Client Isolation Bypass via GTK Manipulation

published 2026-03-04 8 mo ago modified 2026-06-17 4 mo ago also EUVD-2026-9414

cvss: 5.4; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.3%; EPSS 0.3% chance of exploitation in 30 days, percentile 21%
public exploits: 0; none known

A vulnerability has been identified in a standardized wireless roaming protocol that could enable a malicious actor to install an attacker-controlled Group Temporal Key (GTK) on a client device. Successful exploitation of this vulnerability could allow a remote malicious actor to perform unauthorized frame injection, bypass client isolation, interfere with cross-client traffic, and compromise network segmentation, integrity, and confidentiality.

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: partial
Assessed: 8 mo ago (2026-03-04)

Exploit prediction

0.29% chance of exploitation in the next 30 days, higher than 21% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.1	5.4	CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
NVD	3.1	8.1	CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Affected products

Hewlett Packard Enterprise (HPE) HPE Aruba Networking Wireless Operating System (AOS-10 & AOS-8)

Classification

Weakness

CWE-94 Improper Control of Generation of Code

References

support.hpe.com /hpesc/public/docDisplay?docId=hpesbnw05026en_us&docLocale=en_US
vendor-advisory

Sources

CVE List CVE-2026-23808
NVD CVE-2026-23808

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Summary