CVE-2026-76746: HPE AOS-S buffer overflow

CVE-2026-76746 · Severity: critical · CVSS 9.3 · Published 2026-10-06

AOS-S is network switching software used in enterprise data centers and network infrastructure. An unauthenticated attacker on an adjacent network can exploit a buffer overflow vulnerability to read sensitive memory contents or crash the device, disrupting network operations.

Technologies: Hpe AOS-S. Vendors: Hpe.

Quick answers

Is CVE-2026-76746 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-76746 being exploited in the wild.
How severe is CVE-2026-76746?
Critical severity, with a CVSS score of 9.3, published 6 October 2026.
Which products and versions are affected?
HPE AOS-S.
Is there a fix for CVE-2026-76746?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2026-76746 attacked?
It is attacked from the adjacent network, in an operating system.
Am I affected by CVE-2026-76746?
Check whether you run Hpe AOS-S. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

An unauthenticated buffer overflow vulnerability exists in AOS-S that can be triggered by an adjacent network attacker without requiring any credentials or user interaction. Successful exploitation allows an attacker to leak sensitive memory contents and trigger a denial of service condition on the affected device.

Affected products

  • HPE AOS-S

Timeline

  • 2026-10-06: disclosed

References

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