# CVE-2023-26243: Information disclosure in n/a

> An attacker can extract AES keys from memory to create and install malicious firmware on the Hyundai IVI system, potentially gaining remote control.

- **Severity:** High 7.8 (`CVSS:3.1/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:** 27 Apr 2023
- **Updated:** 31 Jan 2025
- **Also known as:** GHSA-68w8-q32v-4g44

## What is CVE-2023-26243?

CVE-2023-26243 is a high-severity vulnerability in n/a, published on 27 Apr 2023. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

An issue was discovered in the Hyundai Gen5W_L in-vehicle infotainment system AE_E_PE_EUR.S5W_L001.001.211214. The decryption binary used to decrypt firmware files has an information leak that allows an attacker to read the AES key and initialization vector from memory. An attacker may exploit this to create custom firmware that may be installed in the IVI system. Then, an attacker may be able to install a backdoor in the IVI system that may allow him to control it, if it is connected to the Internet through Wi-Fi.

Weakness: CWE-269 (Improper Privilege Management), CWE-22 (Improper Limitation of a Pathname to a Restricted Directory)

## Which versions are affected by CVE-2023-26243?

It affects 1 product.


Products: Hyundai Gen5w L Firmware.

## How do I fix CVE-2023-26243?

No fix has been published for CVE-2023-26243 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-26243 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-26243 exists.

## Other vulnerabilities in n/a

- [CVE-2023-26244](https://insights.sbomify.com/CVE-2023-26244/): Security feature bypass in n/a (high 7.8)
- [CVE-2023-26245](https://insights.sbomify.com/CVE-2023-26245/): Security feature bypass in n/a (high 7.8)
- [CVE-2023-26246](https://insights.sbomify.com/CVE-2023-26246/): Security feature bypass in n/a (high 7.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-26243 and fix it if it is affected.

What it is: CVE-2023-26243 is a high-severity vulnerability in n/a, published on 27 Apr 2023. 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-2023-26243 exists.

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-2023-26243/ (Markdown: https://insights.sbomify.com/CVE-2023-26243/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-26243
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-26243
- OSV: https://osv.dev/vulnerability/CVE-2023-26243

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-26243/
Summaries are generated and may contain mistakes; the official description above is the record.