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Identity Services EngineApplication · Cisco

CVE-2016-9198

HIGH · 7.5 CVSS v3.0 Published 2016-12-14
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 in the Active Directory integration component of Cisco Identity Services Engine (ISE) could allow an unauthenticated, remote attacker to perform a denial of service (DoS) attack. More Information: CSCuw15041. Known Affected Releases: 1.2(1.199).

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 · moderate confidence

A vulnerability in the Active Directory integration component of Cisco Identity Services Engine (ISE) allows an unauthenticated, remote attacker to cause a denial of service by crashing or making the AD integration unavailable.

MitigationApply the appropriate Cisco patch for CVE-2016-9198 (reference CSCuw15041) or upgrade to a patched release beyond version 1.2(1.199). Monitor Cisco PSIRT advisories for any 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
Identity Services EngineApplication
Affected:= 1.2\(1.199\)

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:3.0/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. Check installed Cisco ISE version
    Log into the Cisco ISE admin UI and navigate to Administration > System > Licensing, or use the CLI command 'show version' to display the installed ISE version.
    Affected if The installed version is exactly 1.2(1.199)
  2. Verify Active Directory integration is configured
    In the Cisco ISE admin UI, navigate to Administration > External Identity Sources > Active Directory to check if any AD domains are added and the AD connector is configured.
    Affected if Active Directory integration is configured with at least one AD domain
  3. Confirm AD connector status
    In the Cisco ISE admin UI, go to Administration > External Identity Sources > Active Directory and check the status of the AD connector. Alternatively, use the CLI command 'show ad groups' to verify AD connectivity.
    Affected if The AD connector shows as connected or the AD join point is operational

You are affected if your Cisco ISE version is exactly 1.2(1.199) and Active Directory integration is configured and operational.

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 the appropriate Cisco patch for CVE-2016-9198 (reference CSCuw15041) or upgrade to a patched release beyond version 1.2(1.199). Monitor Cisco PSIRT advisories for any updates.

Fix this in Identity Services Engine Scoped from the published advisory
  • Consultation4.0 h
  • Implementation6.0 h
  • Testing4.0 h
  • Review / QA2.0 h
16.0 hours of engineering $2,840
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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-2016-9198 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