CVE-2026-79840
HIGH 7.3A buffer overflow vulnerability in HPE NonStop XABroker may cause memory corruption, resulting in application crash.
ELEVATED IMPACT
Severe if exploited (CVSS 7.3), 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
7.3CVSS 3.1 · HIGH
- ConfidentialityLow
- IntegrityLow
- AvailabilityHigh
What an attacker needs
- ⚠Access: Requires local access to the host
- ⚠Privileges: Requires a low-privilege account
- ⚠User interaction: A user must take an action (click / open a file)
- ✓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-121: Stack-based buffer overflow
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:H
References and research data (JSON)
All CVSS metrics
- HIGH 7.3 v3.1 · CNA Primary
CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:H - HIGH 7.3 v3.1 · NVD Secondary
CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:H
References
Advisories
- https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-102093 EUVD · EUVD-2026-102093
Technical & other
- https://support.hpe.com/hpesc/public/docDisplay?docId=hpesbns05148en_us&docLocale=en_USCVE record · hpe · Updated 2026-10-15T14:36:18.512Z
NVD · CVE-2026-79840 · Updated 2026-10-15T19:17:44.227