CVE-2025-8180Network attack vector

Memory corruption via oversized old_account parameter

Published Jul 26, 2025 · Updated Jul 28, 2025

Buffer overflow in Tenda CH22 Firmware 1.0.0.1 allows remote authenticated users to corrupt memory via the old_account parameter. The formdeleteUserName handler at /goform/deleteUserName copies old_account without checking its size, overflowing an internal buffer whose identity is not public. Low-privilege access to the network management interface is required; exploitation can compromise device confidentiality, integrity, and availability, but no code-execution result is documented.

CVSS severity8.8
High
EPSS probability8.46%
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 CH22 Firmware 1.0.0.1 allows remote authenticated users to corrupt memory via the old_account parameter. The formdeleteUserName handler at /goform/deleteUserName copies old_account without checking its size, overflowing an internal buffer whose identity is not public. Low-privilege access to the network management interface is required; exploitation can compromise device confidentiality, integrity, and availability, but no code-execution result is documented.

The record

CVE
CVE-2025-8180
Published
Jul 26, 2025
Updated
Jul 28, 2025
Vendor
Shenzhen Tenda Technology Co., Ltd.
Product
CH22 Firmware
Classifications
CWE-119, CWE-120, T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 26, 2025CVE publishedPublication date reported by the CVE source.
  2. Jul 28, 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=1.0.0.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Shenzhen Tenda Technology Co., Ltd. · CH22 Firmwareversion=1.0.0.1

Published CVSS scores

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

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 exploitUnconfirmed

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

No public exploit references are available in this record.

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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