CVE-2019-3921 - CVE House
Back to Database
Status published High CVE-2019-3921

The Alcatel Lucent I-240W-Q GPON ONT using firmware version 3FE54567BOZJ19...

Vulnerability Description

The Alcatel Lucent I-240W-Q GPON ONT using firmware version 3FE54567BOZJ19 is vulnerable to a stack buffer overflow via crafted HTTP POST request sent by a remote, authenticated attacker to /GponForm/usb_Form?script/. An attacker can leverage this vulnerability to potentially execute arbitrary code.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

THREAT MONITOR

Am I Vulnerable?

Launch our assessment wizard to check if your infrastructure is exposed to • CVE-2019-3921

Credits & Attribution

No credits recorded in the NVD database.

References

More from Tenable

View All →
CVE-2025-36640
Local Privilege Escalation
High 7.3
CVE-2025-36636
Improper Access Control
Medium 4.3
CVE-2025-36633
Local Privilege Escalation
High 8.8
CVE-2025-36632
Local Privilege Escalation
High 7.8
CVE-2025-36631
Local Privilege Escalation
High 8.4

Affected Vendor

Affected Software

Alcatel Lucent I-240W-Q GPON ONT
Vulnerable Versions:
Firmware version 3FE54567BOZJ19

Timeline

Official Publish: March 5th, 2019
Last Modified: September 17th, 2024
Added to House: July 20th, 2026

CVSS Vectors

V3: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Weaknesses (CWE)

CWE-121

MITRE ATT&CK TTPs

T1190 Exploit Public-Facing Application
Initial Access
T1068 Exploitation for Privilege Escalation
Privilege Escalation
T1055 Process Injection
Defense Evasion
T1105 Ingress Tool Transfer
Command and Control
T1485 Data Destruction
Impact