CVE-2019-9494
The implementations of SAE in hostapd and wpa_supplicant are vulnerable to side-channel attacks
- 5.9MediumCVSS base score
- 3.9%Exploitation in 30 daysEPSS · top 9.7% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
The implementations of SAE in hostapd and wpa_supplicant are vulnerable to side channel attacks as a result of observable timing differences and cache access patterns. An attacker may be able to gain leaked information from a side channel attack that can be used for full password recovery. Both hostapd with SAE support and wpa_supplicant with SAE support prior to and including version 2.7 are affected.
Timeline
ID reserved
By certcc
- 47 days later
· 47 days later
Published
- 5 years later
· 5 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 3.1 | Medium5.9 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N |
- EPSS (exploitation in 30 days)
- 3.9% · top 9.7% of all CVEs (10 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.9.
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/2019-1/ (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)
- EUVD EUVD-2019-18868 (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)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2019-9494)Record last updated .