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CVE-2015-5316

17
FAUCET Score

CVE-2015-5316 is a denial-of-service vulnerability affecting wpa_supplicant versions 2.x before 2.6, specifically when EAP-pwd is enabled. A remote attacker can trigger a NULL pointer dereference and crash the daemon by sending a crafted EAP-pwd Confirm message followed by an Identity exchange. This vulnerability has a CVSS score of 5.9 (Medium) due to its high attack complexity, but it can lead to a complete loss of availability for affected systems. There is no known active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
>= 2.0, < 2.6CPE matchmatch criteria
cpe:2.3:a:w1.fi:wpa_supplicant:*:*:*:*:*:*:*:*
8.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

5.9MEDIUM

CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
2.2
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
3.25%
Probability of exploitation in next 30 days
EPSS Percentile
87.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0325 is in the 81st percentile among its peer group of 19,958 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Advisories (1)

redhatCVE-2015-5316Low

wpa_supplicant: EAP-pwd peer error path failure on unexpected Confirm message

Nov 10, 2015

References

debian.org / security/2015/dsa-3397
Third Party Advisory
w1.fi / security/2015-8/eap-pwd-unexpected-confirm.txt
MitigationPatchVendor Advisory
openwall.com / lists/oss-security/2015/11/10/11
Mailing ListMitigationPatchThird Party Advisory
securityfocus.com / bid/77538
Third Party AdvisoryVDB Entry
ubuntu.com / usn/USN-2808-1
Broken Link