CVE-2026-11499Public exploitNetwork attack vector

Unauthenticated code execution via unchecked domain copy

Published Jun 8, 2026 · Updated Jun 8, 2026

Stack-based buffer overflow in Tenda HG10 300001138_en_xpon allows remote attackers to execute code via its web management interface. The formDOMAINBLK handler copies the user-controlled blkDomain value into a stack buffer without effective length validation, overwriting the stack frame. Unauthenticated access to the management interface is sufficient; exploitation can crash the Boa service or corrupt control flow for code execution.

CVSS severity9.3
Critical
EPSS probability6.56%
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 HG10 300001138_en_xpon allows remote attackers to execute code via its web management interface. The formDOMAINBLK handler copies the user-controlled blkDomain value into a stack buffer without effective length validation, overwriting the stack frame. Unauthenticated access to the management interface is sufficient; exploitation can crash the Boa service or corrupt control flow for code execution.

The record

CVE
CVE-2026-11499
Published
Jun 8, 2026
Updated
Jun 8, 2026
Vendor
Shenzhen Tenda Technology Co., Ltd.
Product
HG10
Classifications
CWE-121, CWE-119, T1499.004, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 8, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 8, 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=300001138_en_xpon

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Shenzhen Tenda Technology Co., Ltd. · HG10version=300001138_en_xpon

Published CVSS scores

10.0VulDB CNAAV:N/AC:L/Au:N/C:C/I:C/A:C
9.8VulDB CNACVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
9.3VulDB CNACVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

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
CWE-119Improper Restriction of Operations within the Bounds of a Memory Buffer
T1499.004Application or System Exploitation
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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