CVE-2026-25599
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 · uneditedMissing authentication and clear‑text transmission of data from the heat pumps to the control server, combined with the absence of input validation on aggregated data, can lead to stored XSS that enables theft of cookies from the pump’s web control interface. Older Orca heat pump devices communicating with the Orca server over an unencrypted and unauthenticated HTTP connection on a non-secure port specifically enable an attacker to impersonate a legitimate device and inject malicious payloads. This enables the insertion of harmful code directly into the Orca user portal, potentially compromising user accounts, exposing sensitive information, and allowing further unauthorized actions within the portal.
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 confidenceOlder Orca heat pump devices transmit data to the control server over unencrypted, unauthenticated HTTP connections. Attackers can impersonate legitimate devices due to missing authentication, inject malicious payloads lacking input validation, leading to stored XSS in the Orca user portal that enables cookie theft and account compromise.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
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
- Required
- Scope
- Unchanged
- Confidentiality
- Low
- Integrity
- Low
- Availability
- Low
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L
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 Orca heat pump devices on your networkInventory network-connected devices and look for Orca heat pump controllers or gateways. Check device labels, management interfaces, or DHCP lease tables for Orca-related hostnames or MAC OUIs.Affected if Orca heat pump devices are present in the environment and are older models (pre-TLS implementation)
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Inspect device-to-server communication protocolCapture network traffic between Orca devices and your control server, or review server configuration for listener ports. Check whether devices connect on HTTP (port 80) or HTTPS (port 443).Affected if Devices communicate over unencrypted HTTP (port 80) rather than encrypted HTTPS (port 443)
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Verify authentication requirements for device connectionsReview the control server configuration or API documentation to determine if devices must present credentials or certificates before sending data. Test by attempting an unauthenticated HTTP POST to the device ingestion endpoint.Affected if The control server accepts device data without requiring authentication tokens, certificates, or device IDs
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Check for XSS vulnerability in user portalIf you have access to the user portal admin interface or source code, examine how device-reported data (device names, status messages, diagnostics) is rendered. Look for lack of output encoding before rendering in web pages.Affected if Device-supplied data is stored and displayed in the portal without sanitization or encoding, allowing injected script tags to persist
Your environment is affected if you have older Orca heat pump devices communicating over unencrypted HTTP to a control server that does not authenticate devices, allowing injection of malicious scripts that steal session cookies.
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 TLS encryption for all device-to-server communication, add device authentication, and enforce strict input validation with output encoding to prevent XSS attacks.
- Consultation8.0 h
- Implementation40.0 h
- Testing16.0 h
- Review / QA8.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2026-25599 — 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-2026-25599 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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