# CVE-2024-42333: Heap buffer over-read

> An attacker can leak small amounts of Zabbix Server memory via an out-of-bounds read in the email library, potentially exposing sensitive data.

- **Severity:** Low 2.7 (`CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** An administrator
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 27 Nov 2024
- **Updated:** 3 Nov 2025
- **Also known as:** DEBIAN-CVE-2024-42333, GHSA-jm5w-96w4-8pcq, UBUNTU-CVE-2024-42333

## What is CVE-2024-42333?

CVE-2024-42333 is a low-severity vulnerability in Zabbix Zabbix, published on 27 Nov 2024. An attacker needs administrator access to exploit it, with no action from the victim.

### Official description

The researcher is showing that it is possible to leak a small amount of Zabbix Server memory using an out of bounds read in src/libs/zbxmedia/email.c

Weakness: CWE-126 (Buffer Over-read)

## Which versions are affected by CVE-2024-42333?

It affects 1 product.


Products: Zabbix Zabbix.

## How do I fix CVE-2024-42333?

Apply the vendor's patch.

## Is CVE-2024-42333 being exploited?

There is no known exploitation of CVE-2024-42333 in the wild and no public exploit code.

## Other vulnerabilities in Zabbix Zabbix

- [CVE-2022-23131](https://insights.sbomify.com/CVE-2022-23131/): Zabbix Frontend Authentication Bypass (critical 9.1, exploited in the wild)
- [CVE-2007-0640](https://insights.sbomify.com/CVE-2007-0640/): Memory corruption in n/a (critical 10.0)
- [CVE-2024-42327](https://insights.sbomify.com/CVE-2024-42327/): SQL injection in user.get API (critical 9.9)
- [CVE-2024-22116](https://insights.sbomify.com/CVE-2024-22116/): Remote code execution within ping script (critical 9.9)
- [CVE-2013-3738](https://insights.sbomify.com/CVE-2013-3738/): Code injection in n/a (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2024-42333 and fix it if it is affected.

What it is: CVE-2024-42333 is a low-severity vulnerability in Zabbix Zabbix, published on 27 Nov 2024. An attacker needs administrator access to exploit it, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2024-42333 in the wild and no public exploit code.

Affected product: Zabbix Zabbix. 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-2024-42333/ (Markdown: https://insights.sbomify.com/CVE-2024-42333/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2024-42333
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2024-42333
- OSV: https://osv.dev/vulnerability/CVE-2024-42333

---
From sbomify Insights: https://insights.sbomify.com/CVE-2024-42333/
Summaries are generated and may contain mistakes; the official description above is the record.