Linux Kernel nl80211 wireless Vulnerability Rated 7.1 CVSS

Last refreshed2026-10-15

Status: UPDATED | Advisory ID: CVE-2026-43052

Key Details

CVE	CVE-2026-43052
CVSS Score / Version	7.1 (High) / CVSS v3.1
Updated	2026-10-15
CVSS Vector	`CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H`
CVSS Prose	attack vector is local; attack complexity is low; privileges required is low; user interaction is none; scope is unchanged; confidentiality impact is none; integrity impact is high; availability impact is high.
Affected products	Linux Kernel and Siemens SIMATIC S7-1500 TM MFP - GNU/Linux subsystem
Exploitation prediction (EPSS)	0.18% probability of exploitation in the next 30 days (7% percentile) -- FIRST.org's EPSS model.

Vendor	Product	Affected Versions	Patch Status
Linux	Linux Kernel
Siemens	SIMATIC S7-1500 TM MFP - GNU/Linux subsystem

Vendor

Product

Affected Versions

Patch Status

Linux

Linux Kernel

Siemens

SIMATIC S7-1500 TM MFP - GNU/Linux subsystem

Subsystems	Controllers & Field I/O, OT Supporting Infrastructure
Sectors	All Sectors

In the Linux kernel, the following vulnerability has been resolved:

wifi: mac80211: check tdls flag in ieee80211_tdls_oper

When NL80211_TDLS_ENABLE_LINK is called, the code only checks if the

station exists but not whether it is actually a TDLS station. This

allows the operation to proceed for non-TDLS stations, causing

unintended side effects like modifying channel context and HT

protection before failing.

Add a check for sta->sta.tdls early in the ENABLE_LINK case, before

any side effects occur, to ensure the operation is only allowed for

actual TDLS peers. (NVD)

Monitor Linux's and Siemens's web pages for any future patch releases.

Source	Reference
NVD	https://nvd.nist.gov/vuln/detail/CVE-2026-43052
CVE	https://www.cve.org/CVERecord?id=CVE-2026-43052

Source

Reference

NVD

CVE