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CVE-2019-9499

21
FAUCET Score

CVE-2019-9499 is a critical vulnerability affecting the EAP-PWD implementations in wpa_supplicant and hostapd versions up to 2.7, and SAE support in versions up to 2.4, when built against crypto libraries lacking explicit validation. This flaw allows an unauthenticated attacker to bypass authentication and gain full control over the data connection by manipulating scalar and element values in EAP-pwd-Commit. Rated 8.1 HIGH on the CVSS scale, this vulnerability carries a high impact on confidentiality, integrity, and availability, despite requiring high attack complexity. There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 2.4CPE matchmatch criteria
cpe:2.3:a:w1.fi:hostapd:*:*:*:*:*:*:*:*
>= 2.5, <= 2.7CPE matchmatch criteria
cpe:2.3:a:w1.fi:hostapd:*:*:*:*:*:*:*:*
<= 2.4CPE matchmatch criteria
cpe:2.3:a:w1.fi:wpa_supplicant:*:*:*:*:*:*:*:*
>= 2.5, <= 2.7CPE matchmatch criteria
cpe:2.3:a:w1.fi:wpa_supplicant:*:*:*:*:*:*:*:*
28CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:28:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

8.1HIGH

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.2
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
2.21%
Probability of exploitation in next 30 days
EPSS Percentile
80.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0221 is in the 38th percentile among its peer group of 8,920 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.2 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-2019-9499Important

wpa_supplicant: EAP-pwd peer missing commit validation for scalar/element

Apr 10, 2019

References

lists.opensuse.org / opensuse-security-announce/2020-02/msg00021.html
Mailing ListThird Party Advisory
lists.debian.org / debian-lts-announce/2019/07/msg00030.html
Mailing ListThird Party Advisory
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
Mailing ListThird Party Advisory
security.freebsd.org / advisories/FreeBSD-SA-19:03.wpa.asc
Third Party Advisory
w1.fi / security/2019-4
PatchVendor Advisory
synology.com / security/advisory/Synology_SA_19_16
Third Party Advisory