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Vulnerability record · CVE-2015-4146 · published 15 June 2015

CVE-2015-4146: W1.fi wpa supplicant vulnerability

WW1.Fi · Wpa Supplicant

The EAP-pwd peer implementation in hostapd and wpa_supplicant 1.0 through 2.4 does not clear the L (Length) and M (More) flags before determining if a response should be fragmented, which allows remote attackers to cause a denial of service (crash) via a crafted message.

5.0 CVSS 2.0 Medium EPSS 3.5% · top 11.2%
5.0CVSS 2.0 base score
3.5%EPSS exploitation probability, 30 days
NoNot in CISA KEV
3Affected product versions listed by NVD
16References
17 Jun 2026Last modified by NVD

Description

The EAP-pwd peer implementation in hostapd and wpa_supplicant 1.0 through 2.4 does not clear the L (Length) and M (More) flags before determining if a response should be fragmented, which allows remote attackers to cause a denial of service (crash) via a crafted message.

AV:N/AC:L/Au:N/C:N/I:N/A:P

Affected products

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

References

LinkTags
http://lists.opensuse.org/opensuse-updates/2015-06/msg00019.html Third Party Advisory
http://w1.fi/security/2015-4/0005-EAP-pwd-peer-Fix-asymmetric-fragmentation-behavior.patch
http://w1.fi/security/2015-4/eap-pwd-missing-payload-length-validation.txt Vendor Advisory
http://www.debian.org/security/2015/dsa-3397
http://www.openwall.com/lists/oss-security/2015/05/09/6
http://www.openwall.com/lists/oss-security/2015/05/31/6
http://www.ubuntu.com/usn/USN-2650-1
https://security.gentoo.org/glsa/201606-17 Third Party Advisory
http://lists.opensuse.org/opensuse-updates/2015-06/msg00019.html Third Party Advisory
http://w1.fi/security/2015-4/0005-EAP-pwd-peer-Fix-asymmetric-fragmentation-behavior.patch
http://w1.fi/security/2015-4/eap-pwd-missing-payload-length-validation.txt Vendor Advisory
http://www.debian.org/security/2015/dsa-3397
http://www.openwall.com/lists/oss-security/2015/05/09/6
http://www.openwall.com/lists/oss-security/2015/05/31/6
http://www.ubuntu.com/usn/USN-2650-1
https://security.gentoo.org/glsa/201606-17 Third Party Advisory

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Source: NIST National Vulnerability Database (record CVE-2015-4146), CISA KEV, FIRST EPSS (scores of 2026-10-16). This page is refreshed as NVD updates the record.