CVE-2023-51101Public exploitNetwork attack vector

Unauthenticated command execution via uplink stack overflow

Published Dec 26, 2023 · Updated Apr 23, 2025

Stack overflow in Tenda W9 firmware 1.0.0.7(4456)_CN allows remote attackers to execute commands through a crafted uplink request. The formSetUplinkInfo handler processes an oversized pingHostIp2 value at /goform/setUplinkInfo without enforcing stack-buffer bounds. Network access to the management endpoint is required; official metrics require no privileges, although the published proof of concept sends an admin-valued cookie.

CVSS severity9.8
Critical
EPSS probability0.70%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stack overflow in Tenda W9 firmware 1.0.0.7(4456)_CN allows remote attackers to execute commands through a crafted uplink request. The formSetUplinkInfo handler processes an oversized pingHostIp2 value at /goform/setUplinkInfo without enforcing stack-buffer bounds. Network access to the management endpoint is required; official metrics require no privileges, although the published proof of concept sends an admin-valued cookie.

The record

CVE
CVE-2023-51101
Published
Dec 26, 2023
Updated
Apr 23, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-787, T1210
Attack vector
network
Privileges
Unavailable

Timeline

How it unfolded

  1. Dec 26, 2023CVE 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 privilegesUnavailable in this record.

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
9.8NIST NVDCVSS: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.

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
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-787Out-of-bounds Write
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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