What is the CVSS score of CVE-2026-0777?

CVE-2026-0777 has a CVSS 3.0 base score of 7.8 (High). CVSS vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H. EPSS exploitation probability: 0.1%.

How to fix or mitigate CVE-2026-0777?

Within 24 hours: Inventory all XMind installations across the organization and restrict usage to essential personnel only. Within 7 days: Disable XMind's attachment feature through group policy or equivalent controls, educate users not to open attachments from untrusted sources, and implement email filtering rules to block XMind files. Within 30 days: Monitor vendor advisories for patch availability, evaluate alternative tools without this vulnerability, and conduct a risk assessment to determine if XMind remains acceptable in the security posture.

CVE-2026-0777

HIGH

Product UI does not Warn User of Unsafe Actions (CWE-356)

2026-02-20 zdi-disclosures@trendmicro.com

RCE

7.8

CVSS 3.0 · NVD

View

Attack ChainAIDerived

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

Access

Craft malicious file with unsafe attachment
Exploit

User opens file in Xmind
Execution

Insufficient UI warning bypassed
Impact

Arbitrary code executes as user

Vulnerability Assessment

Weakness	CWE CWE-356 OWASP Top 10:2025 A06:2021 - Vulnerable and Outdated Components ASVS 5.0 V3 - Web Frontend Security Product UI inconsistency
Exploitation Conditions	User must manually open a malicious file or visit a malicious page in Xmind. Vulnerability exists in attachment handling when UI fails to warn of unsafe attachment actions. Requires local file access and user interaction to trigger code execution.
Impact	CVSS 7.8 (HIGH). Attack vector: Local. Complexity: Low. Privileges required: None. User interaction: Required. Exploitable via remote/network.
Exploit ScenarioDerived	A remote attacker could exploit this vulnerability to execute arbitrary code on affected installations of Xmind.

This Week Schedule remediation this week. Why: HIGH severity (CVSS 7.0-8.9).

No patch listed yet 0.1% exploitation probability (EPSS)

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AnalysisAIv1 – Mar 12, 2026

Xmind fails to display adequate security warnings when users open file attachments, enabling remote code execution with the privileges of the current user. An attacker can exploit this by tricking users into opening malicious files or visiting crafted pages, with the unsafe action proceeding without proper user notification. No patch is currently available.

Earlier versions of this analysis (1)

v1 Mar 12, 2026 - 22:04 CVSS 7.8

Xmind Attachment Insufficient UI Warning Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of Xmind. [CVSS 7.8 HIGH]

RemediationAI

Monitor vendor advisories for a patch.

Affected ProductsAI

Xmind Attachment Insufficient UI Warning Remote Code Execution Vulnerability. This vulnerability

Affects your stack

Find out whether the stacks and servers you run are on an affected version.

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

Technical ContextAI · show details

Xmind Attachment Insufficient UI Warning Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of Xmind. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.

The specific flaw exists within the handling of attachments. When opening an attachment, the user interface fails to warn the user of unsafe actions. An attacker can leverage this vuln

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Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

NVD PRIMARY 7.8 HIGH

AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector

Local

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

DescriptionCVE.org

The specific flaw exists within the handling of attachments. When opening an attachment, the user interface fails to warn the user of unsafe actions. An attacker can leverage this vulnerability to execute code in the context of current user. Was ZDI-CAN-26034.

Zero Day Initiative Advisories

ZDI-26-069 Xmind Attachment Insufficient UI Warning Remote Code Execution Vulnerability Feb 2026

Executive ViewAI

Why It Matters

A high-severity remote code execution vulnerability in XMind allows attackers to execute arbitrary code through insufficient UI warnings on file attachments. Organizations using XMind for collaborative work are at immediate risk of compromise if users are tricked into opening malicious attachments. This poses a significant threat to data confidentiality, integrity, and system availability across affected endpoints.

Business Impact: High

Compensating Controls

Disable attachment functionality in XMind through configuration management; restrict XMind to air-gapped or isolated networks; implement application whitelisting to prevent XMind execution in high-risk environments; enforce strict email gateway filtering for XMind file extensions (.xmind); deploy endpoint detection and response (EDR) tools to monitor for suspicious process execution from XMind; require user awareness training on attachment risks; consider restricting XMind usage to read-only or approval-based workflows pending patch availability.

Threat Intelligence Overview

EPSS Score

0.1%

Top 80% exploitable

Data Quality

3 sources

Confidence: Low

NVD

CVE.org

EPSS

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 No

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.