Medium severity · published Apr 17, 2019
CVE-2019-9494
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
5.9
CVSS
3.9%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
Attack vector
Network
Complexity
High
Privileges
None
User interaction
None
Confidentiality
High
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)3.9% · higher than 90% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
BS
Backports Sle · Opensuse
15.0; 15.0 · source: NVD
FE
Fedora · Fedoraproject
28; 29; 30 · source: NVD
FR
Freebsd · Freebsd
11.2; 11.2; 11.2; 11.2; 11.2; 11.2; +8 more · source: NVD
HO
Hostapd · W1.fi
through 2.7 · source: NVD
LE
Leap · Opensuse
15.1 · source: NVD
RS
Radius Server · Synology
3.0 · source: NVD
RM
Router Manager · Synology
before 1.2.3-8087 · source: NVD
WS
Wpa Supplicant · W1.fi
through 2.7 · source: NVD
In the news
VulnerabilityCritical
Siemens SIDIS Secured SmartPlug
View CSAF Summary SIDIS Secured SmartPlug before V7.26.0310 is affected by multiple vulnerabilities in the components OpenSSL, OpenSSH, and several other packages as described below. Siemens has released a new version of SIDIS Secured SmartPlug and recommends to update to the latest version. The following versions of Siemens SIDIS Secured SmartPlug are affected: SIDIS Secured SmartPlug vers:intdot/<7.26.0310  CVSS Vendor Equipment Vulnerabilities v3 9.8 Siemens Siemens SIDIS Secured SmartPlug Improper Enforcement of Message Integrity During Transmission in a Communication Channel, Reusing a Nonce, Key Pair in Encryption, Out-of-bounds Write, Buffer Copy without Checking Size of Input ('Classic Buffer Overflow'), Integer Overflow or Wraparound, Out-of-bounds Read, Covert Timing Channel, Detection of Error Condition Without Action, Incorrect Authorization Background Critical Infrastructure Sectors: Critical Manufacturing Countries/Areas Deployed: Worldwide Company Headquarters Location: Germany Vulnerabilities Expand All + CVE-2022-23303 The implementations of SAE in hostapd before 2.10 and wpa_supplicant before 2.10 are vulnerable to side channel attacks as a result of cache access patterns. NOTE: this issue exists because of an incomplete fix for CVE-2019-9494. View CVE Details Affected Products Siemens SIDIS Secured SmartPlug Vendor: Siemens Product Versio...
Jul 21, 2026·CISA Advisories