CVE-2025-7419Public exploitNetwork attack vector

Device crash via unchecked destIP stack copy

Published Jul 10, 2025 · Updated Jul 11, 2025

Stack-based buffer overflow in Tenda O3V2 1.0.0.12(3880) allows remote authenticated users to crash the device via a crafted destIP value. The fromSpeedTestSet handler for /goform/setRateTest copies the unbounded destIP parameter into a stack-local buffer, overwriting its return address. The published proof of concept requires a logged-in web session and demonstrates persistent httpd service failure; code execution is claimed but not demonstrated.

CVSS severity8.8
High
EPSS probability0.82%
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 O3V2 1.0.0.12(3880) allows remote authenticated users to crash the device via a crafted destIP value. The fromSpeedTestSet handler for /goform/setRateTest copies the unbounded destIP parameter into a stack-local buffer, overwriting its return address. The published proof of concept requires a logged-in web session and demonstrates persistent httpd service failure; code execution is claimed but not demonstrated.

The record

CVE
CVE-2025-7419
Published
Jul 10, 2025
Updated
Jul 11, 2025
Vendor
Shenzhen Tenda Technology Co., Ltd.
Product
O3
Classifications
CWE-121, CWE-119, T1499.004
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 10, 2025CVE publishedPublication date reported by the CVE source.
  2. Jul 11, 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=1.0.0.12(3880)

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Shenzhen Tenda Technology Co., Ltd. · O3version=1.0.0.12(3880)

Published CVSS scores

7.4VulDBCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P
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

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
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
T1499.004Application or System Exploitation

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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