CVE-2026-76666
MEDIUM 4.7A security vulnerability in HPE NonStop EXPAND may result in out-of-bounds memory read.
NO EXPLOITATION SIGNALS
No known exploitation, public exploit, or elevated probability at this time. Track for changes.
Exploitation likelihood
0.1%chance of exploitation in 30 days · 1st percentile
○ In CISA KEV
○ Catalogued PoC
Impact if exploited
4.7CVSS 3.1 · MEDIUM
- ConfidentialityHigh
- IntegrityNone
- AvailabilityLow
What an attacker needs
- ⚠Access: Requires local access to the host
- ⚠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
No public PoC is currently catalogued.
Search for new PoCs
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Tracked sources are checked daily for recent CVEs, including PoCs published after the original disclosure. A later release appears after a tracked source lists it and a refresh succeeds.
Data snapshot:
Weakness (CWE)
- CWE-125: Out-of-bounds read
CVSS vector
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:N/A:L
References and research data (JSON)
All CVSS metrics
- MEDIUM 4.7 v3.1 · CNA Primary
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:N/A:L - MEDIUM 4.7 v3.1 · NVD Secondary
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:N/A:L
References
Advisories
- https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-101827 EUVD · EUVD-2026-101827
Technical & other
- https://support.hpe.com/hpesc/public/docDisplay?docId=hpesbns05148en_us&docLocale=en_USCVE record · hpe · Updated 2026-10-15T04:51:12.600Z
NVD · CVE-2026-76666 · Updated 2026-10-15T16:23:06.250