Cisco Aironet Series Access Points Directory Traversal Vulnerability
A vulnerability in the CLI of Cisco Aironet Access Points (APs) could allow an authenticated, local attacker to access sensitive information stored in an AP. The vulnerability is due to improper sanitization of user-supplied input in specific CLI commands. An attacker could exploit this vulnerability by accessing the CLI of an affected AP with administrator privileges and issuing crafted commands that result in directory traversal. A successful exploit could allow the attacker to view system files on the affected device, which could contain sensitive information. Software versions 8.8 and 8.9 are affected.
Noroxi analysis
No Noroxi analysis for this record yet
We don't hand-write analysis for the hundreds of thousands of vulnerabilities in the database; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.
We use this product, ask for help- Published
- Apr 17, 2019
- Updated
- Jun 16, 2026
- EPSS
- 0.8% · 54th percentile
- CWE
- CWE-22
Sign in to follow · You’ll be notified if a followed record enters KEV, gets an exploit or is updated.
Report tools
Action score
17
Monitor
Low priority for now.
- CVSS
- 17 / 40 · 4.4 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 0 / 30 · 0.8%
CISA SSVC decision
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
Vulnrichment: CISA's decision-tree inputs.
CNA vs NVD score
- NVD
- 4.4
- CNA · cisco
- 4.4
- agree
The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.
Affected systems
| Vendor | Product | CPE |
|---|---|---|
| cisco | aironet access point firmware | cpe:2.3:o:cisco:aironet_access_point_firmware |
| cisco | aironet 1542d | cpe:2.3:h:cisco:aironet_1542d |
| cisco | aironet 1542i | cpe:2.3:h:cisco:aironet_1542i |
| cisco | aironet 1562d | cpe:2.3:h:cisco:aironet_1562d |
| cisco | aironet 1562e | cpe:2.3:h:cisco:aironet_1562e |
| cisco | aironet 1562i | cpe:2.3:h:cisco:aironet_1562i |
| cisco | aironet 1800i | cpe:2.3:h:cisco:aironet_1800i |
| cisco | aironet 1850e | cpe:2.3:h:cisco:aironet_1850e |
| cisco | aironet 1850i | cpe:2.3:h:cisco:aironet_1850i |
| cisco | aironet 2800e | cpe:2.3:h:cisco:aironet_2800e |
| cisco | aironet 2800i | cpe:2.3:h:cisco:aironet_2800i |
| cisco | aironet 3800e | cpe:2.3:h:cisco:aironet_3800e |
and 2 more
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- cisco aironet access point firmware8.8
- cisco aironet access point firmware8.9
Versions reported by the vendor
Affected version ranges reported by the assigning authority (cisco). Independent of NVD's CPE analysis and usually ahead of it.
Cisco Cisco Aironet Access Point Software
- 8.8, 8.9affected
Same product
cisco: all recordsOther highest-scoring records for the same primary product.
- CVE-2017-3834A vulnerability in Cisco Aironet 1830 Series and Cisco Aironet 1850 Series Access Points running Cisco Mobility Express Software could allow40Plan
- CVE-2017-3873A vulnerability in the Plug-and-Play (PnP) subsystem of the Cisco Aironet 1800, 2800, and 3800 Series Access Points running a Lightweight Ac30Monitor
- CVE-2019-1834Cisco Aironet Series Access Points Denial of Service Vulnerability26Monitor
- CVE-2019-1829Cisco Aironet Series Access Points Command Injection Vulnerability26Monitor
- CVE-2019-1826Cisco Aironet Series Access Points Quality of Service Denial of Service Vulnerability22Monitor
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
No fix version is recorded for this entry. Check the references for vendor advisories.
Exploit status
No known public exploit
No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.
Research context
For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.
Timeline
From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.
No dated events beyond publication.
FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).
Patch and commit links
Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.
No commit or PR link among the references.
Credits
All researchersFinders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.
No credits in the CNA record.
Variant candidates
Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.
No nightly-computed relations.
Chain candidates
An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.
—
Bug bounty scope
No known public program.
Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).
Technical details
Attack conditions
- Someone with local access to the system can trigger it.
- Administrator privileges are required.
- No user action is required.
- No special conditions are required; it is repeatable.
If successful
- Confidentiality
- high · data can be read
- Integrity
- none
- Availability
- none
- Attack vector
- Local
- Attack complexity
- Low
- Privileges required
- High
- User interaction
- None
- Scope
- Unchanged
- Confidentiality impact
- High
- Integrity impact
- None
- Availability impact
- None
Weakness class (CWE)
CWE-22 · Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')CVSS vector
CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N
nvd-primary
Root cause
A user-supplied file name is joined with the allowed directory, but the result is never checked to confirm it is still inside that directory.
The bug in code
The whole CWE-22 classA representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.
Vulnerable
const file = path.join(ROOT, req.query.name);res.sendFile(file);Fixed
const file = path.resolve(ROOT, req.query.name);if (!file.startsWith(ROOT + path.sep)) { return res.sendStatus(400);}res.sendFile(file);Attack context
MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.
Attack patterns (CAPEC)
- Path TraversalCAPEC-126likelihood: High · Very High
- Using Slashes and URL Encoding Combined to Bypass Validation LogicCAPEC-64likelihood: High · High
- Manipulating Web Input to File System CallsCAPEC-76likelihood: High · Very High
- Using Escaped Slashes in Alternate EncodingCAPEC-78likelihood: High · High
- Using Slashes in Alternate EncodingCAPEC-79likelihood: High · High
ATT&CK techniques
—
Change log
No changes recorded on tracked fields yet. Score, KEV, exploit maturity and fix status changes appear here.
References
- www.securityfocus.com/bid/108001
- tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190417-air-ap-traversal
Vendor advisories and official records. Exploit/PoC links are deliberately left out.