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PatchSiren cyber security CVE debrief

CVE-2026-76747 Hewlett Packard Enterprise (HPE) CVE debrief

CVE-2026-76747 is a critical unauthenticated buffer overflow vulnerability in AOS-S, allowing remote attackers to expose sensitive memory contents and cause denial of service. The vulnerability exists in the affected interface of AOS-S and has a CVSS score of 9.1. Defenders should assess exposure, prioritize remediation, and verify affected versions. This vulnerability could lead to potential exposure of sensitive memory contents, requiring verification of affected versions and data protection measures. It also could cause denial of service on the device, impacting network availability and requiring remediation to restore service. Urgent assessment and remediation of affected AOS-S

Vendor
Hewlett Packard Enterprise (HPE)
Product
AOS-Switch (AOS-S)
CVSS
CRITICAL 9.1
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 responsible for AOS-S installations, particularly those with internet-exposed interfaces, should assess exposure and prioritize remediation. Network administrators, security teams, and IT personnel managing AOS-S systems are relevant roles to consider.

Why it matters

CVE-2026-76747 is a critical buffer overflow vulnerability in AOS-S, allowing unauthenticated remote attackers to expose sensitive memory contents and cause denial of service. Defenders should assess exposure, prioritize remediation, and verify affected versions.

  • Potential exposure of sensitive memory contents, requiring verification of affected versions and data protection measures.
  • Denial of service on the device, impacting network availability and requiring remediation to restore service.
  • Need for urgent assessment and remediation of affected AOS-S systems to prevent potential exploitation.

Technical summary

CVE-2026-76747 is a critical buffer overflow vulnerability in AOS-S, allowing unauthenticated remote attackers to expose sensitive memory contents and cause denial of service. The vulnerability exists in the affected interface of AOS-S and has a CVSS score of 9.1.

Defensive priority

High

Recommended defensive actions

  • Assess exposure of AOS-S installations, particularly versions 16.11.0000 and earlier, to this vulnerability.
  • Prioritize remediation of affected AOS-S systems, focusing on those with internet-exposed interfaces.
  • Verify affected versions and apply patches or updates as available from Hewlett Packard Enterprise (HPE).
  • Monitor network and system logs for potential exploitation attempts.

Evidence notes

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

Sources and references

Verified primary and authoritative sources

  • CVE-2026-76747 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-76747

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

  • CVE-2026-76747 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-76747

    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.