CVE-2026-78807

An issue in wpa_supplicant all versions before v.2.12 allows a local attacker to bypass proper network context and AKMP matching for PMKSA caching via missing validation in the driver based PMKSA selection path in wpa.c

CVE-2026-78807 is fixed in 2 products on 1 platform, first by DEBIAN-CVE-2026-78807, released September 11, 2026. It is not reported as exploited. Patch Radar priority: High.

High

CVSS

7.1

Important

Exploitation

None reported

No vendor assessment

CISA KEV

Not listed

Not in the Known Exploited Vulnerabilities catalog

EPSS

0.0008

0th percentile

missing validation in driver-based PMKSA selection within wpa_supplicant can allow local security

Where it's fixed

Product	Fixed in	Fix	Released
Linux
wpa · Debian 14	2:2.11-4	DEBIAN-CVE-2026-78807	Sep 11, 2026
wpa_supplicant · opensuse-leap 16.0	2.11-160000.5.1	OPENSUSE-SU-2026:22022-1	Oct 5, 2026
wpa_supplicant · sles 15.6	2.10-150600.7.11.1	SUSE-SU-2026:4492-1	Oct 5, 2026
wpa_supplicant · sles 15.7	2.11-150700.3.6.1	SUSE-SU-2026:4588-1	Nov 7, 2026
wpa_supplicant · sles 16.0	2.11-160000.5.1	SUSE-SU-2026:24144-1	Oct 5, 2026

Details

Published
September 11, 2026
Weakness
Origin Validation Error
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
Vendor advisory
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-78807

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