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CVE-2026-76729

MEDIUM 6.6

Published 2026-09-29 · Last modified 2026-10-01

A format string vulnerability in the API endpoint of HPE Networking Instant ON APs could allow an authenticated remote attacker with high privileges to cause memory corruption with a modified input. Successful exploitation could allow an attacker to provoke a denial-of-service condition or remote code execution in the affected system function.

NO EXPLOITATION SIGNALS

No known exploitation, public exploit, or elevated probability at this time. Track for changes.

Exploitation likelihood

0.4%chance of exploitation in 30 days · 35th percentile

○ In CISA KEV ○ Public exploit / PoC

Impact if exploited

6.6CVSS 3.1 · MEDIUM

  • ConfidentialityHigh
  • IntegrityHigh
  • AvailabilityHigh

What an attacker needs

  • ✓Access: Reachable over the network — no local access needed
  • ⚠Privileges: Requires an admin / high-privilege account
  • ✓User interaction: No user interaction needed
  • ⚠Complexity: Needs a race window or specific setup

✓ lowers the bar for an attacker · ⚠ raises it

Proof of concept & exploit code

Test against your own equipment

curl -s https://vulnpedia.com/cve/CVE-2026-76729/poc.jsonMachine-readable PoC index for this CVE (for automation).

Listed for defensive triage, patch verification, and authorized testing on systems you own. Machine-readable: /cve/CVE-2026-76729/poc.json

Affected

Vendors Hewlett Packard Enterprise (Hpe)

Products Instant On

Weakness (CWE)

  • CWE-134: Use of Externally-Controlled Format String

CVSS vector

CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H

All CVSS metrics

  • MEDIUM 6.6 v3.1 · CNA Primary
    CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
  • MEDIUM 6.6 v3.1 · NVD Secondary
    CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H

References

Technical & other

Sources: NVD · CVE.org · EPSS