CVE-2024-25751Network attack vector

Unauthenticated code execution via unchecked timeZone length

Published Feb 26, 2024 · Updated Aug 27, 2024

Stack-based buffer overflow in Tenda AC9 3.0 firmware 15.03.06.42_multi allows remote attackers to execute arbitrary code. The fromSetSysTime handler passes the user-controlled timeZone parameter into a stack buffer without checking its length. No authentication or user interaction is required; a crafted request can crash the router or execute code in the management service.

CVSS severity9.8
Critical
EPSS probability0.98%
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 attackers to execute arbitrary code. The fromSetSysTime handler passes the user-controlled timeZone parameter into a stack buffer without checking its length. No authentication or user interaction is required; a crafted request can crash the router or execute code in the management service.

The record

CVE
CVE-2024-25751
Published
Feb 26, 2024
Updated
Aug 27, 2024
Vendor
Shenzhen Tenda Technology Co., Ltd.
Product
AC9
Classifications
CWE-121, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 26, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 27, 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 vectornetwork
Required privilegesunauthenticated

What is affected?

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

Published CVSS scores

9.8CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-121Stack-based Buffer Overflow
T1190Exploit Public-Facing Application

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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