TOTOLINK N300RB 8.54 backdoor

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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8.9$0-$5k0.00

Summaryinfo

A vulnerability marked as critical has been reported in TOTOLINK N300RB 8.54. Affected by this vulnerability is an unknown functionality. Performing a manipulation results in backdoor. This vulnerability was named CVE-2025-52089. The attack may be initiated remotely. In addition, an exploit is available.

Detailsinfo

A vulnerability, which was classified as critical, was found in TOTOLINK N300RB 8.54. This affects an unknown code. The manipulation with an unknown input leads to a backdoor vulnerability. CWE is classifying the issue as CWE-912. The product contains functionality that is not documented, not part of the specification, and not accessible through an interface or command sequence that is obvious to the product's users or administrators. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

A hidden remote support feature protected by a static secret in TOTOLINK N300RB firmware version 8.54 allows an authenticated attacker to execute arbitrary OS commands with root privileges.

The weakness was presented by Skander Belabed with Magellan Sécurité. The advisory is shared at 0x09.dev. This vulnerability is uniquely identified as CVE-2025-52089 since 06/16/2025. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Technical details are unknown but a public exploit is available. MITRE ATT&CK project uses the attack technique T1588.001 for this issue.

The exploit is shared for download at exploit-db.com. It is declared as proof-of-concept.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the databases at Exploit-DB (52363) and EUVD (EUVD-2025-21164). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Vendor

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Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 9.8
VulDB Meta Temp Score: 8.9

VulDB Base Score: 9.8
VulDB Temp Score: 8.9
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Backdoor
CWE: CWE-912
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Access: Public
Status: Proof-of-Concept
Download: 🔒

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Exploit-DB: 🔒

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

06/16/2025 CVE reserved
07/11/2025 +25 days Advisory disclosed
07/11/2025 +0 days VulDB entry created
07/19/2025 +7 days VulDB entry last update

Sourcesinfo

Vendor: totolink.net

Advisory: 0x09.dev
Researcher: Skander Belabed
Organization: Magellan Sécurité
Status: Not defined

CVE: CVE-2025-52089 (🔒)
GCVE (CVE): GCVE-0-2025-52089
GCVE (VulDB): GCVE-100-316173
EUVD: 🔒
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 07/11/2025 20:31
Updated: 07/19/2025 01:05
Changes: 07/11/2025 20:31 (52), 07/11/2025 22:30 (3), 07/14/2025 20:54 (1), 07/17/2025 15:36 (11), 07/19/2025 01:05 (1)
Complete: 🔍
Committer: Skander
Cache ID: 216::103

Submitinfo

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