CVE-2025-45427Public exploitNetwork attack vector

Remote code execution via unchecked strcpy

Published Apr 23, 2025 · Updated Apr 23, 2025

Stack-based buffer overflow in Tenda AC9 V1.0 firmware 15.03.05.14_multi allows remote attackers to execute arbitrary code over the network. The formWifiBasicSet handler passes the POST security parameter to strcpy without checking the destination buffer size, overwriting its stack buffer. CISA assesses that no privileges or user interaction are required; successful exploitation can also crash the router.

CVSS severity9.8
Critical
EPSS probability0.85%
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-based buffer overflow in Tenda AC9 V1.0 firmware 15.03.05.14_multi allows remote attackers to execute arbitrary code over the network. The formWifiBasicSet handler passes the POST security parameter to strcpy without checking the destination buffer size, overwriting its stack buffer. CISA assesses that no privileges or user interaction are required; successful exploitation can also crash the router.

The record

CVE
CVE-2025-45427
Published
Apr 23, 2025
Updated
Apr 23, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-121, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 23, 2025CVE publishedPublication date reported by the CVE source.
  2. Apr 23, 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

9.8CISA-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 exploitPublished

Weakness, pattern, technique

CWE-121Stack-based Buffer Overflow
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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