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CVE-2019-9496
An invalid authentication sequence could result in the hostapd process terminating due to missing state validation steps
High7.5EPSS 4.6%
- Published
- Updated
- Reserved
- Assigned by
- certcc
Description
An invalid authentication sequence could result in the hostapd process terminating due to missing state validation steps when processing the SAE confirm message when in hostapd/AP mode. All version of hostapd with SAE support are vulnerable. An attacker may force the hostapd process to terminate, performing a denial of service attack. Both hostapd with SAE support and wpa_supplicant with SAE support prior to and including version 2.7 are affected.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 3.0 | High7.5 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 4.6% · top 8.3% of all CVEs (5 Nov 2026)
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The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.5.
Weakness
Affected products
Wi-Fi Alliance · hostapd with SAE support
- affected 2.7 – ≤ 2.7
Wi-Fi Alliance · wpa_supplicant with SAE support
- affected 2.7 – ≤ 2.7
References (9)
- https://w1.fi/security/2019-3/ (opens in a new tab)x_refsource_CONFIRMx_transferred
- https://www.synology.com/security/advisory/Synology_SA_19_16 (opens in a new tab)x_refsource_CONFIRMx_transferred
- FEDORA-2019-d03bae77f5 (opens in a new tab)vendor-advisoryx_refsource_FEDORAx_transferred
- FEDORA-2019-f409af9fbe (opens in a new tab)vendor-advisoryx_refsource_FEDORAx_transferred
- FEDORA-2019-eba1109acd (opens in a new tab)vendor-advisoryx_refsource_FEDORAx_transferred
- FreeBSD-SA-19:03 (opens in a new tab)vendor-advisoryx_refsource_FREEBSDx_transferred
- 20190515 FreeBSD Security Advisory FreeBSD-SA-19:03.wpa (opens in a new tab)mailing-listx_refsource_BUGTRAQx_transferred
- http://packetstormsecurity.com/files/152914/FreeBSD-Security-Advisory-FreeBSD-SA-19-03.wpa.html (opens in a new tab)x_refsource_MISCx_transferred
- openSUSE-SU-2020:0222 (opens in a new tab)vendor-advisoryx_refsource_SUSEx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
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[](https://trackcve.app/cve/CVE-2019-9496)Record last updated .