# CVE-2016-20055: IObit Advanced SystemCare 10.0.2 Unquoted Service Path Privilege Escalation

> Local attackers can escalate privileges to LocalSystem by placing a malicious executable in the unquoted service path of IObit Advanced SystemCare.

- **Severity:** High 8.5 (`CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 4 Apr 2026
- **Updated:** 6 Apr 2026
- **Also known as:** GHSA-9v4r-mwfh-7f37

## What is CVE-2016-20055?

CVE-2016-20055 is a high-severity vulnerability in IObit Advanced SystemCare, published on 4 Apr 2026. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

IObit Advanced SystemCare 10.0.2 contains an unquoted service path vulnerability in the AdvancedSystemCareService10 service that allows local attackers to escalate privileges. Attackers can place a malicious executable in the service path and trigger privilege escalation when the service restarts or the system reboots, executing code with LocalSystem privileges.

Weakness: CWE-428 (Unquoted Search Path or Element)

## Which versions are affected by CVE-2016-20055?

It affects 1 product.


Products: Iobit Advanced System Care.

## How do I fix CVE-2016-20055?

No fix has been published for CVE-2016-20055 yet. Limit exposure of the affected software until one is available.

## Is CVE-2016-20055 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2016-20055 exists.

## Other vulnerabilities in IObit Advanced SystemCare

- [CVE-2022-24139](https://insights.sbomify.com/CVE-2022-24139/): Privilege escalation in n/a (high 7.8)
- [CVE-2022-24140](https://insights.sbomify.com/CVE-2022-24140/): Code injection in n/a (medium 6.6)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2016-20055 and fix it if it is affected.

What it is: CVE-2016-20055 is a high-severity vulnerability in IObit Advanced SystemCare, published on 4 Apr 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2016-20055 exists.

Affected product: IObit Advanced SystemCare. 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-2016-20055/ (Markdown: https://insights.sbomify.com/CVE-2016-20055/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2016-20055
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2016-20055
- OSV: https://osv.dev/vulnerability/CVE-2016-20055

---
From sbomify Insights: https://insights.sbomify.com/CVE-2016-20055/
Summaries are generated and may contain mistakes; the official description above is the record.