Unauthenticated Arbitrary File Write Vulnerability Leads to Remote Code Execution in AOS-CX
An unauthenticated arbitrary file write vulnerability exists in an API endpoint of AOS-CX. Successful exploitation of this vulnerability allows an attacker to write arbitrary files to the underlying operating system, which could lead to remote code execution.
- Published
- Sep 1, 2026
- Updated
- Sep 22, 2026
- EPSS
- 0.5% · 38th percentile
- CWE
- CWE-22
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Report tools
Action score
35
Monitor
Low priority for now.
- CVSS
- 35 / 40 · 8.8 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 0 / 30 · 0.5%
CISA SSVC decision
- Exploitation
- none
- Automatable
- no
- Technical impact
- total
Vulnrichment: CISA's decision-tree inputs.
CNA vs NVD score
- NVD
- —
- CNA · hpe
- 8.8
- NVD has not scored this yet; the score shown is the CNA’s.
The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.
Affected systems
| Vendor | Product | CPE |
|---|---|---|
| hpe | arubaos-cx | cpe:2.3:o:hpe:arubaos-cx |
| hpe | aruba cx 10000-48y6c \(r8p13a\) | cpe:2.3:h:hpe:aruba_cx_10000-48y6c_\(r8p13a\) |
| hpe | aruba cx 10000-48y6c \(r8p14a\) | cpe:2.3:h:hpe:aruba_cx_10000-48y6c_\(r8p14a\) |
| hpe | aruba cx 10000-48y6c \(s0f98a\) | cpe:2.3:h:hpe:aruba_cx_10000-48y6c_\(s0f98a\) |
| hpe | aruba cx 10040 \(s4r58a\) | cpe:2.3:h:hpe:aruba_cx_10040_\(s4r58a\) |
| hpe | aruba cx 10040 32p \(s4r54a\) | cpe:2.3:h:hpe:aruba_cx_10040_32p_\(s4r54a\) |
| hpe | aruba cx 10040 32p \(s4r55a\) | cpe:2.3:h:hpe:aruba_cx_10040_32p_\(s4r55a\) |
| hpe | aruba cx 10040 32p \(s4r56a\) | cpe:2.3:h:hpe:aruba_cx_10040_32p_\(s4r56a\) |
| hpe | aruba cx 4100i 12-port \(jl817a\) | cpe:2.3:h:hpe:aruba_cx_4100i_12-port_\(jl817a\) |
| hpe | aruba cx 4100i 24-port \(jl818a\) | cpe:2.3:h:hpe:aruba_cx_4100i_24-port_\(jl818a\) |
| hpe | aruba cx 6000 12g \(r8n89a\) | cpe:2.3:h:hpe:aruba_cx_6000_12g_\(r8n89a\) |
| hpe | aruba cx 6000 12p \(r8n89b\) | cpe:2.3:h:hpe:aruba_cx_6000_12p_\(r8n89b\) |
and 144 more
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- hpe arubaos-cxbefore 10.10.1181
- hpe arubaos-cx10.13.0000 and later · before 10.13.1190
- hpe arubaos-cx10.16.0000 and later · before 10.16.1060
- hpe arubaos-cx10.17.0000 and later · before 10.17.1030
- hpe arubaos-cx10.18.0001
Versions reported by the vendor
Affected version ranges reported by the assigning authority (hpe). Independent of NVD's CPE analysis and usually ahead of it.
Hewlett Packard Enterprise (HPE) AOS-CX
- 10.18.0000 and later · up to and including 10.18.0001affected · semver
- 10.17.0000 and later · up to and including 10.17.1021affected · semver
- 10.16.0000 and later · up to and including 10.16.1051affected · semver
- 10.13.0000 and later · up to and including 10.13.1180affected · semver
- 10.10.0000 and later · up to and including 10.10.1180affected · semver
Same product
hpe: all recordsOther highest-scoring records for the same primary product.
- CVE-2026-73778Credential Manager Vulnerability Allows Unauthorized Administrative Access39Monitor
- CVE-2026-73749Unauthenticated Buffer Overflow Vulnerabilities lead to Remote Code Execution in AOS-CX39Monitor
- CVE-2026-23813Authentication Bypass in Web Interface allows Unauthenticated Admin Password Reset39Monitor
- CVE-2021-41001An authenticated remote code execution vulnerability was discovered in the AOS-CX Network Analytics Engine (NAE) in Aruba CX 6200F Switch Se36Monitor
- CVE-2021-41000Multiple authenticated remote code execution vulnerabilities were discovered in the AOS-CX command line interface in Aruba CX 6200F Switch S36Monitor
- CVE-2026-73782Unauthenticated Format String Vulnerability leads to Remote Code Execution in AOS-CX35Monitor
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.
- internal security researchHPE Networking.reporter
Variant candidates
Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.
- CVE-2026-737650 days apartAuthenticated Path Traversal Vulnerabilities Lead to Remote Code Execution in AOS-CX28Monitor
- CVE-2026-6345442 days apartAuthenticated Path Traversal Vulnerability Leads to Remote Code Execution in AOS-CX28Monitor
- CVE-2026-737600 days apartAuthenticated Path Traversal Vulnerability Leads to Remote Unauthorized Access to Files in AOS-CX26Monitor
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
The product’s vendor appears in a public program. Matched by name; verify the scope text in the program.
Technical details
Attack conditions
- Someone on the same network segment can trigger it.
- No account or password is required.
- No user action is required.
- No special conditions are required; it is repeatable.
If successful
- Confidentiality
- high · data can be read
- Integrity
- high · data or configuration can be modified
- Availability
- high · the service can be disrupted
- Attack vector
- Adjacent
- Attack complexity
- Low
- Privileges required
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality impact
- High
- Integrity impact
- High
- Availability impact
- High
Weakness class (CWE)
CWE-22 · Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')CVSS vector
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
nvd-secondary
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
—
Noroxi analysis
No Noroxi analysis for this record yet
We don't hand-write analysis for all 385,000+ vulnerabilities; 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 helpChange log
No changes recorded on tracked fields yet. Score, KEV, exploit maturity and fix status changes appear here.
References
Vendor advisories and official records. Exploit/PoC links are deliberately left out.