CVE-2026-24933
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 API communication component fails to validate the SSL/TLS certificate when sending HTTPS requests to the server. An improper certificates validation vulnerability allows an unauthenticated remote attacker can perform a Man-in-the-Middle (MitM) attack to intercept the cleartext communication, potentially leading to the exposure of sensitive user information, including account emails, MD5 hashed passwords, and device serial numbers. Affected products and versions include: from ADM 4.1.0 through ADM 4.3.3.ROF1 as well as from ADM 5.0.0 through ADM 5.1.1.RCI1.
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 confidenceThe API communication component in ADM fails to validate SSL/TLS certificates when sending HTTPS requests, allowing an unauthenticated remote attacker to perform a Man-in-the-Middle attack and intercept cleartext communication containing account emails, MD5 hashed passwords, and device serial numbers.
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>= 4.1.0.rhu2, <= 4.3.3.rof1>= 5.0.0.ra82, < 5.1.2.re51CVSS 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
- High
- Privileges
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- None
- Availability
- None
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
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 ADM versionAccess the Asustor Data Master web interface and navigate to Settings > System > About, or run 'adm_version' via SSH if availableAffected if The installed version is 4.1.0.rhu2 through 4.3.3.rof1 inclusive, or 5.0.0.ra82 through 5.1.2.re50 inclusive (version is less than 5.1.2.re51)
A user is affected if their Asustor Data Master version falls within 4.1.0.rhu2-4.3.3.rof1 or 5.0.0.ra82-5.1.2.re50, since the SSL/TLS certificate validation failure is inherent to the component in these versions
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.
dbcve · scoped5.1.2.re51
Enable proper SSL/TLS certificate validation in the API client or implement certificate pinning to ensure the component verifies server certificates before establishing secure connections.
ADM 5.1.2.re51 or later (for ADM 5.x users); ADM 4.3.3.ROF1 or later (for ADM 4.x users, if available)
- 1. Identify the current ADM version installed on the Asustor device via the ADM dashboard or system settings
- 2. Navigate to the Asustor support/download center at www.asustor.com to obtain the firmware update
- 3. Download ADM version 5.1.2.re51 or later from the official Asustor website
- 4. Back up critical configuration and data on the NAS before applying firmware updates
- 5. Apply the firmware update through the ADM control panel under 'System' > 'Firmware Update'
- 6. Verify the update was successful and the system is running the patched version
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation4.0 h
- Implementation8.0 h
- Testing4.0 h
- Review / QA3.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2026-24933 — 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-2026-24933 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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- Version or environment caveats, and links to real fixes
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