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Ewon FirmwareOperating system · Ewon

CVE-2015-7926

CRITICAL · 9.9 CVSS v3.0 Published 2015-12-23
Fix available
A fix is available. Upgrade to after 10.0s0 or later.
See remediation →
100/100
Remediation priority · Urgent
Public exploit Remotely reachable 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
eWON devices with firmware before 10.1s0 omit RBAC for I/O server information and status requests, which allows remote attackers to obtain sensitive information via an unspecified URL.

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
How this class of weakness works · CWE-200

The application discloses data — error detail, internal paths, tokens, or other users' records — to someone who shouldn't see it. On its own it can look minor, but it hands attackers the map they need for a larger attack. Remediation is about minimising what's returned and enforcing authorization on every piece of data.

General guidance for the information exposure class — the official description and references above are authoritative for this specific CVE. Want a bespoke review and a reviewed fix? Ask our team →

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
Ewon FirmwareOperating system
Affected:<= 10.0s0

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
Low
User interaction
None
Scope
Changed
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

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 · scoped
Upgrade available Upgrade to a release after 10.0s0
Recommended fix High confidence

eWON firmware 10.1s0 (or any later stable release)

  1. Check the current firmware version of the eWON device via the web interface (usually under System > General).
  2. Download the firmware upgrade package (version 10.1s0 or later) from the official eWON support site (e.g., https://www.ewon.biz/support).
  3. Log into the eWON web UI with administrator credentials.
  4. Navigate to Administration > Firmware Upgrade and upload the downloaded firmware file.
  5. Follow the on-screen instructions to apply the upgrade; the device will reboot.
  6. After the reboot, verify that the firmware version displayed in System > General is 10.1s0 or higher.
  7. Confirm that RBAC controls are now enforced for I/O server information and status requests (e.g., by testing access to the previously unrestricted URLs).

Generated from the published advisory — verify against the referenced sources before acting.

We can identify the exact fixed release, upgrade, and verify it in staging — typical engagement from $1,600. Get the upgrade done

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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-2015-7926 in production — separate from our analysis above.

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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
  • No spam, self-promotion, credentials, or personal data