Nero BackItUp in the Nero Productline is vulnerable to a path parsing/UI rendering flaw (CWE-22) that, in combination with Windows ShellExecuteW fallback extension resolution, leads to arbitrary code execution when a user clicks a crafted entry. By creating a trailing-dot folder and placing a same-basename script, Nero BackItUp renders the file as a folder icon and then invokes ShellExecuteW, which executes the script via PATHEXT fallback (.COM/.EXE/.BAT/.CMD). The issue affects recent Nero BackItUp product lines (2019-2025 and earlier) and has been acknowledged by the vendor.
Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

Tue, 13 Jan 2026 00:00:00 +0900

Type Values Removed Values Added
CPEs cpe:2.3:a:nero:backitup:*:*:*:*:*:*:*:*

Sun, 16 Nov 2025 07:15:00 +0900

Type Values Removed Values Added
First Time appeared Microsoft
Microsoft windows
Nero
Nero backitup
Vendors & Products Microsoft
Microsoft windows
Nero
Nero backitup

Sat, 15 Nov 2025 05:15:00 +0900

Type Values Removed Values Added
Weaknesses CWE-22
Metrics cvssV3_1

{'score': 8.6, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Sat, 15 Nov 2025 03:45:00 +0900

Type Values Removed Values Added
Description Nero BackItUp in the Nero Productline is vulnerable to a path parsing/UI rendering flaw (CWE-22) that, in combination with Windows ShellExecuteW fallback extension resolution, leads to arbitrary code execution when a user clicks a crafted entry. By creating a trailing-dot folder and placing a same-basename script, Nero BackItUp renders the file as a folder icon and then invokes ShellExecuteW, which executes the script via PATHEXT fallback (.COM/.EXE/.BAT/.CMD). The issue affects recent Nero BackItUp product lines (2019-2025 and earlier) and has been acknowledged by the vendor.
References

Projects

Sign in to view the affected projects.

cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

Updated: 2025-11-14T19:21:27.874Z

Reserved: 2025-10-27T00:00:00.000Z

Link: CVE-2025-63680

cve-icon Vulnrichment

Updated: 2025-11-14T19:20:40.686Z

cve-icon NVD

Status : Analyzed

Published: 2025-11-14T19:16:01.360

Modified: 2026-01-12T14:56:54.810

Link: CVE-2025-63680

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2025-11-16T07:07:26Z

Weaknesses