CVE-2023-44023Public exploitNetwork attack vector

Unauthenticated service crash via unchecked SSID length

Published Sep 27, 2023 · Updated Sep 24, 2024

Stack overflow in Tenda AC10U 1.0 allows remote attackers to crash the HTTP service by submitting an oversized SSID to its setup endpoint. In firmware build US_AC10UV1.0RTL_V15.03.06.49_multi_TDE01, form_fast_setting_wifi_set passes the user-controlled ssid value without checking its length, overflowing a stack buffer. The endpoint is network-reachable without authentication, and the published proof of concept demonstrates an httpd segmentation fault; its root-shell claim is not demonstrated.

CVSS severity9.8
Critical
EPSS probability0.91%
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 AC10U 1.0 allows remote attackers to crash the HTTP service by submitting an oversized SSID to its setup endpoint. In firmware build US_AC10UV1.0RTL_V15.03.06.49_multi_TDE01, form_fast_setting_wifi_set passes the user-controlled ssid value without checking its length, overflowing a stack buffer. The endpoint is network-reachable without authentication, and the published proof of concept demonstrates an httpd segmentation fault; its root-shell claim is not demonstrated.

The record

CVE
CVE-2023-44023
Published
Sep 27, 2023
Updated
Sep 24, 2024
Vendor
Shenzhen Tenda Technology Co., Ltd.
Product
AC10U
Classifications
CWE-119, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 27, 2023CVE publishedPublication date reported by the CVE source.
  2. Sep 24, 2024Record 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 us_ac10uv1.0rtl_v15.03.06.49_multi_tde01

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Shenzhen Tenda Technology Co., Ltd. · AC10Uversion=1.0 us_ac10uv1.0rtl_v15.03.06.49_multi_tde01

Published CVSS scores

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.

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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-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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