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CteraApplication

CVE-2025-52196

HIGH · 7.5 CVSS v3.1 Published 2025-12-16
Mitigation only
No fix yet — a mitigation exists. There is no fixed release. A documented workaround reduces exposure in the meantime.
See remediation →
84/100
Remediation priority · High
Remotely reachable No privileges Zero-click

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 · unedited
Server-Side Request Forgery (SSRF) vulnerability in Ctera Portal 8.1.x (8.1.1417.24) allows remote attackers to induce the server to make arbitrary HTTP requests via a crafted HTML file containing an iframe.

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 confidence

Ctera Portal 8.1.x (8.1.1417.24) contains a Server-Side Request Forgery (SSRF) vulnerability where processing a crafted HTML file with an iframe causes the server to make arbitrary HTTP requests to attacker-controlled destinations. This allows attackers to interact with internal services, bypass network restrictions, or exfiltrate data through the compromised server.

MitigationUpdate to a patched version of Ctera Portal. If immediate patching is not possible, implement network segmentation to restrict outbound connections from the Ctera Portal server and consider disabling HTML file processing or iframe rendering in untrusted contexts.

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
CteraApplication
Affected:= 8.1.1417.24

CVSS 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
None
Availability
None

CVSS:3.1/AV:N/AC:L/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 checks

Work through these to decide whether this CVE applies to you.

  1. Identify Ctera Portal version
    Access the Ctera Portal admin interface and navigate to System > About or Settings > Version to view the installed software version. Alternatively, check the version through the command line interface if available.
    Affected if The installed version is exactly 8.1.1417.24 (the only version explicitly listed as affected) or falls within the 8.1.x branch at that specific patch level.
  2. Determine if HTML file processing is enabled
    Locate the Ctera Portal settings related to file preview or document rendering. Look for options controlling HTML file parsing, preview generation, or document transformation services.
    Affected if HTML file processing or document preview functionality is enabled on the portal, as this feature must be active for the server to parse uploaded HTML files containing iframes.
  3. Verify iframe rendering capability
    Check the portal configuration for settings controlling iframe, embedded content, or external resource loading within HTML previews. This may appear under security settings, content filtering, or document handling options.
    Affected if Iframe rendering or external content embedding is permitted within the HTML processing pipeline, which allows the crafted HTML to trigger arbitrary HTTP requests.
  4. Inspect server logs for suspicious outbound requests
    Review Ctera Portal server logs, proxy logs, or network connection records for outgoing HTTP/HTTPS requests from the portal server to unexpected or attacker-controlled IP addresses or domains.
    Affected if Outbound HTTP requests are observed originating from the Ctera Portal server to destinations that were not intentionally configured or are associated with untrusted sources.

A Ctera Portal installation is affected if it is running version 8.1.1417.24 with HTML file processing and iframe rendering enabled, allowing the server to be coerced into making arbitrary HTTP requests when processing a specially crafted HTML file.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

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 data
Mitigation available No clean upgrade yet — mitigate in the meantime
Mitigation

Update to a patched version of Ctera Portal. If immediate patching is not possible, implement network segmentation to restrict outbound connections from the Ctera Portal server and consider disabling HTML file processing or iframe rendering in untrusted contexts.

Fix this in Ctera Scoped from the published advisory
  • Consultation4.0 h
  • Implementation12.0 h
  • Testing8.0 h
  • Review / QA4.0 h
28.0 hours of engineering $4,880
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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2025-52196 in production — separate from our analysis above.

No notes yet

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What this is

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.

What belongs here
  • 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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