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CVE-2019-9496

21
FAUCET Score

CVE-2019-9496 is a denial-of-service vulnerability affecting hostapd and wpa_supplicant versions with SAE support, including those in Fedora, where an invalid authentication sequence can terminate the hostapd process. This high-severity vulnerability (CVSS 7.5) allows unauthenticated attackers to remotely disrupt service with low complexity. While no public exploit code or active exploitation has been observed, and community discussion is minimal, the potential for a denial-of-service attack remains.

Impacted Technologies

VendorProductVersion(s)CPE
<= 2.7CPE matchmatch criteria
cpe:2.3:a:w1.fi:hostapd:*:*:*:*:*:*:*:*
<= 2.7CPE matchmatch criteria
cpe:2.3:a:w1.fi:wpa_supplicant:*:*:*:*:*:*:*:*
28CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:28:*:*:*:*:*:*:*
29CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:29:*:*:*:*:*:*:*
30CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:30:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

7.5HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
4.54%
Probability of exploitation in next 30 days
EPSS Percentile
90.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0454 is in the 83rd percentile among its peer group of 51,485 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, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Advisories (1)

redhatCVE-2019-9496Moderate

hostapd: SAE confirm missing state validation in hostapd/AP

Apr 10, 2019

References

lists.opensuse.org / opensuse-security-announce/2020-02/msg00021.html
packetstormsecurity.com / files/152914/FreeBSD-Security-Advisory-FreeBSD-SA-19-03.wpa.html
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/56OBBOJJSKRTDGEXZOVFSTP4HDSDBLAE
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/SVMJOFEYBGXZLFF5IOLW67SSOPKFEJP3
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/TDOZGR3T7FVO5JSZWK2QPR7AOFIEJTIZ
seclists.org / bugtraq/2019/May/40
security.freebsd.org / advisories/FreeBSD-SA-19:03.wpa.asc
w1.fi / security/2019-3
PatchVendor Advisory
synology.com / security/advisory/Synology_SA_19_16