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Unify Openscape 4000 AssistantApplication · Atos

CVE-2023-35034

CRITICAL · 9.8 CVSS v3.1 Published 2023-06-12
Mitigation only
No fix yet — a mitigation exists. There is no fixed release. A documented workaround reduces exposure in the meantime.
See remediation →
100/100
Remediation priority · Urgent
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
Atos Unify OpenScape 4000 Assistant V10 R1 before V10 R1.42.0 and V10 R1.34.8 and Manager V10 R1 before V10 R1.42.0 and V10 R1.34.8 allow remote code execution by unauthenticated users, aka OSFOURK-24033.

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

Unauthenticated remote code execution vulnerability in Atos Unify OpenScape 4000 Assistant and Manager V10 R1. Attackers can execute arbitrary code without credentials on affected versions before V10 R1.42.0 or V10 R1.34.8. This is a critical pre-auth RCE in enterprise telephony/UC infrastructure.

MitigationUpgrade OpenScape 4000 to V10 R1.42.0 or V10 R1.34.8 or later. If immediate patching is not possible, restrict network access to management interfaces via firewall or VPN.

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
Unify Openscape 4000 AssistantApplication
Affected:= 10
Unify Openscape 4000 ManagerApplication
Affected:= 10

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
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 checks

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

  1. Identify if OpenScape 4000 is installed
    Check your system for Atos Unify OpenScape 4000 Assistant or Manager software. This is typically deployed on dedicated telephony/UC management servers. Look for installation directories, services, or web interfaces associated with OpenScape 4000.
    Affected if The software is present on the system
  2. Determine the installed version
    Locate the version information for OpenScape 4000 Assistant or Manager. This is typically found in the application itself (Help > About), in the web management interface, or in installation logs. The version format is V10 R1.x.x
    Affected if Version shows V10 R1.x.x but is lower than R1.34.8 or R1.42.0
  3. Confirm the exact version number
    Compare your installed version against the fixed releases. Vulnerable versions are any build before V10 R1.34.8 or before V10 R1.42.0. If you are on V10 R1.34.8 or later, OR V10 R1.42.0 or later, the vulnerability is patched.
    Affected if Version is before V10 R1.34.8 or before V10 R1.42.0
  4. Check if management interface is exposed
    Verify if the OpenScape 4000 web management interface (typically ports 443 or 8080) is accessible from network locations. This vulnerability is exploitable remotely without authentication, so exposed management interfaces are at higher risk.
    Affected if Management interface is reachable from untrusted networks

You are affected if OpenScape 4000 Assistant or Manager V10 is installed and the version is earlier than V10 R1.34.8 or V10 R1.42.0.

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.

dbcve · scoped
Mitigation available No clean upgrade yet — mitigate in the meantime
Mitigation

Upgrade OpenScape 4000 to V10 R1.42.0 or V10 R1.34.8 or later. If immediate patching is not possible, restrict network access to management interfaces via firewall or VPN.

Recommended fix High confidence

V10 R1.42.0 or V10 R1.34.8

  1. 1. Identify the current installed version of Unify Openscape 4000 Assistant or Manager V10
  2. 2. Download the fixed version from the official Atos Unify support portal (networks.unify.com)
  3. 3. For Openscape 4000 Assistant: Upgrade to V10 R1.42.0 or later, or V10 R1.34.8 as an alternative patch
  4. 4. For Openscape 4000 Manager: Upgrade to V10 R1.42.0 or later, or V10 R1.34.8 as an alternative patch
  5. 5. Verify the upgrade was successful by checking the version number in the product interface
  6. 6. Test that the web interface is operational after the upgrade
Caveat Review release notes for any configuration or feature changes between versions before upgrading

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

Fix this in Unify Openscape 4000 Assistant Scoped from the published advisory
  • Consultation3.0 h
  • Implementation4.0 h
  • Testing6.0 h
  • Review / QA2.0 h
15.0 hours of engineering $2,580
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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-2023-35034 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
  • No spam, self-promotion, credentials, or personal data