CVE-2023-49909Public exploitNetwork attack vector

Authenticated code execution via unbounded action copy

Published Apr 9, 2024 · Updated Nov 4, 2025

Stack overflow in TP-Link EAP225 5.1.0 Build 20220926 allows remote authenticated users to execute code via Radio Scheduling HTTP requests. The handler passes the newline-delimited action value to strcpy_until without checking its four-byte destination, corrupting the httpd_portal stack. The CNA also lists EAP115 5.0.4 Build 20220216 as affected, while Talos labels this action-parameter instance as EAP225-specific; exploitation requires an authenticated session.

CVSS severity7.2
High
EPSS probability1.82%
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 TP-Link EAP225 5.1.0 Build 20220926 allows remote authenticated users to execute code via Radio Scheduling HTTP requests. The handler passes the newline-delimited action value to strcpy_until without checking its four-byte destination, corrupting the httpd_portal stack. The CNA also lists EAP115 5.0.4 Build 20220216 as affected, while Talos labels this action-parameter instance as EAP225-specific; exploitation requires an authenticated session.

The record

CVE
CVE-2023-49909
Published
Apr 9, 2024
Updated
Nov 4, 2025
Vendor
TP-Link
Product
EAP225
Classifications
CWE-787, CWE-121, T1190
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Apr 9, 2024CVE publishedPublication date reported by the CVE source.
  2. Nov 4, 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?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=v5.1.0 Build 20220926

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

TP-Link · EAP225version=v5.1.0 Build 20220926
TP-Link · EAP115version=v5.0.4 Build 20220216

Published CVSS scores

7.2Cisco TalosCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
8.8NVDCVSS:3.1/AV:N/AC:L/PR:L/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
Privilegesadmin
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-787Out-of-bounds Write
CWE-121Stack-based Buffer Overflow
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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