# CVE-2018-11993: Memory corruption in Snapdragon Wear

> A buffer overflow in Qualcomm Snapdragon Wear firmware allows attackers to execute arbitrary code or cause denial of service via MQTT requests.

- **Severity:** High 8.8 (`CVSS:3.0/AV:A/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:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 18 Jan 2019
- **Updated:** 5 Aug 2024
- **Also known as:** GHSA-wjr7-52j2-8j7p

## What is CVE-2018-11993?

CVE-2018-11993 is a high-severity memory corruption vulnerability in Qualcomm Mdm9206 Firmware, published on 18 Jan 2019. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

Improper check while accessing the local memory stack on MQTT connection request can lead to buffer overflow in snapdragon wear in versions MDM9206, MDM9607

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

## Which versions are affected by CVE-2018-11993?

It affects 2 products.


Products: Qualcomm Mdm9206 Firmware, Qualcomm Mdm9607 Firmware.

## How do I fix CVE-2018-11993?

No fix has been published for CVE-2018-11993 yet. Limit exposure of the affected software until one is available.

## Is CVE-2018-11993 being exploited?

There is no known exploitation of CVE-2018-11993 in the wild and no public exploit code.

## Other vulnerabilities in Qualcomm Mdm9206 Firmware

- [CVE-2016-10394](https://insights.sbomify.com/CVE-2016-10394/): Improper Authentication in Core (critical 9.8)
- [CVE-2019-10522](https://insights.sbomify.com/CVE-2019-10522/): Memory corruption in Snapdragon Auto, Snapdragon Compute, Snapdragon Consumer IOT, Snapdragon Industrial IOT, Snapdragon IoT, Snapdragon Mobile, Snapdragon Voice & Music, Snapdragon Wearables (critical 9.8)
- [CVE-2019-10528](https://insights.sbomify.com/CVE-2019-10528/): Use after free in Snapdragon Auto, Snapdragon Connectivity, Snapdragon Consumer IOT, Snapdragon Industrial IOT, Snapdragon Mobile, Snapdragon Voice & Music, Snapdragon Wearables (critical 9.8)
- [CVE-2019-10533](https://insights.sbomify.com/CVE-2019-10533/): Memory corruption in Snapdragon Auto, Snapdragon Compute, Snapdragon Consumer IOT, Snapdragon Industrial IOT, Snapdragon Mobile, Snapdragon Voice & Music, Snapdragon Wearables (critical 9.8)
- [CVE-2019-10534](https://insights.sbomify.com/CVE-2019-10534/): Null dereference in Snapdragon Auto, Snapdragon Compute, Snapdragon Consumer IOT, Snapdragon Industrial IOT, Snapdragon Mobile, Snapdragon Voice & Music, Snapdragon Wearables (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2018-11993 and fix it if it is affected.

What it is: CVE-2018-11993 is a high-severity memory corruption vulnerability in Qualcomm Mdm9206 Firmware, published on 18 Jan 2019. 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-2018-11993 in the wild and no public exploit code.

Affected product: Qualcomm Mdm9206 Firmware. 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-2018-11993/ (Markdown: https://insights.sbomify.com/CVE-2018-11993/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2018-11993
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2018-11993
- OSV: https://osv.dev/vulnerability/CVE-2018-11993

---
From sbomify Insights: https://insights.sbomify.com/CVE-2018-11993/
Summaries are generated and may contain mistakes; the official description above is the record.