CVE-2025-6112Public exploitNetwork attack vector

Authenticated memory corruption via crafted lanMask

Published Jun 16, 2025 · Updated Jun 16, 2025

Buffer overflow in Tenda FH1205 2.0.0.7 allows remote authenticated users to corrupt memory through a crafted lanMask POST parameter. The fromadvsetlanip function in /goform/AdvSetLanip processes attacker-controlled lanMask data without sufficient bounds enforcement, overflowing a buffer. Low-privileged management access is required, and successful exploitation can compromise router data, execution integrity, and service availability.

CVSS severity8.8
High
EPSS probability1.20%
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 Tenda FH1205 2.0.0.7 allows remote authenticated users to corrupt memory through a crafted lanMask POST parameter. The fromadvsetlanip function in /goform/AdvSetLanip processes attacker-controlled lanMask data without sufficient bounds enforcement, overflowing a buffer. Low-privileged management access is required, and successful exploitation can compromise router data, execution integrity, and service availability.

The record

CVE
CVE-2025-6112
Published
Jun 16, 2025
Updated
Jun 16, 2025
Vendor
Shenzhen Tenda Technology Co., Ltd.
Product
FH1205
Classifications
CWE-120, CWE-119, T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 16, 2025CVE publishedPublication date reported by the CVE source.
  2. Jun 16, 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=2.0.0.7

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Shenzhen Tenda Technology Co., Ltd. · FH1205version=2.0.0.7

Published CVSS scores

8.8VulDB CNACVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
9.0VulDB CNAAV:N/AC:L/Au:S/C:C/I:C/A:C
7.4VulDB CNACVSS: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 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
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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