insights: https://insights.sbomify.com/CVE-2025-12686/
Summaries are generated and may contain mistakes; the official description above is the record.