NEC ExpressUpdate Agent on Windows exposed ioctl with insufficient access control

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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7.8$0-$5k3.21-

Summaryinfo

A vulnerability classified as critical was found in NEC ExpressUpdate Agent on Windows. Affected by this issue is some unknown functionality. Executing a manipulation can lead to exposed ioctl with insufficient access control. This vulnerability is tracked as CVE-2026-8797. The attack is restricted to local execution. No exploit exists.

Detailsinfo

A vulnerability classified as critical was found in NEC ExpressUpdate Agent on Windows (version unknown). This vulnerability affects an unknown function. The manipulation with an unknown input leads to a exposed ioctl with insufficient access control vulnerability. The CWE definition for the vulnerability is CWE-782. The product implements an IOCTL with functionality that should be restricted, but it does not properly enforce access control for the IOCTL. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

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.

The advisory is available at jpn.nec.com. This vulnerability was named CVE-2026-8797 since 05/18/2026. The exploitation appears to be easy. Local access is required to approach this attack. The technical details are unknown and an exploit is not available. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 06/26/2026).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-39623). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Vendor

Name

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 7.8
VulDB Meta Temp Score: 7.8

VulDB Base Score: 7.8
VulDB Temp Score: 7.8
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Exposed ioctl with insufficient access control
CWE: CWE-782
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: No

Availability: 🔒
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

05/18/2026 CVE reserved
06/26/2026 +39 days Advisory disclosed
06/26/2026 +0 days VulDB entry created
06/26/2026 +0 days VulDB entry last update

Sourcesinfo

Advisory: jpn.nec.com
Status: Confirmed

CVE: CVE-2026-8797 (🔒)
GCVE (CVE): GCVE-0-2026-8797
GCVE (VulDB): GCVE-100-374122
EUVD: 🔒

Entryinfo

Created: 06/26/2026 08:03
Updated: 06/26/2026 10:45
Changes: 06/26/2026 08:03 (63), 06/26/2026 10:45 (1)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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