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Incorrect Permission AssignmentWeakness · CWE-732

CVE-2024-8256

MEDIUM · 5.9 CVSS v4.0 Published 2024-12-10
Mitigation only
No fix yet — a mitigation exists. There is no fixed release. A documented workaround reduces exposure in the meantime.
See remediation →
61/100
Remediation priority · Elevated
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
In Teltonika Networks RUTOS devices, running on versions 7.0 to 7.8 (excluding) and TSWOS devices running on versions 1.0 to 1.3 (excluding), due to incorrect permission handling a vulnerability exists which allows a lower privileged user with default permissions to access critical device resources via the API.

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

Due to incorrect permission handling in the API of Teltonika Networks RUTOS (versions 7.0 to 7.8) and TSWOS (versions 1.0 to 1.3) devices, a lower privileged user with default permissions can bypass authorization checks and access critical device resources that should be restricted to higher-privilege accounts.

MitigationUpdate RUTOS to version 7.8 or later and TSWOS to version 1.3 or later to obtain the patched firmware. In the interim, restrict API access to trusted networks and monitor for anomalous API requests indicating unauthorized resource access.

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
Adjacent
Complexity
Low
Privileges
Low
Authentication
X
User interaction
None
Scope
X

CVSS:4.0/AV:A/AC:L/AT:P/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

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 device model and firmware version
    Access the device's web administration interface or use the command line (e.g., '固件版本' or 'cat /etc/version') to determine the exact firmware version installed
    Affected if The firmware version is RUTOS 7.0 through 7.8 or TSWOS 1.0 through 1.3
  2. Verify API service is accessible
    Check if the device's web API endpoint is reachable (typically on HTTP/HTTPS ports 80/443 or a specific API path such as /api or /cgi-bin/api)
    Affected if The API is exposed and responds to requests without requiring elevated privileges
  3. Confirm presence of low-privilege user accounts
    Review user accounts in the device's user management section (usually under System > Administration or similar) to identify accounts with limited/default permissions
    Affected if There exists at least one user account with lower privileges than administrator present on the device
  4. Test for authorization bypass
    Using a low-privilege account, attempt to access API endpoints that should require higher privileges (such as sensitive configuration endpoints, system status, or administrative functions)
    Affected if A lower-privileged user can successfully access resources or functions restricted to administrator or higher-privilege accounts

The device is affected if it runs RUTOS firmware version 7.0-7.8 or TSWOS version 1.0-1.3, has the API accessible, and a low-privilege user can access higher-privilege resources.

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 RUTOS to version 7.8 or later and TSWOS to version 1.3 or later to obtain the patched firmware. In the interim, restrict API access to trusted networks and monitor for anomalous API requests indicating unauthorized resource access.

Have this fixed Scoped from the published advisory
  • Consultation3.0 h
  • Implementation6.0 h
  • Testing4.0 h
  • Review / QA2.0 h
15.0 hours of engineering $2,640
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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-2024-8256 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
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