CVE-2025-7077Public exploitNetwork attack vector

Authenticated memory corruption via unchecked 3G credentials

Published Jul 6, 2025 · Updated Jul 7, 2025

Buffer overflow in LBT-T300-T310 firmware 2.2.3.0 through 2.2.3.6 allows remote authenticated users to corrupt device memory. The config_3g_para function in /appy.cgi copies oversized username_3g or password_3g form values without enforcing a length limit. Basic-authenticated access to the 3G WAN settings is required; the public artifact demonstrates memory corruption but not code execution or a repeatable crash.

CVSS severity8.8
High
EPSS probability0.98%
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 LBT-T300-T310 firmware 2.2.3.0 through 2.2.3.6 allows remote authenticated users to corrupt device memory. The config_3g_para function in /appy.cgi copies oversized username_3g or password_3g form values without enforcing a length limit. Basic-authenticated access to the 3G WAN settings is required; the public artifact demonstrates memory corruption but not code execution or a repeatable crash.

The record

CVE
CVE-2025-7077
Published
Jul 6, 2025
Updated
Jul 7, 2025
Vendor
Shenzhen Libituo Technology Co., Ltd.
Product
LBT-T300-T310
Classifications
CWE-119, CWE-120, T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 6, 2025CVE publishedPublication date reported by the CVE source.
  2. Jul 7, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=2.2.3.0
  2. Affected versionversion=2.2.3.1
  3. Affected versionversion=2.2.3.2
  4. Affected versionversion=2.2.3.3
  5. Affected versionversion=2.2.3.4
  6. Affected versionversion=2.2.3.5
  7. 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=2.2.3.0; version=2.2.3.1; version=2.2.3.2; version=2.2.3.3; version=2.2.3.4; version=2.2.3.5; version=2.2.3.6

Published CVSS scores

8.8[email protected]CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
8.8[email protected]CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
9.0[email protected]AV:N/AC:L/Au:S/C:C/I:C/A:C
7.4[email protected]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:X/V:X/RE:X/U:X

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.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-119Improper Restriction of Operations within the Bounds of a Memory Buffer
CWE-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
T1190Exploit Public-Facing Application

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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