ASUS RT-AC88U Download Master up to dm_apply.cgi direct request

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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A vulnerability was found in ASUS RT-AC88U Download Master up to and classified as problematic. This issue affects an unknown functionality of the file /downloadmaster/dm_apply.cgi?action_mode=initial&download_type=General&special_cgi=get_language. The manipulation with an unknown input leads to a direct request vulnerability. Using CWE to declare the problem leads to CWE-425. The web application does not adequately enforce appropriate authorization on all restricted URLs, scripts, or files. Impacted is confidentiality.

The weakness was disclosed 12/08/2020 by Marc Ruef with scip AG as VDB-165677 as confirmed entry (VulDB). The advisory is shared at The public release has been coordinated in cooperation with ASUS. The identification of this vulnerability is CVE-2020-29656. Technical details as well as a public exploit are known. MITRE ATT&CK project uses the attack technique T1006 for this issue.

A public exploit has been developed by Marc Ruef and been published immediately after the advisory. The exploit is available at It is declared as proof-of-concept. The vulnerability was handled as a non-public zero-day exploit for at least 91 days. During that time the estimated underground price was around $0-$5k.

Upgrading to version eliminates this vulnerability.





  • commercial

CPE 2.3info

CPE 2.2info


VulDB Meta Base Score: 6.4
VulDB Meta Temp Score: 6.1

VulDB Base Score: 5.3
VulDB Temp Score: 4.8
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔍



VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍


Class: Direct request
CWE: CWE-425
ATT&CK: T1006

Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Author: Marc Ruef
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍


Threat Intelligenceinfo

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


Recommended: Upgrade
Status: 🔍
Reliability: 🔍

0-Day Time: 🔍
Exploit Delay Time: 🔍

Upgrade: RT-AC88U Download Master


09/08/2020 🔍
09/08/2020 +0 days 🔍
12/08/2020 +91 days 🔍
12/08/2020 +0 days 🔍
12/08/2020 +0 days 🔍
12/09/2020 +0 days 🔍
12/13/2020 +4 days 🔍



Advisory: VDB-165677
Researcher: Marc Ruef
Organization: scip AG
Status: Confirmed
Coordinated: 🔍

CVE: CVE-2020-29656 (🔍)
scip Labs:


Created: 12/08/2020 07:49 AM
Updated: 12/13/2020 09:10 AM
Changes: 12/08/2020 07:49 AM (38), 12/08/2020 07:52 AM (23), 12/09/2020 09:20 AM (1), 12/13/2020 09:07 AM (2), 12/13/2020 09:10 AM (18)
Complete: 🔍


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