CVE-2025-2859
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 · uneditedAn attacker with network access, could capture traffic and obtain user cookies, allowing the attacker to steal the active user session and make changes to the device via web, depending on the privileges obtained by the user.
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 confidenceThe vulnerability allows an attacker with network access to capture traffic and obtain user cookies, enabling session hijacking. This suggests cleartext communication (HTTP) or insufficient transport layer security, allowing the attacker to intercept session cookies and impersonate authenticated users.
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= 2.1.3CVSS 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:3.1/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 Arteche Satech Bcu Firmware versionAccess the device management interface or check system information settings to determine the installed firmware version. This is typically found in the About, System Info, or Diagnostics section of the web-based management console.Affected if The installed firmware version is exactly 2.1.3
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Verify if HTTP management interface is accessibleAttempt to access the device using HTTP (port 80) rather than HTTPS. Check whether the device responds to plain HTTP requests for the login or administrative interface.Affected if The device accepts unencrypted HTTP connections on port 80 or other non-secure ports
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Inspect cookie transmission over HTTPUse a browser or network capture tool to observe cookie headers when authenticating to the device. Record whether cookies are transmitted in cleartext within HTTP headers.Affected if Session cookies are transmitted over unencrypted HTTP connections without TLS/SSL encryption
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Check cookie attribute configurationExamine the Set-Cookie headers in the HTTP response during login. Look for the presence or absence of Secure, HttpOnly, and SameSite attributes on session cookies.Affected if Session cookies lack the Secure flag, making them eligible for transmission over unencrypted connections
A user is affected if they are running Arteche Satech Bcu Firmware version 2.1.3 and the device allows unencrypted HTTP access where session cookies are transmitted without secure flags.
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 HTTPS/SSL/TLS to encrypt all traffic, configure secure cookie flags (Secure, HttpOnly, SameSite), and implement proper session management with session invalidation on logout and periodic session rotation.
- Consultation2.0 h
- Implementation8.0 h
- Testing4.0 h
- Review / QA2.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $4,480.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2025-2859 — 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-2025-2859 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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