Buffer overflow in Shenzhen Libituo Technology Lbt-T300-Hw1
CVE-2026-7674
A flaw has been found in Shenzhen Libituo Technology LBT-T300-HW1 up to 1.2.8. This issue affects the function start_single_service of the component Web Management Interface. Executing a manipulation of the argument vpn_pptp_server/vpn_l2tp_server can lead to buffer overflow. The attack can be executed remotely. The vendor was contacted early about this disclosure but did not respond in any way.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.008 (55.1th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 55th percentile — 55.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.008 · change: +0.003
Affected products
- Shenzhen Libituo Technology Lbt-T300-Hw1 — versions 1.2.0, 1.2.1, 1.2.2
Weakness classification (CWE)
References
- vuldb.com/vuln/360827 (technical-description, vdb-entry)
- vuldb.com/vuln/360827/cti (signature, permissions-required)
- vuldb.com/submit/800705 (third-party-advisory)
- vuldb.com/submit/800706 (third-party-advisory)
- github.com/hmKunlun/lbt-t300-hw1/blob/main/reselov_vpn_server（vpn_pptp_server）… (related)
Frequently asked questions
- What is CVE-2026-7674?
- CVE-2026-7674 is a high-severity vulnerability in Shenzhen Libituo Technology Lbt-T300-Hw1, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 8.8/10. Published 2026-05-03.
- How severe is CVE-2026-7674?
- High severity. CVSS v3 base score is 8.8 out of 10.