CVE & CISA-KEV Catalog

CVE-2026-23811

MEDIUM
4.3
CVSS v3
NVD

Description

A vulnerability in the client isolation mechanism may allow an attacker to bypass Layer 2 (L2) communication restrictions between clients and redirect traffic at Layer 3 (L3). In addition to bypassing policy enforcement, successful exploitation - when combined with a port-stealing attack - may enable a bi-directional Machine-in-the-Middle (MitM) attack.

CWE-300

How to fix

No published remediation has been found for this vulnerability's affected products yet.

Mitigation guidance may be in the linked vendor advisories in the References section below.

CVSS v3 Vector

Exploitability

Attack VectorAdjacent
Attack ComplexityLow
Privileges RequiredNone
User InteractionNone
ScopeUnchanged

Impact

ConfidentialityLow
IntegrityNone
AvailabilityNone

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Exploit Intelligence

0.15%probability of exploitation in 30 days
5thpercentile

Low risk: more likely to be exploited than 5% of all known CVEs.

References

Vendor Advisory1
Embed a live status badge for CVE-2026-23811
CVE-2026-23811 severity badge

Markdown

[![CVE-2026-23811](https://tridentstack.com/cve/badge/CVE-2026-23811.svg)](https://tridentstack.com/cve/CVE-2026-23811)

HTML

<a href="https://tridentstack.com/cve/CVE-2026-23811"><img src="https://tridentstack.com/cve/badge/CVE-2026-23811.svg" alt="CVE-2026-23811"></a>

Find and fix vulnerabilities across your fleet

TridentStack Control continuously scans your Windows, macOS, and Linux fleet for known vulnerabilities, prioritizes them by severity and active exploitation, and patches them automatically.

Start free

This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-03-09.