What is CVE-2024-40536?

CVE-2024-40536 is a medium-severity vulnerability in Szlbt Lbt-T300-T400, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 5.3/10. Published 2024-07-16.

How severe is CVE-2024-40536?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Buffer overflow in Szlbt Lbt-T300-T400

CVE-2024-40536

Shenzhen Libituo Technology Co., Ltd LBT-T300-T400 v3.2 were discovered to contain a stack overflow via the pin_3g_code parameter in the config_3g_para function.

Vulnerability class: Buffer Overflow

Published 2024-07-16 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L.

EPSS exploit prediction

EPSS: 0.004 (36.3th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 36th percentile — 36.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000

Affected products

Szlbt Lbt-T300-T400
Szlbt Lbt-T300-T400 Firmware — versions 3.2

Weakness classification (CWE)

CWE-120 — Buffer Copy without Checking Size of Input (Classic Buffer Overflow)

References

github.com/tt01bolt/vul/blob/main/LBT-T300-T400_Buffer overflow.md (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2024-40536?: CVE-2024-40536 is a medium-severity vulnerability in Szlbt Lbt-T300-T400, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 5.3/10. Published 2024-07-16.
How severe is CVE-2024-40536?: Medium severity. CVSS v3 base score is 5.3 out of 10.