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Nanokvm CVE-2026-32296

| EUVDEUVD-2026-12610 HIGH
Missing Authentication for Critical Function (CWE-306)
2026-03-17 cisa-cg
8.2
CVSS 3.1 · NVD
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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata – not a confirmed exploit chain

  1. Access
    Send crafted HTTP request to Wi-Fi endpoint
  2. Exploit
    Modify Wi-Fi network configuration
  3. Execution
    Exhaust system memory
  4. Impact
    Terminate KVM process

Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A07:2025 - Authentication Failures
ASVS 5.0
V6 - Authentication Authentication required for critical functions
MITRE ATT&CK

1 technique across 1 tactic: Initial Access

The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up.

Exploitation Conditions

Sipeed NanoKVM before version 2.3.1 with Wi-Fi configuration endpoint exposed on network. No authentication required; default configuration vulnerable to remote unauthenticated exploitation.

Impact

The CVSS 3.1 score of 8.2 reflects high real-world risk with network-based attack vector (AV:N), low complexity (AC:L), and no privileges required (PR:N), enabling both integrity and availability impacts. The vulnerability allows unauthenticated remote exploitation, making it highly automatable and accessible to unsophisticated attackers. While EPSS and KEV data are not available, the combination of authentication bypass on a device managing critical infrastructure access, coupled with the straightforward exploitation path, makes this a priority for organizations using affected NanoKVM devices. The technical impact is significant as compromised KVM devices can provide attackers with console-level access to managed systems.

Exploit ScenarioDerived

An attacker on the same network as the NanoKVM device sends unauthenticated requests to the exposed Wi-Fi configuration endpoint, changing the device's wireless settings to connect to an attacker-controlled access point. Once connected to the malicious network, the attacker can intercept all KVM traffic, potentially capturing credentials and console access to managed servers. Alternatively, the attacker can craft malicious requests to exhaust system memory, causing the KVM process to crash and denying legitimate administrators remote access to critical systems.

This Week Schedule remediation this week. Why: HIGH severity (CVSS 7.0-8.9).
Patch available 0.1% exploitation probability (EPSS)

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AnalysisAIv1 – Mar 17, 2026

A critical authentication bypass vulnerability in Sipeed NanoKVM KVM-over-IP devices allows unauthenticated remote attackers to hijack Wi-Fi configurations or crash the device through memory exhaustion. The vulnerability affects NanoKVM versions before 2.3.1 and enables attackers with network access to redirect the device to attacker-controlled networks or cause denial of service. While not currently in CISA KEV, the issue has been analyzed by security researchers and a patch is available from the vendor.

RemediationAI

Upgrade Sipeed NanoKVM firmware to version 2.3.1 or later immediately, as documented in the vendor's changelog at https://github.com/sipeed/NanoKVM/blob/main/CHANGELOG.md#231-2025-12-26. Until patching is complete, isolate NanoKVM devices on dedicated management VLANs with strict firewall rules limiting access to authorized administrators only. Consider implementing network segmentation to prevent unauthorized access to the vulnerable Wi-Fi configuration endpoint and monitor for unexpected configuration changes or memory exhaustion indicators.

Affected VersionsENISA

NanoKVM 0 <2.3.1

Affected Packages

euvd nanokvm fix: 2.3.1

Source: OSV (Open Source Vulnerabilities)

Affects your stack

Affects 1 package in euvd

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

The vulnerability affects Sipeed NanoKVM devices (CPE: cpe:2.3:a:sipeed:nanokvm:*:*:*:*:*:*:*:*), which are KVM-over-IP solutions that provide remote access to servers and computers. The root cause is CWE-306 (Missing Authentication for Critical Function), where the Wi-Fi configuration endpoint lacks proper authentication checks before processing configuration changes. NanoKVM devices are particularly sensitive as they provide remote access to critical infrastructure, making Wi-Fi hijacking especially dangerous since it could redirect KVM traffic through attacker-controlled networks.

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Severity by source

NVD PRIMARY 8.2 HIGH
AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
Low
Availability
High

Lifecycle Timeline

2
Patch released
Mar 17, 2026 - 20:30 nvd
Patch available
CVE Published
Mar 17, 2026 - 17:19 nvd
HIGH 8.2

DescriptionCVE.org

Sipeed NanoKVM before 2.3.1 exposes a Wi-Fi configuration endpoint without proper security checks, allowing an unauthenticated attacker with network access to change the saved configured Wi-Fi network to one of the attacker's choosing, or craft a request to exhaust the system memory and terminate the KVM process.

Executive ViewAI

Why It Matters

Sipeed NanoKVM devices in your infrastructure face an authentication bypass vulnerability (CVE-2026-32296, CVSS 8.2) that allows unauthenticated attackers to hijack Wi-Fi configurations or crash devices remotely. Any organization running affected NanoKVM versions before 2.3.1 is at immediate risk of network compromise and operational disruption, particularly if these devices manage critical infrastructure or remote access.

Business Impact: High
Compensating Controls

Apply vendor patch. If immediate patching is not feasible, implement network segmentation by restricting NanoKVM devices to isolated VLANs with access controls, disable remote management features until patched, monitor device logs for suspicious authentication attempts, and enforce VPN-only access to device management interfaces.

Threat Intelligence Overview

EPSS Score
0.1%
Top 84% exploitable
Data Quality
6 sources
Confidence: High

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue
Severity HIGH
CISA KEV No
Public POC No
EPSS 0.1%
Patch available Yes
Active threat No
Deciding rule
HIGH severity (CVSS 7.0-8.9)
What every action level means
Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.
Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.
This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.
This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.
Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived
Scheduled
Exploitation· derived
None
System Exposure· derived
Open
Automatable· derived
Yes
Human Impact
High

Priority Score

41
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +41
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

Authentication bypass attacks exploit flaws in the verification mechanisms that control access to systems and applications.

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