TP-LINK WR740N Wireless N Router up to 3.16.4 HTTP Request denial of service

CVSS Meta Temp Score
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Current Exploit Price (≈)
Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.
CTI Interest Score
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A vulnerability, which was classified as critical, was found in TP-LINK WR740N Wireless N Router up to 3.16.4 (Router Operating System). Affected is an unknown code block of the component HTTP Request Handler. The manipulation with an unknown input leads to a denial of service vulnerability. CWE is classifying the issue as CWE-404. The program does not release or incorrectly releases a resource before it is made available for re-use. This is going to have an impact on availability.

The bug was discovered 03/17/2013. The weakness was released 03/21/2013 by Gjoko Krstic (LiquidWorm) with Zero Science Lab as ZSL-2013-5135 as not defined exploit (Website). The advisory is shared for download at The public release happened without coordination with the vendor. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. Technical details are unknown but a public exploit is available.

A public exploit has been developed by LiquidWorm and been published immediately after the advisory. It is declared as proof-of-concept. The exploit is shared for download at The vulnerability was handled as a non-public zero-day exploit for at least 4 days. During that time the estimated underground price was around $0-$5k.

Upgrading eliminates this vulnerability. A possible mitigation has been published 1 weeks after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (82995) and Exploit-DB (24866).





CPE 2.3info

CPE 2.2info


VulDB Meta Base Score: 7.5
VulDB Meta Temp Score: 6.8

VulDB Base Score: 7.5
VulDB Temp Score: 6.8
VulDB Vector: 🔍
VulDB Reliability: 🔍



VulDB Base Score: 🔍
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Class: Denial of service
CWE: CWE-404
ATT&CK: T1499

Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Author: LiquidWorm
Download: 🔍
Price Prediction: 🔍
Current Price Estimation: 🔍


Exploit-DB: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍


Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍
Exploit Delay Time: 🔍


03/17/2013 🔍
03/21/2013 +4 days 🔍
03/21/2013 +0 days 🔍
03/21/2013 +0 days 🔍
03/22/2013 +1 days 🔍
03/22/2013 +0 days 🔍
03/25/2013 +3 days 🔍
03/28/2013 +3 days 🔍
03/23/2019 +2186 days 🔍



Advisory: ZSL-2013-5135
Researcher: Gjoko Krstic (LiquidWorm)
Organization: Zero Science Lab
Status: Not defined
X-Force: 82995 - TL-WR740N HTTP GET request denial of service, Medium Risk
SecurityFocus: 58623 - TP-LINK TL-WR740N Router Denial of Service Vulnerability
Secunia: 52713 - TP-LINK TL-WR740N httpd Denial of Service Vulnerability, Less Critical
OSVDB: 91581

scip Labs:


Created: 03/25/2013 04:15 PM
Updated: 03/23/2019 08:25 AM
Changes: 03/25/2013 04:15 PM (58), 03/23/2019 08:25 AM (14)
Complete: 🔍


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