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Out-of-bounds ReadWeakness · CWE-125

CVE-2024-22040

HIGH · 7.5 CVSS v3.1 Published 2024-03-12
Mitigation only
No fix yet — a mitigation exists. There is no fixed release. A documented workaround reduces exposure in the meantime.
See remediation →
84/100
Remediation priority · High
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
A vulnerability has been identified in Cerberus PRO EN Engineering Tool (All versions), Cerberus PRO EN Fire Panel FC72x IP6 (All versions), Cerberus PRO EN Fire Panel FC72x IP7 (All versions), Cerberus PRO EN Fire Panel FC72x IP8 (All versions < IP8 SR4), Cerberus PRO EN X200 Cloud Distribution IP7 (All versions), Cerberus PRO EN X200 Cloud Distribution IP8 (All versions < V4.3.5618), Cerberus PRO EN X300 Cloud Distribution IP7 (All versions), Cerberus PRO EN X300 Cloud Distribution IP8 (All versions < V4.3.5617), Cerberus PRO UL Compact Panel FC922/924 (All versions < MP4), Cerberus PRO UL Engineering Tool (All versions < MP4), Cerberus PRO UL X300 Cloud Distribution (All versions < V4.3.0001), Desigo Fire Safety UL Compact Panel FC2025/2050 (All versions < MP4), Desigo Fire Safety UL Engineering Tool (All versions < MP4), Desigo Fire Safety UL X300 Cloud Distribution (All versions < V4.3.0001), Sinteso FS20 EN Engineering Tool (All versions), Sinteso FS20 EN Fire Panel FC20 MP6 (All versions), Sinteso FS20 EN Fire Panel FC20 MP7 (All versions), Sinteso FS20 EN Fire Panel FC20 MP8 (All versions < MP8 SR4), Sinteso FS20 EN X200 Cloud Distribution MP7 (All versions), Sinteso FS20 EN X200 Cloud Distribution MP8 (All versions < V4.3.5618), Sinteso FS20 EN X300 Cloud Distribution MP7 (All versions), Sinteso FS20 EN X300 Cloud Distribution MP8 (All versions < V4.3.5617), Sinteso Mobile (All versions). The network communication library in affected systems insufficiently validates HMAC values which might result in a buffer overread. This could allow an unauthenticated remote attacker to crash the network service.

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

The network communication library in affected Cerberus PRO, Desigo Fire Safety, and Sinteso systems insufficiently validates HMAC values, which can lead to a buffer overread. This vulnerability can be exploited by an unauthenticated remote attacker to crash the network service, resulting in denial of service.

MitigationApply vendor-provided patches and software updates (e.g., IP8 SR4, V4.3.5618, V4.3.5617, V4.3.0001, MP4) to affected systems. Where patches are unavailable, network segmentation and access controls should be implemented to limit exposure to unauthenticated attackers.

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
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/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 the installed product and version
    Access the system administration interface or check the software inventory to determine if the system is Cerberus PRO, Desigo Fire Safety, or Sinteso, and note the exact software version number
    Affected if The product is one of Cerberus PRO, Desigo Fire Safety, or Sinteso and the version is lower than IP8 SR4, V4.3.5618, V4.3.5617, V4.3.0001, or MP4 (or the version cannot be determined)
  2. Verify the network communication service is enabled
    Check the system configuration or service status to confirm the network communication library/service is active and listening on network ports
    Affected if The network communication service is enabled and operational on the system
  3. Determine network exposure of the affected service
    Review firewall rules, network segmentation, and access control lists to check whether the network service port is accessible from untrusted networks or the internet
    Affected if The service port is accessible to unauthenticated remote attackers without network segmentation or access controls
  4. Compare installed version against fixed releases
    If the product version is identified, cross-reference it against the fixed versions (IP8 SR4, V4.3.5618, V4.3.5617, V4.3.0001, MP4) to determine if the patch has been applied
    Affected if The installed version is lower than the fixed release versions and no vendor patch has been applied

A system is affected if it runs Cerberus PRO, Desigo Fire Safety, or Sinteso with a version lower than the fixed releases, has the network communication service enabled, and is exposed to unauthenticated remote attackers.

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

Apply vendor-provided patches and software updates (e.g., IP8 SR4, V4.3.5618, V4.3.5617, V4.3.0001, MP4) to affected systems. Where patches are unavailable, network segmentation and access controls should be implemented to limit exposure to unauthenticated attackers.

Have this fixed Scoped from the published advisory
  • Consultation8.0 h
  • Implementation16.0 h
  • Testing12.0 h
  • Review / QA4.0 h
40.0 hours of engineering $7,000
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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-2024-22040 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