Unauthenticated web-interface crash via oversized form value
Published Apr 9, 2024 · Updated Nov 4, 2025
Stack-based buffer overflow in TP-Link EAP225 V3 5.1.0 Build 20220926 allows remote attackers to crash its web interface via HTTP POST. The _http_parser_formArg function copies an attacker-controlled form value into a 0x801-byte stack buffer using its calculated length rather than the buffer limit. No authentication is required; a value of at least 0x815 bytes crashes httpd_portal, which remains unavailable until the access point restarts.
Summary
What happened
Stack-based buffer overflow in TP-Link EAP225 V3 5.1.0 Build 20220926 allows remote attackers to crash its web interface via HTTP POST. The _http_parser_formArg function copies an attacker-controlled form value into a 0x801-byte stack buffer using its calculated length rather than the buffer limit. No authentication is required; a value of at least 0x815 bytes crashes httpd_portal, which remains unavailable until the access point restarts.
The record
- CVE
- CVE-2023-48724
- Published
- Apr 9, 2024
- Updated
- Nov 4, 2025
- Vendor
- TP-Link
- Product
- EAP225
- Classifications
- CWE-121, T1499.004
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Apr 9, 2024CVE publishedPublication date reported by the CVE source.
- 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.
- Affected versionversion=v5.1.0 Build 20220926
What conditions does exploitation require?
What is affected?
Published CVSS scores
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.
Weakness, pattern, technique
Public exploit references
- Cisco Talos HTTP POST crash procedurefunctional · demonstrated
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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