CVE-2023-48253
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 authenticated attacker to read or update arbitrary content of the authentication database via a crafted HTTP request. By abusing this vulnerability it is possible to exfiltrate other users’ password hashes or update them with arbitrary values and access their accounts.
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 · high confidenceThis is an authentication bypass/privilege escalation vulnerability in the authentication database layer. An authenticated attacker can send crafted HTTP requests to read or modify the authentication database, enabling them to extract password hashes of other users or overwrite password hashes with controlled values to achieve account takeover.
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
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/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 Bosch Nexo OS versionAccess the system management interface or run the command to display the installed OS version (e.g., systeminfo, nexo-version, or via the device management console)Affected if The installed version falls within the range >= 1000 and <= 1500-sp2
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Locate authentication database moduleInspect the Bosch Nexo OS system for the authentication database layer component - typically found in the security or authentication configuration section of the management interfaceAffected if The authentication database module exists and is actively managing user credentials
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Verify network accessibility of authentication interfaceCheck network configuration to determine if the HTTP-based authentication interface is exposed to network segments beyond the trusted administrative networkAffected if The authentication interface is reachable from untrusted network segments or the internet
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Review authorization controls on authentication databaseExamine the authorization configuration for the authentication database layer to confirm that access controls properly restrict read and write operations to authorized administrators onlyAffected if Authorization checks are missing, misconfigured, or can be bypassed for authenticated users
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Audit authentication logs for database access patternsReview security and access logs for the authentication database module, looking for unexpected or unauthorized read/write operations on user credential recordsAffected if Logs show authentication database modifications from users without appropriate privileges
You are affected if your Bosch Nexo OS version is between 1000 and 1500-sp2 inclusive and the authentication database interface is network-accessible with inadequate authorization controls.
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 dataApply vendor-provided patch to fix the broken authorization checks in the authentication database module; if patching is delayed, restrict network access to the affected authentication interface.
- Consultation6.0 h
- Implementation12.0 h
- Testing10.0 h
- Review / QA6.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $9,504.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2023-48253 — 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-2023-48253 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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A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.
- 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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