# CVE-2026-60094: Vinchin Backup & Recovery 9.0.0.86562 Heap Buffer Overflow via agentlink_server

> Unauthenticated remote attackers can cause denial of service or potential code execution via heap buffer overflow in Vinchin Backup & Recovery agentlink_server.

- **Severity:** Medium 6.9 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:L/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:** 9 Jul 2026
- **Updated:** 14 Aug 2026
- **Also known as:** GHSA-m3jh-5jc7-f446

## What is CVE-2026-60094?

CVE-2026-60094 is a medium-severity memory corruption vulnerability in Vinchin Backup & Recovery 9.0, published on 9 Jul 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Vinchin Backup & Recovery through 9.0.0.86562 contains a heap buffer overflow vulnerability that allows unauthenticated remote attackers to cause process crash or memory corruption by sending a malformed TCP packet with an unchecked body_len field to the agentlink_server service. Attackers can craft a malicious packet that passes an attacker-controlled length directly to recv(), triggering a heap overflow of up to approximately 4 GiB and resulting in process crash or potential memory corruption.

Weakness: CWE-787 (Out-of-bounds Write)

## Which versions are affected by CVE-2026-60094?


## How do I fix CVE-2026-60094?

No fix has been published for CVE-2026-60094 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-60094 being exploited?

There is no known exploitation of CVE-2026-60094 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-60094 and fix it if it is affected.

What it is: CVE-2026-60094 is a medium-severity memory corruption vulnerability in Vinchin Backup & Recovery 9.0, published on 9 Jul 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-2026-60094 in the wild and no public exploit code.

Affected product: Vinchin Backup & Recovery 9.0. 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-2026-60094/ (Markdown: https://insights.sbomify.com/CVE-2026-60094/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-60094
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-60094
- OSV: https://osv.dev/vulnerability/CVE-2026-60094

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-60094/
Summaries are generated and may contain mistakes; the official description above is the record.