Alcatel-Lucent I-240W-Q GPON ONT 3FE54567BOZJ19 HTTP POST Request memory corruption

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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A vulnerability, which was classified as critical, has been found in Alcatel-Lucent I-240W-Q GPON ONT 3FE54567BOZJ19. This issue affects an unknown code block of the file /GponForm/usb_Form?script/. The manipulation as part of a HTTP POST Request leads to a memory corruption vulnerability. Using CWE to declare the problem leads to CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

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.

The bug was discovered 02/27/2019. The weakness was shared 03/05/2019 (Website). It is possible to read the advisory at The identification of this vulnerability is CVE-2019-3921 since 01/03/2019. The attack may be initiated remotely. The requirement for exploitation is a simple authentication. Technical details of the vulnerability are known, but there is no available exploit.

The vulnerability was handled as a non-public zero-day exploit for at least 6 days. During that time the estimated underground price was around $0-$5k.

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

The entries 131340, 131338, 131337 and 131336 are related to this item.





CPE 2.3info

CPE 2.2info


VulDB Meta Base Score: 7.5
VulDB Meta Temp Score: 7.5

VulDB Base Score: 6.3
VulDB Temp Score: 6.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 8.8
NVD Vector: 🔍



VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍


Class: Memory corruption
CWE: CWE-119
ATT&CK: Unknown

Local: No
Remote: Yes

Availability: 🔍
Status: Proof-of-Concept
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍


Exploit-DB: 🔍

Threat Intelligenceinfo

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


Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍


01/03/2019 🔍
02/27/2019 +55 days 🔍
03/05/2019 +6 days 🔍
03/06/2019 +1 days 🔍
07/26/2023 +1603 days 🔍


Status: Not defined

CVE: CVE-2019-3921 (🔍)
See also: 🔍


Created: 03/06/2019 08:19 AM
Updated: 07/26/2023 02:21 PM
Changes: 03/06/2019 08:19 AM (56), 05/13/2020 06:34 PM (2), 07/26/2023 02:21 PM (3)
Complete: 🔍


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