CVE-2015-5314 — The eap_pwd_process function in eap_server/eap_server_pwd.c in hostapd 2.x before 2.6 does not validate that the reassembly buffer is large enough for the final fragment when used with (1) an internal EAP server or (2) a RADIUS server and EAP-pwd is enabled in a runtime configuration, which allows remote attackers to cause a denial of service (process termination) via a large final fragment in an EAP-pwd message

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MEDIUM

The eap_pwd_process function in eap_server/eap_server_pwd.c in hostapd 2.x before 2.6 does not validate that the reassembly buffer is large enough for the final fragment when used with (1) an internal EAP server or (2) a RADIUS server and EAP-pwd is enabled in a runtime configuration, which allows remote attackers to cause a denial of service (process termination) via a large final fragment in an EAP-pwd message

Published Feb 21, 2018

5.9

MEDIUM

CVSS 3.0

EPSS 2.25%

Description

The eap_pwd_process function in eap_server/eap_server_pwd.c in hostapd 2.x before 2.6 does not validate that the reassembly buffer is large enough for the final fragment when used with (1) an internal EAP server or (2) a RADIUS server and EAP-pwd is enabled in a runtime configuration, which allows remote attackers to cause a denial of service (process termination) via a large final fragment in an EAP-pwd message.

Affected products

Remediation

No remediation recorded yet.

Metrics

2.25% 0.02255

Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.

EPSS probability 0.02255

Score over time

2022–2026

EPSS v2
EPSS v3
EPSS v4
EPSS v5

Percentile over time

EPSS v2
EPSS v3
EPSS v4
EPSS v5

Table of values (13 key points)

Flat stretches are collapsed; showing up to 120 newest points.

Date	Score	Percentile	Model
Oct 1, 2026	2.25% (0.02255)	82.32th	v5 (v2026.06.15)
Jun 15, 2026	2.33% (0.02334)	81.29th	v5 (v2026.06.15)
Mar 30, 2025	1.55% (0.01554)	79.73th	v4 (v2025.03.14)
Mar 29, 2025	3.55% (0.03548)	79.24th	v4 (v2025.03.14)
Mar 17, 2025	1.55% (0.01554)	80.17th	v4 (v2025.03.14)
Dec 12, 2024	1.67% (0.01673)	88.16th	v3 (v2023.03.01)
Sep 17, 2023	1.67% (0.01673)	86.15th	v3 (v2023.03.01)
Jul 15, 2023	1.19% (0.01186)	83.23th	v3 (v2023.03.01)
Mar 7, 2023	1.18% (0.01176)	82.79th	v3 (v2023.03.01)
Mar 6, 2023	1.21% (0.01213)	66.61th	v2 (v2022.01.01)
Feb 17, 2023	1.21% (0.01213)	66.22th	v2 (v2022.01.01)
Apr 1, 2022	1.21% (0.01213)	64.21th	v2 (v2022.01.01)
Feb 4, 2022	1.21% (0.01213)	40.54th	v2 (v2022.01.01)

Weaknesses (1)

CWE-119

Buffer Overflow

References (4)

http://w1.fi/security/2015-7/eap-pwd-missing-last-fragment-length-validation.txt
x_refsource_CONFIRMMitigationVendor Advisory
http://www.openwall.com/lists/oss-security/2015/11/10/10
mailing-listx_refsource_MLISTMailing ListMitigationPatchThird Party Advisory
http://www.ubuntu.com/usn/USN-2808-1
vendor-advisoryx_refsource_UBUNTUBroken Link
https://www.debian.org/security/2015/dsa-3397
vendor-advisoryx_refsource_DEBIANThird Party Advisory

Link	Providers	Tags
http://w1.fi/security/2015-7/eap-pwd-missing-last-fragment-length-validation.txt		x_refsource_CONFIRMMitigationVendor Advisory
http://www.openwall.com/lists/oss-security/2015/11/10/10		mailing-listx_refsource_MLISTMailing ListMitigationPatchThird Party Advisory
http://www.ubuntu.com/usn/USN-2808-1		vendor-advisoryx_refsource_UBUNTUBroken Link
https://www.debian.org/security/2015/dsa-3397		vendor-advisoryx_refsource_DEBIANThird Party Advisory

Change history (0)

No recorded changes yet.

Sources

CVE.org / MITRE

Status PUBLISHED

Assigner redhat

Published Feb 21, 2018

Updated Aug 6, 2024

Reserved Jul 1, 2015

Link CVE-2015-5314

CISA Vulnrichment

Updated n/a

NVD

Status Modified

Modified Jun 17, 2026

Link CVE-2015-5314

Red Hat

Severity n/a

Public date n/a

Links CVE-2015-5314