CVE-2026-73761 — Unauthenticated Out-of-Bounds Read Vulnerability leads to Information Disclosure in AOS-CX
An out-of-bounds read vulnerability exists in the underlying operating system of AOS-CX that could lead to unauthenticated information disclosure by sending a specially crafted packet. Successful exploitation of this vulnerability results in the ability to disclose sensitive information from the underlying operating system.
Who exploits it and how urgent it is
A 0–100 score combining confirmed exploitation, ransomware and APT use, public exploits, EPSS and severity.
How the score was calculated
- EPSS 0.3% (30-day exploitation probability)+3
- Technical severity (medium)+3
The score orders the patch queue; it does not replace your asset context (internet exposure, criticality, compensating controls).
Triage
Is it exploited, how likely is exploitation, what does it touch, and how severe do the sources call it.
CISA SSVC assessment CISA
Three decision points CISA publishes for the CVEs it assesses (SSVC 2.0.3). A stakeholder decision, not a severity score.
Remediation
Fixes and mitigations documented by the sources — linked to the original advisory.
- Documented patch — support.hpe.com (NIST National Vulnerability Database)
First 24 hours
Ordered from the record’s own fields — exposure first, because you cannot patch what you have not found. A rule-generated starting point.
- Identify exposed assets running the affected vendor/product/version combinations (Hewlett Packard Enterprise (HPE) AOS-CX, Hpe Arubaos-cx).
- Apply the fixed version or the patch documented under Remediation.
- Search available logs for exploit probes matching the vulnerability class (memory corruption), errors and authentication anomalies.
Affected scope
Vendor, product and versions as the sources word them.
| Vendor | Product | Versions | Status | Source |
|---|---|---|---|---|
| Hewlett Packard Enterprise (HPE) | AOS-CX | ≥ 10.18.0000 and ≤ 10.18.0001≥ 10.17.0000 and ≤ 10.17.1021≥ 10.16.0000 and ≤ 10.16.1051≥ 10.13.0000 and ≤ 10.13.1180≥ 10.10.0000 and ≤ 10.10.1180 | Vulnerable | CVE Program (cve.org) e CISA ADP |
| Hpe | Arubaos-cx | ≤ 10.10.1180≥ 10.13.0000 and ≤ 10.13.1180≥ 10.16.0000 and ≤ 10.16.1051≥ 10.17.0000 and ≤ 10.17.1021version 10.18.0001 | Vulnerable | NIST National Vulnerability Database |
Attack characteristics
The CVSS vector, decoded. It describes the attack, not your exposure to it.
Every base score collected
Sources score independently and may disagree; each row says who scored it and under which version.
| Score | Version | Severity | Expl. | Impact | Scored by |
|---|---|---|---|---|---|
| 6.5 | CVSS 3.1 | Medium | 2.8 | 3.6 | security-alert@hpe.com via NIST National Vulnerability Database |
| 6.5 | CVSS 3.1 | Medium | — | — | hpe via CVE Program (cve.org) e CISA ADP |
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N (score shown at the top: security-alert@hpe.com) Weakness MITRE
Weakness class according to MITRE’s CWE catalog.
Detection
Read off the CVSS vector and the weakness class. Starting points, not tested rules.
- Correlate service crashes/restarts with inbound traffic; repeated crashes may indicate attempts.
Timeline
What happened to this CVE, newest first.
- 2026
- Affected products added · hewlett packard enterprise (hpe)/aos-cx
- SSVC assessment updated
- Record published
- Fix documented
- CVSS changed · 6.5
- Source status changed · → Analyzed
- Record created in this database
- CVE published
Source activity
Repeated readings are counted rather than listed.
- 1× Official description updated · Oct 15, 2026 – Oct 15, 2026
References
1 on the record
Elsewhere on this site
Related CVEs (same products)
- Medium CVE-2026-73783 Authenticated Stack Overflow Vulnerabilities lead to Denial-of-Service in AOS-CX Sep 1, 2026
- High CVE-2026-73782 Unauthenticated Format String Vulnerability leads to Remote Code Execution in AOS-CX Sep 1, 2026
- High CVE-2026-73777 Authorization Bypass Vulnerabilities Leading to Privilege Escalation in AOS-CX API Endpoint Sep 1, 2026
- High CVE-2026-73776 Authenticated Signature Verification Bypass Leading to Arbitrary Code Execution in AOS-CX Sep 1, 2026
- High CVE-2026-73775 Authenticated Sensitive Information Disclosure Vulnerabilities in AOS-CX Sep 1, 2026
- High CVE-2026-73774 Unauthenticated Buffer Overflow Vulnerability leads to Sensitive Information Disclosure in AOS-CX Sep 1, 2026
Not in any source we poll
Listed rather than left blank: an empty field and an unmeasured one look identical on screen, and only one is a reason to look elsewhere.
- No confirmed IOCs, IP addresses, domains, file hashes, or malware artifacts supplied.
- No organization-specific asset inventory, compensating-control status, or patch deployment evidence supplied.
- No exploit packet captures, log samples, or incident case IDs supplied.
Answered from this record
Text assembled only from the fields above — no additional claims.
What should defenders know first?
CVE-2026-73761 is "Unauthenticated Out-of-Bounds Read Vulnerability leads to Information Disclosure in AOS-CX", rated Medium. It affects AOS-CX (Hewlett Packard Enterprise (HPE)); versions are in the scope table. It is not in CISA KEV, which does not rule out exploitation. CVSS 6.5 describes technical severity. EPSS 0.28% estimates the probability of exploitation in 30 days; neither replaces your asset context. First verify whether exposed or business-critical assets run the affected versions, apply vendor fixes or mitigations, and preserve logs for review.
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