CVE-2024-25756

Authenticated code execution via unbounded security_5g input

Published Feb 22, 2024 · Updated Aug 1, 2024

Stack-based buffer overflow in Tenda AC9 3.0 firmware 15.03.06.42_multi allows remote authenticated users to execute arbitrary code. The formWifiBasicSet handler passes the user-controlled security_5g parameter into a stack buffer without checking its length. An authenticated user on an adjacent network can send an oversized value to crash the router or execute code in the firmware context.

CVSS severity8.0
High
EPSS probability0.57%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stack-based buffer overflow in Tenda AC9 3.0 firmware 15.03.06.42_multi allows remote authenticated users to execute arbitrary code. The formWifiBasicSet handler passes the user-controlled security_5g parameter into a stack buffer without checking its length. An authenticated user on an adjacent network can send an oversized value to crash the router or execute code in the firmware context.

The record

CVE
CVE-2024-25756
Published
Feb 22, 2024
Updated
Aug 1, 2024
Vendor
Shenzhen Tenda Technology Co., Ltd.
Product
AC9
Classifications
CWE-121, T1210
Attack vector
adjacent
Privileges
authenticated

Timeline

How it unfolded

  1. Feb 22, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 1, 2024Record 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=15.03.06.42_multi

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesauthenticated

What is affected?

Shenzhen Tenda Technology Co., Ltd. · AC9version=15.03.06.42_multi

Published CVSS scores

8.0CISA-ADPCVSS:3.1/AV:A/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)
Vectoradjacent
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-121Stack-based Buffer Overflow
T1210Exploitation of Remote Services

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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