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Vulnerability record · CVE-2025-8019 · published 22 July 2025

CVE-2025-8019: Szlbt lbt-t300-t310 firmware memory buffer overflow vulnerability

Szlbt · Lbt T300 T310 Firmware

A vulnerability was found in Shenzhen Libituo Technology LBT-T300-T310 2.2.3.6. It has been rated as critical. Affected by this issue is the function sub_40B6F0 of the file at/appy.cgi. The manipulation of the argument wan_proto leads to buffer overflow. The attack may be launched remotely. The exploit has been disclosed to the public and may be used.

7.4 CVSS 4.0 High EPSS 0.82% · top 44.7% CWE-119 · Memory buffer overflowCWE-120 · Classic buffer overflow
7.4CVSS 4.0 base score, v2 9.0
0.82%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
7References, 4 tagged exploit
17 Jun 2026Last modified by NVD

Description

A vulnerability was found in Shenzhen Libituo Technology LBT-T300-T310 2.2.3.6. It has been rated as critical. Affected by this issue is the function sub_40B6F0 of the file at/appy.cgi. The manipulation of the argument wan_proto leads to buffer overflow. The attack may be launched remotely. The exploit has been disclosed to the public and may be used.

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/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:

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/turing-wue/IoT-vul/blob/main/LBT-T300/README.md ExploitThird Party Advisory
https://github.com/turing-wue/IoT-vul/blob/main/LBT-T300/README.md#payload Exploit
https://vuldb.com/?ctiid.317222 Permissions RequiredVDB Entry
https://vuldb.com/?id.317222 Third Party AdvisoryVDB Entry
https://vuldb.com/?submit.619530 Third Party AdvisoryVDB Entry
https://github.com/turing-wue/IoT-vul/blob/main/LBT-T300/README.md ExploitThird Party Advisory
https://github.com/turing-wue/IoT-vul/blob/main/LBT-T300/README.md#payload Exploit

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2025-8019), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.