CVE-2019-9495

What it is

The implementations of EAP-PWD in hostapd and wpa_supplicant are vulnerable to side-channel attacks as a result of cache access patterns. All versions of hostapd and wpa_supplicant with EAP-PWD support are vulnerable. The ability to install and execute applications is necessary for a successful attack. Memory access patterns are visible in a shared cache. Weak passwords may be cracked. Versions of hostapd/wpa_supplicant 2.7 and newer, are not vulnerable to the timing attack described in CVE-2019-9494. Both hostapd with EAP-pwd support and wpa_supplicant with EAP-pwd support prior to and including version 2.7 are affected.

At a glance

Exploitability

Can be exploited over the network without logging in. Limited direct impact.

Exploit odds

3.5% chance of exploitation in the next 30 days (EPSS).

Fix

A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

1. 2019-04-17 14:29 UTC PublishedDisclosed publicly on CVE.org and NVD
2. 2026-06-17 02:43 UTC Last updatedMost recent change to the record

Why it ranks here

• Exploited in the wild: no, CISA does not list it.
• Exploit odds: 3.5% in the next 30 days (EPSS).
• Severity: 3.7 LOW (CVSS).
• Fix: a patch or advisory is linked.

Details

Published

2019-04-17 14:29 UTC

Last modified

2026-06-17 02:43 UTC

Exploit probability

3.5% · EPSS, next 30 days

Weakness

CWE-524

Record status

Modified

Affected

• w1.fi Hostapd ≤ 2.7
• w1.fi Wpa Supplicant ≤ 2.7
• Fedoraproject Fedora 28
• Fedoraproject Fedora 29
• Fedoraproject Fedora 30
• Opensuse Backports Sle 15.0
• Opensuse Leap 15.1
• Synology Radius Server 3.0

Attack profile CVSS 3.1 · 3.7

Attack vector

Network

Complexity

High

Privileges needed

None

User interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

None

Availability

None

Is it in your code?

Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.

Read https://cve-list.com/agent/cve/CVE-2019-9495.md and follow it. Check whether this project is affected by CVE-2019-9495. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.

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