CVE-2025-3803Public exploitNetwork attack vector

Authenticated code execution via rebootDate stack overflow

Published Apr 19, 2025 · Updated Apr 21, 2025

Stack overflow in Tenda W12 and i24 3.0.0.4(2887) and 3.0.0.5(3644) allows remote authenticated users to execute code. The /bin/httpd cgiSysScheduleRebootSet handler accepts an oversized rebootDate value without enforcing the destination stack buffer's length. Low-privileged access to the web management interface is required; successful exploitation executes code in the device context or crashes httpd.

CVSS severity8.7
High
EPSS probability1.00%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

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Summary

What happened

Stack overflow in Tenda W12 and i24 3.0.0.4(2887) and 3.0.0.5(3644) allows remote authenticated users to execute code. The /bin/httpd cgiSysScheduleRebootSet handler accepts an oversized rebootDate value without enforcing the destination stack buffer's length. Low-privileged access to the web management interface is required; successful exploitation executes code in the device context or crashes httpd.

The record

CVE
CVE-2025-3803
Published
Apr 19, 2025
Updated
Apr 21, 2025
Vendor
Shenzhen Tenda Technology Co., Ltd.
Product
i24
Classifications
CWE-121, CWE-119, T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 19, 2025CVE publishedPublication date reported by the CVE source.
  2. Apr 21, 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=3.0.0.4(2887)
  2. Affected versionversion=3.0.0.5(3644)

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Shenzhen Tenda Technology Co., Ltd. · i24version=3.0.0.4(2887); version=3.0.0.5(3644)
Shenzhen Tenda Technology Co., Ltd. · W12version=3.0.0.4(2887); version=3.0.0.5(3644)

Published CVSS scores

9.0VulDBAV:N/AC:L/Au:S/C:C/I:C/A:C
8.8VulDBCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
8.8VulDBCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
8.7VulDBCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

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-121Stack-based 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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