dbcve.org
Big Ip Ssl OrchestratorApplication · F5

CVE-2025-41430

HIGH · 7.5 CVSS v3.1 Published 2025-10-15
Fix available
A fix is available. Upgrade to 16.1.4 / 17.1.3 or later.
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
When BIG-IP SSL Orchestrator is enabled, undisclosed traffic can cause the Traffic Management Microkernel (TMM) to terminate. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

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 · low confidence

This is a denial-of-service vulnerability in F5 BIG-IP SSL Orchestrator where specific undisclosed traffic patterns, when the SSL Orchestrator feature is enabled, cause the Traffic Management Microkernel (TMM) to terminate unexpectedly. TMM is the core processing component handling all traffic on BIG-IP devices, so its termination results in complete traffic processing failure.

MitigationUntil F5 releases a patch, consider disabling SSL Orchestrator if not actively required, or implement network-level traffic filtering to block potential malicious traffic patterns. Monitor F5 advisories for upcoming security updates.

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
Big Ip Ssl OrchestratorApplication
Affected:>= 15.1.0, <= 15.1.9>= 16.1.0, < 16.1.4>= 17.1.0, < 17.1.3= 17.5.0

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. Confirm SSL Orchestrator module is enabled
    Run the command to list SSL Orchestrator configuration (e.g., tmsh list /sslo or check via GUI under SSL Orchestrator > Overview). Verify the module status shows as enabled/active.
    Affected if SSL Orchestrator is currently enabled - the vulnerability only triggers when this feature is active.
  2. Identify the installed BIG-IP version
    Run the command to display system version (e.g., tmsh show /sys version or check the GUI System > About page). Record the full version number including build.
    Affected if The installed version falls within any of these ranges: 15.1.0-15.1.9, 16.1.0-16.1.3, 17.1.0-17.1.2, or 17.5.0 exactly.
  3. Verify TMM is running without recent crashes
    Check TMM status (e.g., tmsh show /tmm stat or review /var/log/ltm for TMM-related messages). Look for unexpected restarts or core dumps.
    Affected if TMM has terminated unexpectedly or shows signs of instability since the SSL Orchestrator was enabled.
  4. Review traffic patterns if SSL Orchestrator is active
    Monitor network traffic through the SSL Orchestrator (e.g., via tmsh show /sslo traffic or external logging/SIEM tools). Look for unusual or anomalous traffic patterns that may correlate with TMM issues.
    Affected if There is evidence of traffic processing failures or TMM restarts occurring when specific traffic passes through the SSL Orchestrator.

You are affected if SSL Orchestrator is enabled AND your BIG-IP version matches one of the affected version ranges, and you have observed TMM instability or crashes.

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
Upgrade available Upgrade to 16.1.4 / 17.1.3 or later
Fixed in 16.1.417.1.3
Interim mitigation

Until F5 releases a patch, consider disabling SSL Orchestrator if not actively required, or implement network-level traffic filtering to block potential malicious traffic patterns. Monitor F5 advisories for upcoming security updates.

Recommended fix High confidence

Upgrade to 15.1.10+ (15.1.x line), 16.1.4+ (16.1.x line), 17.1.3+ (17.1.x line), or 17.5.1+ (17.5.x line) - choose the same major version as your current installation

  1. 1. Verify the current BIG-IP SSL Orchestrator version using 'tmsh show /sys version' or the web UI
  2. 2. Download the appropriate fixed version from F5 Downloads (my.f5.com): For 15.1.x use 15.1.10 or later, for 16.1.x use 16.1.4 or later, for 17.1.x use 17.1.3 or later, for 17.5.x use 17.5.1 or later
  3. 3. Review F5 release notes for the target version to understand changes and requirements
  4. 4. Plan maintenance window - upgrade should be performed during low-traffic period
  5. 5. Backup current configuration using 'tmsh save /sys config' or UCS backup
  6. 6. Upload the ISO image to the BIG-IP and install via 'tmsh install sys software' or web UI
  7. 7. After installation, verify the TMM process is running: 'tmsh show /tmctl tmm_info'
  8. 8. Confirm SSL Orchestrator is functioning correctly with 'tmsh list /sslo'
Caveat Standard BIG-IP upgrade considerations apply - review F5 release notes for any configuration or behavior changes; test in non-production environment first

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

Fix this in Big Ip Ssl Orchestrator Scoped from the published advisory
  • Consultation4.0 h
  • Implementation2.0 h
  • Testing6.0 h
  • Review / QA3.0 h
15.0 hours of engineering $2,600
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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-2025-41430 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
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  • Version or environment caveats, and links to real fixes
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