CVE-2026-9430Network attack vector

Authenticated memory corruption via crafted dips value

Published May 25, 2026 · Updated May 25, 2026

Stack-based buffer overflow in Tenda F1202 1.2.0.20(408) allows remote authenticated users to corrupt memory via a crafted dips value. The formGstDhcpSetSer handler at /goform/GstDhcpSetSerof accepts the user-controlled dips parameter, but published material does not identify the unsafe copy operation or destination buffer. Low-privileged access to the management interface is required; the overflow affects the router process, while a reliable crash or code-execution outcome remains undisclosed.

CVSS severity8.8
High
EPSS probability0.44%
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 F1202 1.2.0.20(408) allows remote authenticated users to corrupt memory via a crafted dips value. The formGstDhcpSetSer handler at /goform/GstDhcpSetSerof accepts the user-controlled dips parameter, but published material does not identify the unsafe copy operation or destination buffer. Low-privileged access to the management interface is required; the overflow affects the router process, while a reliable crash or code-execution outcome remains undisclosed.

The record

CVE
CVE-2026-9430
Published
May 25, 2026
Updated
May 25, 2026
Vendor
Shenzhen Tenda Technology Co., Ltd.
Product
F1202
Classifications
CWE-121, CWE-119
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. May 25, 2026CVE publishedPublication date reported by the CVE source.
  2. May 25, 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=1.2.0.20(408)

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Shenzhen Tenda Technology Co., Ltd. · F1202version=1.2.0.20(408)

Published CVSS scores

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

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 exploitUnconfirmed

Weakness, pattern, technique

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

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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