VDB-402490 · CVE-2026-78807 · Nessus 344905

wpa_supplicant up to 2.11 Driver Based PMKSA Selection Path wpa.c access control

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
7.8	$0-$5k	0.00

Summaryinfo

A vulnerability was found in wpa_supplicant up to 2.11 and classified as very critical. Affected by this vulnerability is an unknown functionality of the file wpa.c of the component Driver Based PMKSA Selection Path. Executing a manipulation can lead to access control. This vulnerability is registered as CVE-2026-78807. The attack needs to be launched locally. No exploit is available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability classified as very critical was found in wpa_supplicant up to 2.11. This vulnerability affects an unknown code of the file wpa.c of the component Driver Based PMKSA Selection Path. The manipulation with an unknown input leads to a access control vulnerability. The CWE definition for the vulnerability is CWE-284. The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

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

The advisory is available at w1.fi. This vulnerability was named CVE-2026-78807 since 08/25/2026. The exploitation appears to be easy. Local access is required to approach this attack. Technical details are known, but there is no available exploit. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 09/23/2026). This vulnerability is assigned to T1068 by the MITRE ATT&CK project.

The vulnerability scanner Nessus provides a plugin with the ID 344905 (Linux Distros Unpatched Vulnerability : CVE-2026-78807), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 2.12 eliminates this vulnerability.

The vulnerability is also documented in the databases at Tenable (344905) and CERT Bund (WID-SEC-2026-3343). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Affected

Open Source wpa_supplicant

Productinfo

Name

wpa_supplicant

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.0
VulDB Meta Temp Score: 7.8

VulDB Base Score: 8.8
VulDB Temp Score: 8.4
VulDB Vector: 🔒
VulDB Reliability: 🔍

ADP CISA Base Score: 7.1
ADP CISA Vector: 🔒

CVSSv2info

AV	AC	Au	C	I	A
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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Access control
CWE: CWE-284 / CWE-266
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: No

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Nessus ID: 344905
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2026-78807

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: wpa_supplicant 2.12

Timelineinfo

08/25/2026 CVE reserved
09/11/2026 +17 days Advisory disclosed
09/11/2026 +0 days VulDB entry created
09/23/2026 +12 days VulDB entry last update

Sourcesinfo

Advisory: w1.fi
Status: Confirmed

CNA: MITRE
CVE: CVE-2026-78807 (🔒)

GCVE (CVE): GCVE-0-2026-78807
GCVE (VulDB): GCVE-100-402490
CERT Bund: WID-SEC-2026-3343 - wpa_supplicant: Schwachstelle ermöglicht Umgehen von Sicherheitsvorkehrungen

Entryinfo

Created: 09/11/2026 20:18
Updated: 09/23/2026 07:47
Changes: 09/11/2026 20:18 (54), 09/12/2026 06:49 (2), 09/14/2026 18:48 (7), 09/23/2026 07:47 (11)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.