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TI-2018-02931 Aliases CVE-2018-3963GHSA-665f-qp36-gp6g

Command injection in CUJO

Priority MEDIUM 40CWE-77Published · Updated

Key facts

Attack vector
Adjacent network
Privileges required
Low
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 3.1 · NVD. Fix status from CNA. Impact type from CWE-77.

Summary

An exploitable command injection vulnerability exists in the DHCP daemon configuration of the CUJO Smart Firewall. When adding a new static DHCP address, its corresponding hostname is inserted into the dhcpd.conf file without prior sanitization, allowing for arbitrary execution of system commands. To trigger this vulnerability, an attacker can send a DHCP request message and set up the corresponding static DHCP entry.

Why it matters now

EPSS 0.02612 85th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
—CUJOCUJO Smart Firewall - Firmware version 7003—No fix listedCNA
  • CUJO Vendor— Affected CUJO Smart Firewall - Firmware version 7003 Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:getcujo:smart_firewall:7003:*:*:*:*:*:*:*7003VulnerableGetcujo
  • cpe:2.3:a:getcujo:smart_firewall:7003:*:*:*:*:*:*:* Versions 7003 Vulnerable ·Getcujo

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2018-3963
  2. 2026-10-03 Alias added: GHSA-665f-qp36-gp6g

References

Exploit 1

  • TI-2018-02999 Code injection in CUJO CVSS 3.1CRITICAL 10.0
  • TI-2018-02971 Out-of-bounds write in CUJO CVSS 3.1CRITICAL 9.8
  • TI-2018-02953 Double free in CUJO CVSS 3.1CRITICAL 9.8
  • TI-2018-02979 Integer underflow in CUJO CVSS 3.1HIGH 7.5
  • TI-2018-02998 An exploitable vulnerability exists the safe browsing function of the CUJO Smart… CVSS 3.1HIGH 7.5
  • TI-2018-02937 OS command injection in CUJO CVSS 3.1HIGH 7.8

Sources

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