CVE-2019-11555
5.9 · MEDIUMOverview
CVE-2019-11555 is a medium-severity vulnerability affecting w1.fi hostapd. It was published on April 26, 2019 and has a CVSS 3.0 base score of 5.9 (MEDIUM).
This vulnerability has a CVSS 3.0 base score of 5.9, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
Technical Description
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.
Remediation
Check the references section for vendor advisories and patches from w1.fi. Update hostapd to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| w1.fi | hostapd | >= 0, < 2.8 | Affected |
| w1.fi | wpa_supplicant | >= 0, < 2.8 | Affected |
References
Frequently Asked Questions
What is CVE-2019-11555?
CVE-2019-11555 is a medium-severity vulnerability affecting w1.fi hostapd. It was published on April 26, 2019 and has a CVSS 3.0 base score of 5.9 (MEDIUM).
How severe is CVE-2019-11555?
This vulnerability has a CVSS 3.0 base score of 5.9, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
How do I fix or remediate CVE-2019-11555?
Check the references section for vendor advisories and patches from w1.fi. Update hostapd to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2019-11555?
CyberStrike's AI-powered security agents can automatically detect CVE-2019-11555 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
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