# CVE-2018-15366: Use after free in Trend Micro Antivirus for Mac (Consumer)

> A local attacker can escalate privileges via a use-after-free vulnerability in Trend Micro Antivirus for Mac.

- **Severity:** High 7.8 (`CVSS:3.0/AV:L/AC:L/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:** 23 Oct 2018
- **Updated:** 5 Aug 2024
- **Also known as:** GHSA-jm8q-rhcf-w4hg

## What is CVE-2018-15366?

CVE-2018-15366 is a high-severity use after free vulnerability in Trend Micro Antivirus for Mac (Consumer), published on 23 Oct 2018. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

A UrlfWTPPagePtr KERedirect Use-After-Free Privilege Escalation vulnerability in Trend Micro Antivirus for Mac (Consumer) 7.0 (2017) and above could allow a local attacker to escalate privileges on vulnerable installations. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability.

Weakness: CWE-416 (Use After Free)

## Which versions are affected by CVE-2018-15366?

It affects 3 products.


Products: Trendmicro Antivirus for Mac 2017, Trendmicro Antivirus for Mac 2018, Trendmicro Antivirus for Mac 2019.

## How do I fix CVE-2018-15366?

No fix has been published for CVE-2018-15366 yet. Limit exposure of the affected software until one is available.

## Is CVE-2018-15366 being exploited?

There is no known exploitation of CVE-2018-15366 in the wild and no public exploit code.

## Other vulnerabilities in Trend Micro Antivirus for Mac (Consumer)

- [CVE-2018-15367](https://insights.sbomify.com/CVE-2018-15367/): Null dereference in Trend Micro Antivirus for Mac (Consumer) (high 7.8)
- [CVE-2018-18327](https://insights.sbomify.com/CVE-2018-18327/): Null dereference in Trend Micro Antivirus for Mac (Consumer) (high 7.8)
- [CVE-2018-18328](https://insights.sbomify.com/CVE-2018-18328/): Null dereference in Trend Micro Antivirus for Mac (Consumer) (high 7.8)
- [CVE-2018-18329](https://insights.sbomify.com/CVE-2018-18329/): Null dereference in Trend Micro Antivirus for Mac (Consumer) (high 7.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2018-15366 and fix it if it is affected.

What it is: CVE-2018-15366 is a high-severity use after free vulnerability in Trend Micro Antivirus for Mac (Consumer), published on 23 Oct 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-2018-15366 in the wild and no public exploit code.

Affected product: Trend Micro Antivirus for Mac (Consumer). 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-2018-15366/ (Markdown: https://insights.sbomify.com/CVE-2018-15366/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2018-15366
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2018-15366
- OSV: https://osv.dev/vulnerability/CVE-2018-15366

---
From sbomify Insights: https://insights.sbomify.com/CVE-2018-15366/
Summaries are generated and may contain mistakes; the official description above is the record.