Cyber Resilience

CVE-2026-8797

High

Published: 26 June 2026

Published
26 June 2026
Modified
26 June 2026
KEV Added
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Patch
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CVSS Score v4 8.5 CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
EPSS Score 0.0012 2.3th percentile
Risk Priority 55 floored blend · peak EPSS

Summary

CVE-2026-8797 is a high-severity Exposed IOCTL with Insufficient Access Control (CWE-782) vulnerability in Nec (inferred from references). Its CVSS base score is 8.5 (High).

Operationally, exploitation aligns with the MITRE ATT&CK technique Exploitation for Privilege Escalation (T1068); ranked at the 2.3th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

EU & UK References

Vulnerability details

An access control deficiency vulnerability exists in ExpressUpdate Agent for Windows. If a malicious user gains access to the product, arbitrary code could be executed with SYSTEM privileges.

CWE(s)
CWE-782

Related Threats

MITRE ATT&CK Enterprise TechniquesAI

T1068 Exploitation for Privilege Escalation Privilege Escalation
Adversaries may exploit software vulnerabilities in an attempt to elevate privileges.
attack.mitre.org →
Why these techniques?

Access control deficiency directly enables local privilege escalation to SYSTEM via arbitrary code execution (T1068).

Confidence: HIGH · MITRE ATT&CK Enterprise v19.0

Affected Assets

Nec
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inferred from references and description; NVD did not file a CPE for this CVE

Mitigating Controls

No mitigating controls mapped yet. The per-CVE control annotator has not reached this CVE.

References