CVE-2019-11555: w1.fi Hostapd

Medium severity, CVSS 5.9. EPSS: 3.3% chance of exploitation in the next 30 days.

The EAP-pwd implementation in hostapd (EAP server) before 2.8 and wpa_supplicant (EAP peer) before 2.8 does not validate fragmentation reassembly state properly for a case where an unexpected fragment could be received. This could result in process termination due to a NULL pointer dereference (denial of service). This affects eap_server/eap_server_pwd.c and eap_peer/eap_pwd.c.

Affected products

• w1.fi Hostapd: before 2.8 (fixed in 2.8)
• w1.fi Wpa Supplicant: before 2.8 (fixed in 2.8)

Published 2019-04-26. Last modified 2026-06-17.