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CVE-2019-9498

21
FAUCET Score

CVE-2019-9498 describes a critical vulnerability in the EAP-PWD implementation of hostapd and wpa_supplicant, affecting versions up to 2.4 (SAE) and 2.7 (EAP-PWD) respectively, when built against crypto libraries lacking explicit validation. An attacker can exploit this flaw by sending invalid scalar/element values during EAP-pwd-Commit, bypassing authentication to gain session keys and network access without knowing the password. With a CVSS score of 8.1 (HIGH), this vulnerability is remotely exploitable with high impact on confidentiality, integrity, and availability, though it has high attack complexity. There is no evidence of active exploitation, public exploit code, or significant community discussion, suggesting a low current threat level despite its severity.

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-2019-9498Important

wpa_supplicant: EAP-pwd server 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