CVE-2015-4142

CVE-2015-4142 is a medium-severity vulnerability in W1.fi Wpa Supplicant with a CVSS 2.0 base score of 4.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-119.

Key facts

• Severity: Medium (CVSS 2.0 base score 4.3)
• EPSS exploit prediction: 4% (90th percentile)
• Actively exploited: Not listed in CISA KEV
• Weakness: CWE-119
• Affected product: W1.fi Wpa Supplicant
• Published: 2015-06-15
• Last modified: 2026-06-17

Description

Integer underflow in the WMM Action frame parser in hostapd 0.5.5 through 2.4 and wpa_supplicant 0.7.0 through 2.4, when used for AP mode MLME/SME functionality, allows remote attackers to cause a denial of service (crash) via a crafted frame, which triggers an out-of-bounds read.

Frequently asked questions

What is CVE-2015-4142?

Integer underflow in the WMM Action frame parser in hostapd 0.5.5 through 2.4 and wpa_supplicant 0.7.0 through 2.4, when used for AP mode MLME/SME functionality, allows remote attackers to cause a denial of service (crash) via a crafted frame, which triggers an out-of-bounds read.

How severe is CVE-2015-4142?

CVE-2015-4142 has a CVSS 2.0 base score of 4.3, rated medium severity.

Is CVE-2015-4142 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (90th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2015-4142?

CVE-2015-4142 primarily affects W1.fi Wpa Supplicant. In total, 28 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2015-4142?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2015-4142 published?

CVE-2015-4142 was published on 2015-06-15 and last updated on 2026-06-17.

References

• http://lists.fedoraproject.org/pipermail/package-announce/2015-November/171401.html
• http://lists.fedoraproject.org/pipermail/package-announce/2015-November/172608.html
• http://lists.fedoraproject.org/pipermail/package-announce/2015-November/172655.html
• http://lists.opensuse.org/opensuse-updates/2015-06/msg00019.html
• http://rhn.redhat.com/errata/RHSA-2015-1090.html
• http://rhn.redhat.com/errata/RHSA-2015-1439.html
• http://seclists.org/fulldisclosure/2022/May/34
• http://w1.fi/security/2015-3/integer-underflow-in-ap-mode-wmm-action-frame.txt
• http://www.debian.org/security/2015/dsa-3397
• http://www.openwall.com/lists/oss-security/2015/05/09/5
• http://www.openwall.com/lists/oss-security/2015/05/31/6
• http://www.securitytracker.com/id/1032625
• http://www.ubuntu.com/usn/USN-2650-1
• https://security.gentoo.org/glsa/201606-17
• https://support.apple.com/kb/HT213258

Affected products (28)

• cpe:2.3:a:w1.fi:wpa_supplicant:0.7.0:*:*:*:*:*:*:*
• cpe:2.3:a:w1.fi:wpa_supplicant:0.7.1:*:*:*:*:*:*:*
• cpe:2.3:a:w1.fi:wpa_supplicant:0.7.2:*:*:*:*:*:*:*
• cpe:2.3:a:w1.fi:wpa_supplicant:0.7.3:*:*:*:*:*:*:*
• cpe:2.3:a:w1.fi:wpa_supplicant:1.0:*:*:*:*:*:*:*
• cpe:2.3:a:w1.fi:wpa_supplicant:1.1:*:*:*:*:*:*:*
• cpe:2.3:a:w1.fi:wpa_supplicant:2.0:*:*:*:*:*:*:*
• cpe:2.3:a:w1.fi:wpa_supplicant:2.1:*:*:*:*:*:*:*
• cpe:2.3:a:w1.fi:wpa_supplicant:2.2:*:*:*:*:*:*:*
• cpe:2.3:a:w1.fi:wpa_supplicant:2.3:*:*:*:*:*:*:*
• cpe:2.3:a:w1.fi:wpa_supplicant:2.4:*:*:*:*:*:*:*
• cpe:2.3:o:redhat:enterprise_linux_desktop:6.0:*:*:*:*:*:*:*
• cpe:2.3:o:redhat:enterprise_linux_hpc_node:6.0:*:*:*:*:*:*:*
• cpe:2.3:o:redhat:enterprise_linux_server:6.0:*:*:*:*:*:*:*
• cpe:2.3:o:redhat:enterprise_linux_workstation:6.0:*:*:*:*:*:*:*
• cpe:2.3:a:w1.fi:hostapd:0.7.0:*:*:*:*:*:*:*
• cpe:2.3:a:w1.fi:hostapd:0.7.1:*:*:*:*:*:*:*
• cpe:2.3:a:w1.fi:hostapd:0.7.2:*:*:*:*:*:*:*
• cpe:2.3:a:w1.fi:hostapd:0.7.3:*:*:*:*:*:*:*
• cpe:2.3:a:w1.fi:hostapd:1.0:*:*:*:*:*:*:*
• cpe:2.3:a:w1.fi:hostapd:1.1:*:*:*:*:*:*:*
• cpe:2.3:a:w1.fi:hostapd:2.0:*:*:*:*:*:*:*
• cpe:2.3:a:w1.fi:hostapd:2.1:*:*:*:*:*:*:*
• cpe:2.3:a:w1.fi:hostapd:2.2:*:*:*:*:*:*:*
• cpe:2.3:a:w1.fi:hostapd:2.3:*:*:*:*:*:*:*
• cpe:2.3:a:w1.fi:hostapd:2.4:*:*:*:*:*:*:*
• cpe:2.3:o:opensuse:opensuse:13.1:*:*:*:*:*:*:*
• cpe:2.3:o:opensuse:opensuse:13.2:*:*:*:*:*:*:*

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• CVE-2019-9498 — High (CVSS 8.1): The implementations of EAP-PWD in hostapd EAP Server, when built against a crypto library missing explicit validation…
• CVE-2019-9497 — High (CVSS 8.1): The implementations of EAP-PWD in hostapd EAP Server and wpa_supplicant EAP Peer do not validate the scalar and element…

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