CVE-2019-9495
The implementations of EAP-PWD in hostapd and wpa_supplicant are vulnerable to side-channel attacks as a result of cache access patterns.
Does this matter?
Lower severity and a low EPSS score (3.48%). Track it; it rarely justifies an emergency change on its own.
Description
The implementations of EAP-PWD in hostapd and wpa_supplicant are vulnerable to side-channel attacks as a result of cache access patterns. All versions of hostapd and wpa_supplicant with EAP-PWD support are vulnerable. The ability to install and execute applications is necessary for a successful attack. Memory access patterns are visible in a shared cache. Weak passwords may be cracked. Versions of hostapd/wpa_supplicant 2.7 and newer, are not vulnerable to the timing attack described in CVE-2019-9494. Both hostapd with EAP-pwd support and wpa_supplicant with EAP-pwd support prior to and including version 2.7 are affected.
- CVSS 3.1
- 3.7 LOWCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
- EPSS
- 3.48% probability · 89th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-524, CWE-203
- Affected
- w1.fi/hostapd · w1.fi/wpa supplicant · fedoraproject/fedora · opensuse/backports sle · opensuse/leap · synology/radius server · synology/router manager · debian/debian linux · freebsd/freebsd
- Source
- cret@cert.org
EPSS 3.5% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- http://lists.opensuse.org/opensuse-security-announce/2020-02/msg00021.htmlMailing List, Third Party Advisory
- http://packetstormsecurity.com/files/152914/FreeBSD-Security-Advisory-FreeBSD-SA-19-03.wpa.htmlThird Party Advisory, VDB Entry
- https://lists.debian.org/debian-lts-announce/2019/07/msg00030.htmlMailing List, Third Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/56OBBOJJSKRTDGEXZOVFSTP4HDSDBLAE/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SVMJOFEYBGXZLFF5IOLW67SSOPKFEJP3/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TDOZGR3T7FVO5JSZWK2QPR7AOFIEJTIZ/
- https://seclists.org/bugtraq/2019/May/40Mailing List, Third Party Advisory
- https://security.FreeBSD.org/advisories/FreeBSD-SA-19:03.wpa.ascThird Party Advisory
- https://w1.fi/security/2019-2/Patch, Vendor Advisory
- https://www.synology.com/security/advisory/Synology_SA_19_16Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2020-02/msg00021.htmlMailing List, Third Party Advisory
- http://packetstormsecurity.com/files/152914/FreeBSD-Security-Advisory-FreeBSD-SA-19-03.wpa.htmlThird Party Advisory, VDB Entry
- https://lists.debian.org/debian-lts-announce/2019/07/msg00030.htmlMailing List, Third Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/56OBBOJJSKRTDGEXZOVFSTP4HDSDBLAE/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SVMJOFEYBGXZLFF5IOLW67SSOPKFEJP3/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TDOZGR3T7FVO5JSZWK2QPR7AOFIEJTIZ/
- https://seclists.org/bugtraq/2019/May/40Mailing List, Third Party Advisory
- https://security.FreeBSD.org/advisories/FreeBSD-SA-19:03.wpa.ascThird Party Advisory
- https://w1.fi/security/2019-2/Patch, Vendor Advisory
- https://www.synology.com/security/advisory/Synology_SA_19_16Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.