What is CVE-2015-4142?

CVE-2015-4142 is a vulnerability in W1.fi Hostapd, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. Published 2015-06-15.

Is CVE-2015-4142 known to be exploited?

2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Buffer overflow in W1.fi Hostapd

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.

Vulnerability class: Buffer Overflow

Published 2015-06-15 · last modified 2026-06-17.

CVSS v2 metric

CVSS v2 base score 4.3 (Medium). Vector: AV:N/AC:M/Au:N/C:N/I:N/A:P. This CVE predates CVSS v3 and has no v3 score from NVD.

EPSS exploit prediction

EPSS: 0.042 (90.6th percentile), scored 2026-10-02.

Low probability of exploitation in the next 30 days, but still tracked. 91st percentile — 90.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.042 · newest: 0.042 · change: -0.000

Affected products

W1.fi Hostapd — versions 0.7.0, 0.7.1, 0.7.2
W1.fi Wpa Supplicant — versions 0.7.0, 0.7.1, 0.7.2
openSUSE — versions 13.1, 13.2
Red Hat Enterprise Linux Desktop — versions 6.0
Red Hat Enterprise Linux Hpc Node — versions 6.0
Red Hat Enterprise Linux Server — versions 6.0
Red Hat Enterprise Linux Workstation — versions 6.0

Weakness classification (CWE)

CWE-119 — Improper Restriction of Operations within the Bounds of a Memory Buffer

Public proof-of-concept exploits

References

www.openwall.com/lists/oss-security/2015/05/31/6 (mailing-list)
lists.fedoraproject.org/pipermail/package-announce/2015-November/172608.html (vendor-advisory)
rhn.redhat.com/errata/RHSA-2015-1439.html (vendor-advisory)
lists.fedoraproject.org/pipermail/package-announce/2015-November/171401.html (vendor-advisory)
www.securitytracker.com/id/1032625 (vdb-entry)
w1.fi/security/2015-3/integer-underflow-in-ap-mode-wmm-action-frame.txt (Vendor Advisory)
www.openwall.com/lists/oss-security/2015/05/09/5 (mailing-list)
www.debian.org/security/2015/dsa-3397 (vendor-advisory)
security.gentoo.org/glsa/201606-17 (vendor-advisory, Third Party Advisory)
www.ubuntu.com/usn/USN-2650-1 (vendor-advisory)

Frequently asked questions

What is CVE-2015-4142?: CVE-2015-4142 is a vulnerability in W1.fi Hostapd, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. Published 2015-06-15.
Is CVE-2015-4142 known to be exploited?: 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.