CVE-2025-5609Public exploitNetwork attack vector

Authenticated memory corruption via crafted LAN mask

Published Jun 4, 2025 · Updated Jun 4, 2025

Buffer overflow in Tenda AC18 15.03.05.05 allows remote authenticated users to corrupt memory through a crafted LAN mask request. The fromadvsetlanip handler processes the lanMask argument at /goform/AdvSetLanip without enforcing the destination buffer's bounds. A low-privileged management session is required, and the published evidence demonstrates an overflow trigger rather than code execution.

CVSS severity8.8
High
EPSS probability0.96%
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 AC18 15.03.05.05 allows remote authenticated users to corrupt memory through a crafted LAN mask request. The fromadvsetlanip handler processes the lanMask argument at /goform/AdvSetLanip without enforcing the destination buffer's bounds. A low-privileged management session is required, and the published evidence demonstrates an overflow trigger rather than code execution.

The record

CVE
CVE-2025-5609
Published
Jun 4, 2025
Updated
Jun 4, 2025
Vendor
Shenzhen Tenda Technology Co., Ltd.
Product
AC18
Classifications
CWE-120, CWE-119
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 4, 2025CVE publishedPublication date reported by the CVE source.
  2. Jun 4, 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=15.03.05.05

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Shenzhen Tenda Technology Co., Ltd. · AC18version=15.03.05.05

Published CVSS scores

8.7VulDB 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
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

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

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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