CVE-2015-2081
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 · uneditedDatto ALTO and SIRIS devices allow Remote Code Execution via unauthenticated requests to PHP scripts.
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 confidenceDatto ALTO and SIRIS backup devices contain a critical vulnerability allowing unauthenticated remote attackers to execute arbitrary code by sending specially crafted requests to exposed PHP scripts. The lack of authentication checks on these scripts permits direct code execution without credentials, making exploitation trivial and severe.
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 dataall versionsall versionsall versionsall versionsall versionsall versionsall versionsall versionsCVSS 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
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.0/AV:N/AC:L/PR:N/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 the device modelLog into the device administrative interface or check the device label/hardware to confirm it is a Datto Alto or Siris backup appliance.Affected if The device is any model of Datto Alto (2, 3, XL, Imaged) or Datto Siris (2, 3, 3 X All Flash, Virtual).
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Confirm firmware versionAccess the device management console or check system information to retrieve the installed firmware version.Affected if Any firmware version is installed, as all versions of the listed products are affected.
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Check network exposureDetermine if the device management interface or PHP endpoints are accessible from external networks by testing remote connectivity to the device IP or hostname on common HTTP/HTTPS ports (80, 443).Affected if The device is reachable from external networks or the internet without VPN or firewall restrictions.
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Identify exposed PHP endpointsReview the device web server configuration or use web crawling tools to enumerate accessible PHP scripts on the device. Look for any publicly accessible .php files in the web root.Affected if Any PHP scripts are exposed without authentication requirements.
The environment is affected if the device is any Datto Alto or Siris model with any firmware version that has PHP endpoints accessible from external networks without authentication.
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 dataImmediately restrict external network access to affected devices, contact Datto for emergency patches, and consider temporary network segmentation or disabling of the vulnerable PHP endpoints until vendor remediation is available.
- 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-2015-2081 — 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-2015-2081 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
- No spam, self-promotion, credentials, or personal data