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TI-2026-01692 Aliases CVE-2026-2035GHSA-6q4c-4x29-76qv

OS command injection in Deciso OPNsense

Priority LOW 35CWE-78Published · Updated

Key facts

Attack vector
Adjacent network
Privileges required
High
User interaction
None
Attack complexity
Low
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 3.0 · CNA. Fix status from CNA. Impact type from CWE-78.

Summary

Deciso OPNsense diag_backup.php filename Command Injection Remote Code Execution Vulnerability. This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of Deciso OPNsense. Authentication is required to exploit this vulnerability. The specific flaw exists within the handling of backup configuration files. The issue results from the lack of proper validation of a user-supplied string before using it to execute a system call. An attacker can leverage this vulnerability to execute code in the context of root. Was ZDI-CAN-28131.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.0159 75th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
DecisoOPNsense25.7—No fix listedCNA
  • OPNsense VendorDeciso Affected 25.7 Fixed in — No fix listed CNA

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-2035
  2. 2026-10-03 Alias added: GHSA-6q4c-4x29-76qv

References

Advisory 1

Other 1

  • TI-2025-24331 Deciso OPNsense < 25.7.4 /interfaces_ppps_edit.php ptpid Stored XSS CVSS 4.0MEDIUM 5.1
  • TI-2025-12519 Path traversal in Deciso OPNsense CVSS 3.0MEDIUM 4.5

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences