PatchSiren

PatchSiren cyber security CVE debrief

CVE-2026-76746 Hewlett Packard Enterprise (HPE) CVE debrief

CVE-2026-76746 is a critical unauthenticated adjacent buffer overflow vulnerability in AOS-S, potentially allowing attackers to expose sensitive memory contents and cause denial of service. Defenders should assess exposure, prioritize remediation, and verify affected versions. The vulnerability's high CVSS score of 9.3 and potential for sensitive information disclosure and denial of service necessitate prompt assessment and remediation. Security teams must review the vulnerability details, assess the potential impact on their environments, and take immediate action to protect against potential exploitation.

Vendor
Hewlett Packard Enterprise (HPE)
Product
AOS-Switch (AOS-S)
CVSS
CRITICAL 9.3
CISA KEV
Not listed in stored evidence
Original CVE published
2026-10-06
Original CVE updated
2026-10-07
Advisory published
2026-10-06
Advisory updated
2026-10-07

Who should care

Defenders and security teams responsible for AOS-S installations should assess exposure and prioritize remediation due to the critical nature of the vulnerability.

Why it matters

CVE-2026-76746 is a critical vulnerability in AOS-S that requires immediate attention from defenders and security teams. The vulnerability's high CVSS score and potential for sensitive information disclosure and denial of service necessitate prompt assessment and remediation.

  • Potential exposure of sensitive memory contents
  • Possible denial of service on affected devices
  • Need for verification of affected versions and remediation steps
  • Priority for inventory checks and monitoring

Technical summary

CVE-2026-76746 is an unauthenticated adjacent buffer overflow vulnerability in AOS-S, potentially allowing attackers to expose sensitive memory contents and cause denial of service. The vulnerability has a critical CVSS score of 9.3 and requires immediate attention from defenders and security teams. It is essential to verify affected versions, apply patches or updates as available, and monitor for potential exploitation attempts and anomalies.

Defensive priority

High priority for inventory checks and remediation due to critical CVSS score and potential for sensitive information disclosure.

Recommended defensive actions

  • Inventory AOS-S installations to identify potential exposure
  • Verify affected versions and apply patches or updates as available
  • Monitor for potential exploitation attempts and anomalies

Evidence notes

The CVE record and source item provide details on the vulnerability, but specific affected versions and remediation steps require verification from official sources.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-76746 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-76746

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

  • CVE-2026-76746 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-76746

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

Supplemental references

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.