CVE-2025-4867Public exploitNetwork attack vector

Repeater freeze via oversized form parameter

Published May 18, 2025 · Updated May 19, 2025

Denial of service in Tenda A15 15.13.07.13 allows remote authenticated users to freeze the repeater with a crafted HTTP POST request. The formArpNerworkSet handler passes an attacker-controlled, oversized form parameter to websDone, causing sustained CPU occupancy while processing the request. Successful exploitation requires management-interface access and leaves the device website inaccessible while the repeater is frozen.

CVSS severity7.1
High
EPSS probability0.75%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Denial of service in Tenda A15 15.13.07.13 allows remote authenticated users to freeze the repeater with a crafted HTTP POST request. The formArpNerworkSet handler passes an attacker-controlled, oversized form parameter to websDone, causing sustained CPU occupancy while processing the request. Successful exploitation requires management-interface access and leaves the device website inaccessible while the repeater is frozen.

The record

CVE
CVE-2025-4867
Published
May 18, 2025
Updated
May 19, 2025
Vendor
Shenzhen Tenda Technology Co., Ltd.
Product
A15
Classifications
CWE-404, T1499
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. May 18, 2025CVE publishedPublication date reported by the CVE source.
  2. May 19, 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=15.13.07.13

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Shenzhen Tenda Technology Co., Ltd. · A15version=15.13.07.13

Published CVSS scores

6.5VulDB CNACVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
6.5VulDB CNACVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
7.1VulDB CNACVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
6.8VulDB CNAAV:N/AC:L/Au:S/C:N/I:N/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-404Improper Resource Shutdown or Release
T1499Endpoint Denial of Service

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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