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Fencer Vulns
critical 9.8

CVE-2022-23304 json

The implementations of EAP-pwd in hostapd before 2.10 and wpa_supplicant before 2.10 are vulnerable to side-channel attacks as a result of…

published 2022-01-17 4 y ago modified 2026-07-14 3 mo ago also EUVD-2022-28389

cvss
9.8
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.9%
EPSS 1.9% chance of exploitation in 30 days, percentile 79%
public exploits
0
none known

Summary

The implementations of EAP-pwd 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-2019-9495.

Patch / fix

  • Siemens SIDIS Secured SmartPlug V7.26.0310
  • wpa Debian 14, Debian 13, Debian 12 2:2.10-1

debian advisories DEBIAN-CVE-2022-23304

  • wpa Ubuntu 20.04 LTS 2:2.9-1ubuntu4.6

ubuntu advisories UBUNTU-CVE-2022-23304

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • wpa_supplicant SLES for SAP 12 SP4, SLES for SAP 12 SP3, SLES 12 SP4-LTSS +8 more 2.9-15.22.1
  • wpa_supplicant SLES 15 SP2-BCL, SLES 15 SP1-BCL, SLE Real Time 15 SP2 +21 more 2.9-4.33.1
  • wpa_supplicant SLES for SAP 12 SP5, SLES 12 SP5 2.9-23.15.1

suse advisories SUSE-SU-2022:1853-1SUSE-SU-2022:0716-2SUSE-SU-2022:0716-1SUSE-SU-2022:0504-1

  • wpa_supplicant openSUSE Leap 15.3 2.9-4.33.1

opensuse advisories openSUSE-SU-2022:0716-1

  • hostapd Alpine 3.14, Alpine 3.13, Alpine 3.12 2.9-r4
  • hostapd Alpine 3.24, Alpine 3.23, Alpine 3.22 +7 more 2.10-r0

alpine advisories ALPINE-CVE-2022-23304

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • wpa_supplicant CBL-Mariner 2.0 2.10-1

azure linux advisories AZL-7748

Azure Linux vulnerability data, Copyright (c) Microsoft Corporation, from https://github.com/microsoft/AzureLinuxVulnerabilityData via OSV, under the MIT licence; changed: normalised to fixed package versions per release. MIT

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2022-23304 updated cvss 7.0

wpa_supplicant: EAP-pwd side-channel attacks as a result of cache access patterns

  • Red Hat Enterprise Linux 6 wpa_supplicant
    affected: no fix planned “Out of support scope”
  • Red Hat Enterprise Linux 7 wpa_supplicant Red Hat Enterprise Linux 8 wpa_supplicant Red Hat Enterprise Linux 9 wpa_supplicant
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

cisa ICSA-26-202-04 updated cvss 7.0

Siemens SIDIS Secured SmartPlug

  • Siemens SIDIS Secured SmartPlug < 7.26.0310
    affected: fixed in V7.26.0310

Facts from CISA's republication of the vendor's own advisory (CSAF); the linked advisory is the authoritative source. CISA notification · csaf

Exploit prediction

1.91% chance of exploitation in the next 30 days, higher than 79% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 6.8 AV:N/AC:M/Au:N/C:P/I:P/A:P

Affected products

  • Siemens SIDIS Secured SmartPlug

Classification

Weakness

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.