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Vulnerability record · CVE-2019-9498 · published 17 April 2019

CVE-2019-9498: W1.fi hostapd origin validation error vulnerability

WW1.Fi · Hostapd

The implementations of EAP-PWD in hostapd EAP Server, 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 be able to use invalid scalar/element values to complete authentication, gaining session key and network access without needing or learning the password. 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.

8.1 CVSS 3.1 High EPSS 2.2% · top 18.1% CWE-346 · Origin validation errorCWE-287 · Improper authentication
8.1CVSS 3.1 base score, v2 6.8
2.2%EPSS exploitation probability, 30 days
NoNot in CISA KEV
9Affected product versions listed by NVD
18References
17 Jun 2026Last modified by NVD

Description

The implementations of EAP-PWD in hostapd EAP Server, 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 be able to use invalid scalar/element values to complete authentication, gaining session key and network access without needing or learning the password. 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.

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

9 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://lists.opensuse.org/opensuse-security-announce/2020-02/msg00021.html Mailing ListThird Party Advisory
https://lists.debian.org/debian-lts-announce/2019/07/msg00030.html Mailing ListThird Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/56OBBOJJSKRTDGEXZOVFSTP
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SVMJOFEYBGXZLFF5IOLW67S
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TDOZGR3T7FVO5JSZWK2QPR7
https://seclists.org/bugtraq/2019/May/40 Mailing ListThird Party Advisory
https://security.FreeBSD.org/advisories/FreeBSD-SA-19:03.wpa.asc Third Party Advisory
https://w1.fi/security/2019-4/ PatchVendor Advisory
https://www.synology.com/security/advisory/Synology_SA_19_16 Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-02/msg00021.html Mailing ListThird Party Advisory
https://lists.debian.org/debian-lts-announce/2019/07/msg00030.html Mailing ListThird Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/56OBBOJJSKRTDGEXZOVFSTP
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SVMJOFEYBGXZLFF5IOLW67S
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TDOZGR3T7FVO5JSZWK2QPR7
https://seclists.org/bugtraq/2019/May/40 Mailing ListThird Party Advisory
https://security.FreeBSD.org/advisories/FreeBSD-SA-19:03.wpa.asc Third Party Advisory
https://w1.fi/security/2019-4/ PatchVendor Advisory
https://www.synology.com/security/advisory/Synology_SA_19_16 Third Party Advisory

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Source: NIST National Vulnerability Database (record CVE-2019-9498), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.