CVE-2026-8797: CWE-782: Exposed IOCTL with Insufficient Access Control in NEC Corporation ExpressUpdate Agent for Windows
CVE-2026-8797 is a high-severity vulnerability in NEC Corporation's ExpressUpdate Agent for Windows. It involves an access control deficiency where an exposed IOCTL interface lacks sufficient access restrictions. This flaw could allow a malicious user with local access to execute arbitrary code with SYSTEM privileges, leading to full system compromise. No patch or official remediation has been confirmed yet.
AI Analysis
Technical Summary
This vulnerability (CVE-2026-8797) in NEC Corporation's ExpressUpdate Agent for Windows is classified under CWE-782 (Exposed IOCTL with Insufficient Access Control). The issue arises from an IOCTL interface that does not enforce adequate access controls, enabling a local attacker with limited privileges to execute arbitrary code with SYSTEM-level privileges. The CVSS 4.0 base score is 8.5, reflecting high impact and exploitability under local attack vector with low complexity and no user interaction required. The vulnerability is published and assigned by NEC but currently lacks an official remediation or patch. There are no known exploits in the wild at this time.
Potential Impact
If exploited, this vulnerability allows a local attacker with some privileges on the affected system to escalate their privileges to SYSTEM level by executing arbitrary code. This can lead to complete system compromise, unauthorized access to sensitive data, and potential disruption of system operations.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, restrict local access to systems running the ExpressUpdate Agent for Windows and monitor for suspicious activity related to IOCTL usage. Follow NEC Corporation's advisories for updates on patches or mitigations.
CVE-2026-8797: CWE-782: Exposed IOCTL with Insufficient Access Control in NEC Corporation ExpressUpdate Agent for Windows
Description
CVE-2026-8797 is a high-severity vulnerability in NEC Corporation's ExpressUpdate Agent for Windows. It involves an access control deficiency where an exposed IOCTL interface lacks sufficient access restrictions. This flaw could allow a malicious user with local access to execute arbitrary code with SYSTEM privileges, leading to full system compromise. No patch or official remediation has been confirmed yet.
CVSS v4.0
Score 8.5high
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-8797) in NEC Corporation's ExpressUpdate Agent for Windows is classified under CWE-782 (Exposed IOCTL with Insufficient Access Control). The issue arises from an IOCTL interface that does not enforce adequate access controls, enabling a local attacker with limited privileges to execute arbitrary code with SYSTEM-level privileges. The CVSS 4.0 base score is 8.5, reflecting high impact and exploitability under local attack vector with low complexity and no user interaction required. The vulnerability is published and assigned by NEC but currently lacks an official remediation or patch. There are no known exploits in the wild at this time.
Potential Impact
If exploited, this vulnerability allows a local attacker with some privileges on the affected system to escalate their privileges to SYSTEM level by executing arbitrary code. This can lead to complete system compromise, unauthorized access to sensitive data, and potential disruption of system operations.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, restrict local access to systems running the ExpressUpdate Agent for Windows and monitor for suspicious activity related to IOCTL usage. Follow NEC Corporation's advisories for updates on patches or mitigations.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- NEC
- Date Reserved
- 2026-05-18T01:11:09.851Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a3e07994853345fc142c152
Added to database: 06/26/2026, 05:01:13 UTC
Last enriched: 06/26/2026, 05:15:58 UTC
Last updated: 06/26/2026, 10:26:29 UTC
Views: 78
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
External Links
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.