Aironet Access Point FirmwareOperating system · Cisco
CVE-2019-1829
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 · uneditedA vulnerability in the CLI of Cisco Aironet Series Access Points (APs) could allow an authenticated, local attacker to gain access to the underlying Linux operating system (OS) without the proper authentication. The attacker would need valid administrator device credentials. The vulnerability is due to improper validation of user-supplied input for certain CLI commands. An attacker could exploit this vulnerability by authenticating to an affected device and submitting crafted input for a CLI command. A successful exploit could allow the attacker to obtain access to the underlying Linux OS without proper authentication.
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 confidenceA privilege escalation vulnerability in the CLI of Cisco Aironet Series Access Points allows an authenticated administrator to bypass proper authentication and gain direct access to the underlying Linux OS. The root cause is improper validation of user-supplied input in certain CLI commands, enabling shell escape or command injection that spawns an unauthorized Linux shell with elevated privileges.
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
Aironet Access Point FirmwareOperating system
< 8.3.150.0>= 8.5, < 8.5.140.0>= 8.6.101.0, < 8.8.111.0= 8.5\(131.0\)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
- Local
- Complexity
- Low
- Privileges
- High
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:L/AC:L/PR:H/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 checksWork through these to decide whether this CVE applies to you.
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Identify the device model and confirm it is a Cisco Aironet Access PointAccess the device CLI or web interface and retrieve the hardware model information. In the CLI, use 'show version' or 'show hardware' commands to confirm the device is an Aironet Series Access Point.Affected if The device is not a Cisco Aironet Access Point (this CVE only applies to that product line)
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Determine the installed firmware versionIn the CLI, run 'show version' or 'show firmware' to display the current firmware version. Note the exact version number displayed (e.g., 8.5.131.0, 8.8.100.0, etc.).Affected if The firmware version cannot be determined or is not visible
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Compare the installed version against the affected rangesCross-reference the firmware version from step 2 against these affected ranges: < 8.3.150.0, >= 8.5 but < 8.5.140.0, >= 8.6.101.0 but < 8.8.111.0, or exactly version 8.5(131.0).Affected if The installed version falls within any of these ranges: less than 8.3.150.0, 8.5.x versions from 8.5.0 through 8.5.139.0, versions 8.6.101.0 through 8.8.110.0, or exactly version 8.5(131.0)
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Verify CLI access and authentication mechanismsConfirm that CLI administrative access is enabled. Check for any externally accessible CLI interfaces (SSH, telnet) using 'show ssh' or 'show line' commands. Determine if default or weak administrator credentials are in use.Affected if CLI administrative access is exposed externally with authenticated administrator privileges available
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Inspect for indicators of unauthorized shell accessReview system logs using 'show logging' or check for unexpected processes or shell sessions. Look for any evidence of shell escape or command injection attempts in recent logs.Affected if Unusual CLI behavior, unexpected shell sessions, or log entries indicating command injection or privilege escalation attempts are present
The environment is affected if the device is a Cisco Aironet Access Point running firmware version that falls within the affected ranges: < 8.3.150.0, >= 8.5 and < 8.5.140.0, >= 8.6.101.0 and < 8.8.111.0, or exactly version 8.5(131.0), and the CLI is accessible to authenticated administrators.
Generated from the published advisory. Verify against your own configuration.
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 data8.3.150.08.5.140.08.8.111.0
Apply the vendor-supplied firmware update from Cisco that addresses this vulnerability. Until patched, restrict CLI access to only trusted administrators and monitor for unauthorized access attempts.
Fix this in Aironet Access Point Firmware
Scoped from the published advisory
- Consultation4.0 h
- Implementation8.0 h
- Testing4.0 h
- Review / QA2.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $5,120.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2019-1829 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2019-1829 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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- Version or environment caveats, and links to real fixes
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