CVE-2026-79826
HIGH 7.1A heap buffer overflow in HPE NonStop OCAX could corrupt address space and may potentially redirect execution flow.
ELEVATED IMPACT
Severe if exploited (CVSS 7.1), but no known exploitation and low modeled probability. Patch on a normal cadence.
Exploitation likelihood
0.1%chance of exploitation in 30 days · 1st percentile
○ In CISA KEV
○ Catalogued PoC
Impact if exploited
7.1CVSS 3.1 · HIGH
- ConfidentialityNone
- IntegrityHigh
- AvailabilityHigh
What an attacker needs
- ⚠Access: Requires local access to the host
- ⚠Privileges: Requires a low-privilege account
- ✓User interaction: No user interaction needed
- ✓Complexity: No special conditions — reliably repeatable
✓ lowers the bar for an attacker · ⚠ raises it
Proof of concept
No public PoC is currently catalogued.
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Data snapshot:
Weakness (CWE)
- CWE-122: Heap-based buffer overflow
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
References and research data (JSON)
All CVSS metrics
- HIGH 7.1 v3.1 · CNA Primary
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H - HIGH 7.1 v3.1 · NVD Secondary
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
References
Advisories
- https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-101992 EUVD · EUVD-2026-101992
Technical & other
- https://support.hpe.com/hpesc/public/docDisplay?docId=hpesbns05148en_us&docLocale=en_USCVE record · hpe · Updated 2026-10-15T09:38:56.641Z
NVD · CVE-2026-79826 · Updated 2026-10-15T16:23:06.250