CVE-2026-73793
HIGH 7.9HPE NonStop Middleware software has secret key handling and data deserialization vulnerability.
ELEVATED IMPACT
Severe if exploited (CVSS 7.9), but no known exploitation and low modeled probability. Patch on a normal cadence.
Exploitation likelihood
0.3%chance of exploitation in 30 days · 19th percentile
○ In CISA KEV
○ Catalogued PoC
Impact if exploited
7.9CVSS 3.1 · HIGH
- ConfidentialityLow
- 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
No public PoC is currently catalogued.
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Data snapshot:
Weakness (CWE)
- CWE-502: Deserialization of untrusted data
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:L/I:H/A:H
References and research data (JSON)
All CVSS metrics
- HIGH 7.9 v3.1 · CNA Primary
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:L/I:H/A:H - HIGH 7.9 v3.1 · NVD Secondary
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:L/I:H/A:H
References
Advisories
- https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-100948 EUVD · EUVD-2026-100948
Technical & other
- https://support.hpe.com/hpesc/public/docDisplay?docId=hpesbns05148en_us&docLocale=en_USCVE record · hpe · Updated 2026-10-14T09:38:03.947Z
NVD · CVE-2026-73793 · Updated 2026-10-14T17:19:09.547