CVE-2025-29384Public exploitNetwork attack vector

Unauthenticated code execution via unchecked wanMTU copy

Published Mar 14, 2025 · Updated Mar 19, 2025

Stack overflow in Tenda AC9 V1.0 firmware 15.03.05.14_multi allows remote attackers to execute arbitrary code via wanMTU. The sub_7345C routine passes the attacker-controlled wanMTU value to strcpy without checking the destination buffer's capacity, overwriting the stack. Unauthenticated network access to the router's web interface is sufficient; exploitation permits device takeover or a service crash.

CVSS severity9.8
Critical
EPSS probability1.94%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stack overflow in Tenda AC9 V1.0 firmware 15.03.05.14_multi allows remote attackers to execute arbitrary code via wanMTU. The sub_7345C routine passes the attacker-controlled wanMTU value to strcpy without checking the destination buffer's capacity, overwriting the stack. Unauthenticated network access to the router's web interface is sufficient; exploitation permits device takeover or a service crash.

The record

CVE
CVE-2025-29384
Published
Mar 14, 2025
Updated
Mar 19, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-787, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 14, 2025CVE publishedPublication date reported by the CVE source.
  2. Mar 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?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

9.8NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-787Out-of-bounds Write
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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