# CVE-2017-16557: Privilege escalation in n/a

> Local attackers can escalate privileges in K7 Antivirus Premium by sending a crafted IOCTL request, requiring an upgrade to the latest version.

- **Severity:** High 7.0 (`CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H`)
- **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:** 16 Jan 2018
- **Updated:** 5 Aug 2024
- **Also known as:** GHSA-8xj9-5g45-r8jc

## What is CVE-2017-16557?

CVE-2017-16557 is a high-severity vulnerability in n/a, published on 16 Jan 2018. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

K7 Antivirus Premium before 15.1.0.53 allows local users to gain privileges by sending a specific IOCTL after setting the memory in a particular way.

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

## Which versions are affected by CVE-2017-16557?

It affects 5 products.


Products: K7computing Antivirus, K7computing Endpoint, K7computing Internet Security, K7computing Total Security, K7computing Ultimate Security.

## How do I fix CVE-2017-16557?

No fix has been published for CVE-2017-16557 yet. Limit exposure of the affected software until one is available.

## Is CVE-2017-16557 being exploited?

There is no known exploitation of CVE-2017-16557 in the wild and no public exploit code.

## Other vulnerabilities in n/a

- [CVE-2017-17699](https://insights.sbomify.com/CVE-2017-17699/): Null dereference in n/a (critical 9.8)
- [CVE-2017-17700](https://insights.sbomify.com/CVE-2017-17700/): Null dereference in n/a (critical 9.8)
- [CVE-2017-17701](https://insights.sbomify.com/CVE-2017-17701/): Null dereference in n/a (critical 9.8)
- [CVE-2017-17464](https://insights.sbomify.com/CVE-2017-17464/): Null dereference in n/a (critical 9.8)
- [CVE-2017-17465](https://insights.sbomify.com/CVE-2017-17465/): Null dereference in n/a (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2017-16557 and fix it if it is affected.

What it is: CVE-2017-16557 is a high-severity vulnerability in n/a, published on 16 Jan 2018. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2017-16557 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-2017-16557/ (Markdown: https://insights.sbomify.com/CVE-2017-16557/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2017-16557
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2017-16557
- OSV: https://osv.dev/vulnerability/CVE-2017-16557

---
From sbomify Insights: https://insights.sbomify.com/CVE-2017-16557/
Summaries are generated and may contain mistakes; the official description above is the record.