CVE intelligence and bounded remediation
CVE-2021-22651 — Luxion Keyshot security vulnerability
When loading a specially crafted file, Luxion KeyShot versions prior to 10.1, Luxion KeyShot Viewer versions prior to 10.1, Luxion KeyShot Network Rendering versions prior to 10.1, and Luxion KeyVR versions prior to 10.1 are, while processing the extraction of temporary files, suffering from a directory traversal vulnerability, which allows an attacker to store arbitrary scripts into automatic startup folders.
- Severity
- High
- CVSS
- 7.8 (3.1)
- Published
- 2021-02-23
- CISA KEV
- Not currently listed
- Ecosystem
- software/application
- Weaknesses
- CWE-22
Affected products
- luxion / keyshot
- luxion / keyshot_network_rendering
- luxion / keyshot_viewer
- luxion / keyvr
- siemens / solid_edge_se2020_firmware
- siemens / solid_edge_se2021_firmware
Matched remediation archetype
Path traversal, unsafe upload, and file handling
This catalog composition supplies bounded fallback guidance. Explicitly reviewed curated workflows load with the complete record below.
Check exposure
- Trace untrusted filenames, archive entries, URLs, and path segments into read, write, include, extraction, and upload operations.
- Identify filesystem roots, mount permissions, symbolic-link behavior, archive handling, and whether uploaded content is web-accessible or executable.
- Review canonicalization and containment checks across supported operating systems and storage backends.
Remediate safely
- Generate server-side storage identifiers and resolve paths beneath a fixed root using filesystem-aware containment checks.
- Reject absolute, parent-relative, alternate-separator, device, link, and archive entries that escape the intended root.
- Store uploads outside executable or served paths, validate type and size, and use private atomic temporary files.
Authoritative sources
Complete CVE record and remediation plan
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