CVE-2023-48258
Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.
NVD · uneditedThe vulnerability allows a remote attacker to delete arbitrary files on the file system via a crafted URL or HTTP request through a victim’s session.
Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.
dbcve analysis · moderate confidenceThis is a path traversal/file deletion vulnerability that allows authenticated remote attackers to delete arbitrary files on the server by crafting malicious URLs or HTTP requests through a victim's session. The vulnerability likely stems from insufficient input validation on file operation parameters, enabling attackers to manipulate file paths outside the intended directory.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.
NVD · CPE data>= 1000, <= 1500-sp2CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.
From the vector- Attack vector
- Network
- Complexity
- Low
- Privileges
- None
- User interaction
- Required
- Scope
- Unchanged
- Confidentiality
- None
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H
Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.
dbcve checksWork through these to decide whether this CVE applies to you.
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Identify installed Bosch Nexo OS versionAccess the system administration interface or run 'version' command via CLI to retrieve the OS build number. Compare against the affected range: 1000 through 1500-sp2 inclusive.Affected if The installed version falls within 1000 to 1500-sp2 (any subversion of 1500) and the file operation web module is accessible.
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Verify file operation web endpoints are accessibleCheck if the web service exposing file operations (typically under /file, /upload, /delete, or similar file management paths) is reachable. Use a web scanner or check exposed API routes in the web server configuration.Affected if File operation endpoints are exposed without additional network segmentation or authentication barriers beyond basic session login.
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Inspect authentication configuration for file operationsReview the web application configuration files (typically XML or JSON config files in the web root or conf directory) to verify that file deletion endpoints allow authenticated users without additional path validation.Affected if File operation handlers accept user-supplied paths without validating that the path resides within an allowed directory (no allowlist enforcement).
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Review access logs for path traversal patternsExamine web server access logs for unusual patterns such as '../' sequences in file operation requests, particularly DELETE or POST methods targeting paths outside expected directories.
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Check for unexpected file deletions in monitored directoriesCompare file creation timestamps in web-accessible upload or data directories against known legitimate operations. Look for deletions of files not initiated by administrators.
You are affected if running Bosch Nexo OS versions 1000 through 1500-sp2 with file operation web endpoints accessible to authenticated users and no additional path validation layer in place.
Generated from the published advisory. Verify against your own configuration.
Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.
From vendor dataImplement strict input validation and authorization checks on all file operation parameters, ensuring paths are sanitized and restricted to allowed directories. Use allowlists for permitted file operations and enforce proper session controls.
- Consultation4.0 h
- Implementation8.0 h
- Testing6.0 h
- Review / QA4.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $6,176.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2023-48258 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2023-48258 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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- Verified mitigations, workarounds, and config changes
- Version or environment caveats, and links to real fixes
- No weaponised exploit code, or anything meant to cause harm
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