CVE-2026-7034Public exploitNetwork attack vector

Remote code execution via unchecked GO parameter

Published Apr 26, 2026 · Updated Apr 26, 2026

Stack-based buffer overflow in Tenda FH1202 firmware 1.2.0.14(408) allows remote authenticated users to execute code via a crafted GO value. The formWrlExtraSet handler passes the user-controlled value to ask_to_reboot without a length check, where sprintf overruns stack buffer s_1. Low-privilege access to the router's HTTP management interface is required; exploitation can execute code in the httpd context or crash the service.

CVSS severity8.8
High
EPSS probability0.62%
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 FH1202 firmware 1.2.0.14(408) allows remote authenticated users to execute code via a crafted GO value. The formWrlExtraSet handler passes the user-controlled value to ask_to_reboot without a length check, where sprintf overruns stack buffer s_1. Low-privilege access to the router's HTTP management interface is required; exploitation can execute code in the httpd context or crash the service.

The record

CVE
CVE-2026-7034
Published
Apr 26, 2026
Updated
Apr 26, 2026
Vendor
Shenzhen Tenda Technology Co., Ltd.
Product
FH1202 Firmware
Classifications
CWE-119, CWE-121, T1210
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 26, 2026CVE publishedPublication date reported by the CVE source.
  2. Apr 26, 2026Record 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=1.2.0.14(408)

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Shenzhen Tenda Technology Co., Ltd. · FH1202 Firmwareversion=1.2.0.14(408)

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
8.8VulDBCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
9.0VulDBAV:N/AC:L/Au:S/C:C/I:C/A:C

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 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-119Improper Restriction of Operations within the Bounds of a Memory Buffer
CWE-121Stack-based Buffer Overflow
T1210Exploitation of Remote Services

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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