# CVE-2019-9499: Auth bypass in hostapd with EAP-pwd support

> Attackers can bypass authentication and control data connections in wpa_supplicant if EAP-PWD validation is missing due to library issues.

- **Severity:** High 8.1 (`CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 17 Apr 2019
- **Updated:** 4 Aug 2024
- **Also known as:** ALPINE-CVE-2019-9499, DEBIAN-CVE-2019-9499, GHSA-qppx-fffq-j22m, UBUNTU-CVE-2019-9499

## What is CVE-2019-9499?

CVE-2019-9499 is a high-severity authentication bypass vulnerability in Debian Debian Linux, published on 17 Apr 2019. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

The implementations of EAP-PWD in wpa_supplicant EAP Peer, when built against a crypto library missing explicit validation on imported elements, do not validate the scalar and element values in EAP-pwd-Commit. An attacker may complete authentication, session key and control of the data connection with a client. Both hostapd with SAE support and wpa_supplicant with SAE support prior to and including version 2.4 are affected. Both hostapd with EAP-pwd support and wpa_supplicant with EAP-pwd support prior to and including version 2.7 are affected.

Weakness: CWE-287 (Improper Authentication), CWE-346 (Origin Validation Error)

## Which versions are affected by CVE-2019-9499?

It affects 9 products.


Products: Debian Debian Linux, Fedoraproject Fedora, Freebsd Freebsd, Opensuse Backports Sle, Opensuse Leap, Synology Radius Server, Synology Router Manager, W1.fi Hostapd, W1.fi Wpa Supplicant.

## How do I fix CVE-2019-9499?

Upgrade to a fixed version.

## Is CVE-2019-9499 being exploited?

There is no known exploitation of CVE-2019-9499 in the wild and no public exploit code.

## Other vulnerabilities in Debian Debian Linux

- [CVE-2015-3306](https://insights.sbomify.com/CVE-2015-3306/): ProFTPD Improper Access Control (critical 10.0, exploited in the wild)
- [CVE-2025-49113](https://insights.sbomify.com/CVE-2025-49113/): RoundCube Webmail Deserialization of Untrusted Data (critical 9.9, exploited in the wild)
- [CVE-2026-24061](https://insights.sbomify.com/CVE-2026-24061/): GNU InetUtils Argument Injection (critical 9.8, exploited in the wild)
- [CVE-2025-39682](https://insights.sbomify.com/CVE-2025-39682/): Linux Kernel Improper Check for Unusual or Exceptional Conditions (critical 9.8, exploited in the wild)
- [CVE-2024-9680](https://insights.sbomify.com/CVE-2024-9680/): Mozilla Firefox Use-After-Free (critical 9.8, exploited in the wild)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2019-9499 and fix it if it is affected.

What it is: CVE-2019-9499 is a high-severity authentication bypass vulnerability in Debian Debian Linux, published on 17 Apr 2019. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2019-9499 in the wild and no public exploit code.

Affected product: Debian Debian Linux. 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-2019-9499/ (Markdown: https://insights.sbomify.com/CVE-2019-9499/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2019-9499
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2019-9499
- OSV: https://osv.dev/vulnerability/CVE-2019-9499

---
From sbomify Insights: https://insights.sbomify.com/CVE-2019-9499/
Summaries are generated and may contain mistakes; the official description above is the record.