# CVE-2024-1243: Remote code execution and local privilege escalation in Wazuh Windows agent via NetNTLMv2 hash theft

> Attackers can steal NetNTLMv2 hashes via malicious UNC paths, enabling remote code execution and privilege escalation to SYSTEM.

- **Severity:** Critical 9.5 (`CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 11 Jun 2025
- **Updated:** 11 Jun 2025
- **Also known as:** GHSA-3crh-39qv-fxj7

## What is CVE-2024-1243?

CVE-2024-1243 is a critical vulnerability in Wazuh Wazuh, published on 11 Jun 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Improper input validation in the Wazuh agent for Windows prior to version 4.8.0 allows an attacker with control over the Wazuh server or agent key to configure the agent to connect to a malicious UNC path. This results in the leakage of the machine account NetNTLMv2 hash, which can be relayed for remote code execution or used to escalate privileges to SYSTEM via AD CS certificate forging and other similar attacks.

Weakness: CWE-73 (External Control of File Name or Path), CWE-20 (Improper Input Validation)

## Which versions are affected by CVE-2024-1243?

It affects 1 product.


Products: Wazuh Wazuh.

## How do I fix CVE-2024-1243?

No fix has been published for CVE-2024-1243 yet. Limit exposure of the affected software until one is available.

## Is CVE-2024-1243 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2024-1243 exists.

## Other vulnerabilities in Wazuh Wazuh

- [CVE-2025-24016](https://insights.sbomify.com/CVE-2025-24016/): Wazuh Server Deserialization of Untrusted Data (critical 9.9, exploited in the wild)
- [CVE-2024-32038](https://insights.sbomify.com/CVE-2024-32038/): Wazuh Analysis Engine Event Decoder Heap-based Buffer Overflow Remote Code Execution Vulnerability (critical 9.8)
- [CVE-2021-44079](https://insights.sbomify.com/CVE-2021-44079/): Command injection in n/a (critical 9.8)
- [CVE-2026-61800](https://insights.sbomify.com/CVE-2026-61800/): Wazuh cluster worker file sync allows arbitrary file write under /var/ossec (incomplete fix for CVE-2026-30893) (critical 9.1)
- [CVE-2026-48024](https://insights.sbomify.com/CVE-2026-48024/): Wazuh: merged-file header path traversal in cluster sync allows arbitrary file write under WAZUH_PATH in Wazuh manager (critical 9.1)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2024-1243 and fix it if it is affected.

What it is: CVE-2024-1243 is a critical vulnerability in Wazuh Wazuh, published on 11 Jun 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2024-1243 exists.

Affected product: Wazuh Wazuh. 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-2024-1243/ (Markdown: https://insights.sbomify.com/CVE-2024-1243/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2024-1243
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2024-1243
- OSV: https://osv.dev/vulnerability/CVE-2024-1243

---
From sbomify Insights: https://insights.sbomify.com/CVE-2024-1243/
Summaries are generated and may contain mistakes; the official description above is the record.