CVE-2026-0777
CVE-2026-0777 is a high-severity vulnerability with a CVSS 3.x base score of 7.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-356.
Key facts
- Severity: High (CVSS 3.x base score 7.8)
- EPSS exploit prediction: 0% (26th percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2026-7779
- Weakness: CWE-356
- Published:
- Last modified:
Description
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 vulnerability to execute code in the context of current user. Was ZDI-CAN-26034.
Frequently asked questions
- What is CVE-2026-0777?
- 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 vulnerability to execute code in the context of current user. Was ZDI-CAN-26034.
- How severe is CVE-2026-0777?
- CVE-2026-0777 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2026-0777 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (26th percentile), an estimate of the probability of exploitation in the next 30 days.
- How do I fix CVE-2026-0777?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
- Does CVE-2026-0777 have an EU (EUVD) identifier?
- Yes. CVE-2026-0777 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-7779.
- When was CVE-2026-0777 published?
- CVE-2026-0777 was published on 2026-02-20 and last updated on 2026-06-17.
References
Other CWE-356 vulnerabilities
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- CVE-2019-6737 — High (CVSS 8.8): This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Bitdefender SafePay…
- CVE-2025-3909 — High (CVSS 8.1): Thunderbird's handling of the X-Mozilla-External-Attachment-URL header can be exploited to execute JavaScript in the…
- CVE-2025-3839 — High (CVSS 8.0): A flaw was found in Epiphany, a tool that allows websites to open external URL handler applications with minimal user…
- CVE-2025-14417 — High (CVSS 7.8): pdfforge PDF Architect Launch Insufficient UI Warning Remote Code Execution Vulnerability. This vulnerability allows…