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CVE-2026-73783 Hewlett Packard Enterprise (HPE) CVE debrief

AI-assisted PatchSiren debrief based on the supplied source corpus. The CVE record was published on 2026-09-01T21:18:45.160Z and has not been modified since then. The NVD entry is currently Analyzed. This medium-severity vulnerability, CVE-2026-73783, exists in AOS-CX API endpoints and allows authenticated attackers to cause denial-of-service conditions via stack overflow. The vulnerability's impact includes potential disruption of network services. Network administrators and security teams managing AOS-CX systems should be aware of this vulnerability and take steps to mitigate potential risks. They should inventory and verify AOS-CX versions, apply vendor patches or updates if available, and monitor API traffic for suspicious activity. The CVE and NVD records provide details on the vulnerability but do not offer additional context or affected versions beyond CPE criteria. Evidence is limited to CVE and NVD records. Defenders should verify AOS-CX versions against CPE criteria and monitor API traffic for suspicious activity.

Vendor
Hewlett Packard Enterprise (HPE)
Product
AOS-CX
CVSS
MEDIUM 4.9
CISA KEV
Not listed in stored evidence
Original CVE published
2026-09-01
Original CVE updated
2026-09-04
Advisory published
2026-09-01
Advisory updated
2026-09-04

Who should care

Network administrators and security teams managing AOS-CX systems should be aware of this vulnerability and take steps to mitigate potential risks. They should inventory and verify AOS-CX versions, apply vendor patches or updates if available, and monitor API traffic for suspicious activity. Security teams should also implement additional security measures to detect and prevent exploitation.

Technical summary

CVE-2026-73783 is a medium-severity vulnerability in AOS-CX API endpoints, allowing authenticated attackers to cause denial-of-service conditions via stack overflow. The vulnerability is detailed in the CVE and NVD records, with CPE criteria outlining affected versions.

Defensive priority

Authenticated attackers could exploit this medium-severity denial-of-service vulnerability in AOS-CX API endpoints. Ensure authentication and monitor API traffic.

Recommended defensive actions

  • Inventory and verify AOS-CX versions against provided CPE criteria.
  • Apply vendor patches or updates if available.
  • Monitor API traffic for suspicious activity.
  • Restrict API endpoint access to necessary personnel.
  • Implement additional security measures to detect and prevent exploitation.

Evidence notes

The CVE and NVD records provide details on the vulnerability but do not offer additional context or affected versions beyond CPE criteria. The vulnerability is a stack overflow in AOS-CX API endpoints, allowing authenticated attackers to cause denial-of-service conditions. Evidence is limited to CVE and NVD records. Defenders should verify AOS-CX versions against CPE criteria and monitor API traffic for suspicious activity.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-73783 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-73783

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-73783 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-73783

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.