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

Source: https://junglewise.ai/threats/cve-2026-76746-an-unauthenticated-buffer-overflow-vulnerability-exists-in-aos-s  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-10-06. Updated: 2026-10-06  
License: CC BY 4.0 with a link back

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](https://junglewise.ai/threats/technologies/hpe-aos-s). Vendors: [Hpe](https://junglewise.ai/threats/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

- [https://support.hpe.com/hpesc/public/docDisplay?docId=hpesbnw05156en_us&docLocale=en_US](https://support.hpe.com/hpesc/public/docDisplay?docId=hpesbnw05156en_us&docLocale=en_US)

## Related threats

- [HPE AOS-S information disclosure](https://junglewise.ai/threats/cve-2026-76749-a-sensitive-information-disclosure-vulnerability-exists-in-aos-s)
- [HPE AOS-S API privilege escalation](https://junglewise.ai/threats/cve-2026-76748-a-privilege-escalation-vulnerability-exists-in-the-api-of-aos-s)
- [HPE AOS-S management interface authentication bypass](https://junglewise.ai/threats/cve-2026-76743-a-vulnerability-have-been-identified-in-the-management-interface)
- [HPE AOS-S buffer overflow in remote interface](https://junglewise.ai/threats/cve-2026-76741-buffer-overflow-vulnerabilities-exist-in-the-affected-interface)