CVE-2025-8019Public exploitNetwork attack vector

Authenticated memory corruption via unchecked WAN parameter

Published Jul 22, 2025 · Updated Jul 23, 2025

Buffer overflow in the LBT-T300-T310 2.2.3.6 management CGI allows remote authenticated users to corrupt device memory. The start_wan function accepts the wan_proto POST parameter without a length restriction after apply.cgi dispatches it through sub_40B6F0. The published payload requires a Basic-authenticated management session; public evidence demonstrates neither code execution nor a specific service failure.

CVSS severity8.8
High
EPSS probability0.78%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Buffer overflow in the LBT-T300-T310 2.2.3.6 management CGI allows remote authenticated users to corrupt device memory. The start_wan function accepts the wan_proto POST parameter without a length restriction after apply.cgi dispatches it through sub_40B6F0. The published payload requires a Basic-authenticated management session; public evidence demonstrates neither code execution nor a specific service failure.

The record

CVE
CVE-2025-8019
Published
Jul 22, 2025
Updated
Jul 23, 2025
Vendor
Shenzhen Libituo Technology Co., Ltd.
Product
LBT-T300-T310
Classifications
CWE-120, CWE-119, T1210
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 22, 2025CVE publishedPublication date reported by the CVE source.
  2. Jul 23, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=2.2.3.6

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Shenzhen Libituo Technology Co., Ltd. · LBT-T300-T310version=2.2.3.6

Published CVSS scores

8.8VulDBCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
7.4VulDBCVSS: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
9.0VulDBAV:N/AC:L/Au:S/C:C/I:C/A:C

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
CWE-119Improper Restriction of Operations within the Bounds of a Memory Buffer
T1210Exploitation of Remote Services

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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