Cyber Resilience

CVE-2026-28267

Medium

Published: 10 March 2026

Published
10 March 2026
Modified
19 May 2026
KEV Added
—
Patch
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CVSS Score v4 6.8 CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/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 0.0010 1.3th percentile
Risk Priority 35 floored blend · peak EPSS

Summary

CVE-2026-28267 is a medium-severity Incorrect Default Permissions (CWE-276) vulnerability in Daj (inferred from references). Its CVSS base score is 6.8 (Medium).

Operationally, exploitation aligns with the MITRE ATT&CK technique Services File Permissions Weakness (T1574.010); ranked at the 1.3th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

OWASP Top 10 for Web (2025)

A01:2025 Broken Access Control

EU & UK References

Vulnerability details

Multiple i-フィルター products are configured with improper file access permission settings. Files may be created or overwritten in the system directory or backup directory by a non-administrative user.

CWE(s)
CWE-276

Related Threats

MITRE ATT&CK Enterprise TechniquesAI

T1574.010 Services File Permissions Weakness Stealth
Adversaries may execute their own malicious payloads by hijacking the binaries used by services.
attack.mitre.org →
Why these techniques?

Improper default file permissions (CWE-276) explicitly allow non-admin write access to system/backup directories, matching the File System Permissions Weakness technique.

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

Affected Assets

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

Mitigating Controls

Likely Mitigating Controls AI

Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.

AC-1 Policy and Procedures
addresses: CWE-276

Access control policy can specify and enforce secure default permissions for resources.

AC-6 Least Privilege
addresses: CWE-276

Guides setting of default permissions to the minimum required level.

CM-1 Policy and Procedures
addresses: CWE-276

Establishes requirements for appropriate default permissions on system resources as part of configuration management.

CM-2 Baseline Configuration
addresses: CWE-276

Baseline establishment and updates on install/upgrade ensure correct default permissions rather than insecure ones.

CM-6 Configuration Settings
addresses: CWE-276

Requiring the most restrictive settings instead of defaults prevents incorrect default permissions on resources.

CM-9 Configuration Management Plan
addresses: CWE-276

Requires documented processes that include setting and maintaining correct default permissions for configuration items.

PE-1 Policy and Procedures
addresses: CWE-276

Requires addressing secure default permissions in physical and environmental protection controls.

PL-11 Baseline Tailoring
addresses: CWE-276

Tailoring explicitly overrides or scopes default permission assignments in the baseline to match the system's actual risk and operational needs.

References