Zyxel DX3301-T0 up to 5.50(ABVY.6.3)C0 Web Management Interface resource consumption

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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6.0$0-$5k0.00

Summaryinfo

A vulnerability was found in Zyxel DX3301-T0 up to 5.50(ABVY.6.3)C0. It has been declared as problematic. Impacted is an unknown function of the component Web Management Interface. Such manipulation leads to resource consumption. This vulnerability is traded as CVE-2025-6599. The attack may be launched remotely. There is no exploit available.

Detailsinfo

A vulnerability was found in Zyxel DX3301-T0 up to 5.50(ABVY.6.3)C0 and classified as problematic. Affected by this issue is some unknown processing of the component Web Management Interface. The manipulation with an unknown input leads to a resource consumption vulnerability. Using CWE to declare the problem leads to CWE-400. The product does not properly control the allocation and maintenance of a limited resource, thereby enabling an actor to influence the amount of resources consumed, eventually leading to the exhaustion of available resources. Impacted is availability. CVE summarizes:

An uncontrolled resource consumption vulnerability in the web server of Zyxel DX3301-T0 firmware version 5.50(ABVY.6.3)C0 and earlier could allow an attacker to perform Slowloris‑style denial‑of‑service (DoS) attacks. Such attacks may temporarily block legitimate HTTP requests and partially disrupt access to the web management interface, while other networking services remain unaffected.

This vulnerability is handled as CVE-2025-6599 since 06/25/2025. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 12/17/2025). The MITRE ATT&CK project declares the attack technique as T1499.

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 vulnerability database at CNNVD (CNNVD-202511-2138). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.0
VulDB Meta Temp Score: 6.0

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

NVD Base Score: 7.5
NVD Vector: 🔒

CNA Base Score: 5.3
CNA Vector (Zyxel): 🔒

CVSSv2info

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

Exploitinginfo

Class: Resource consumption
CWE: CWE-400 / CWE-404
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

06/25/2025 CVE reserved
11/18/2025 +146 days Advisory disclosed
11/18/2025 +0 days VulDB entry created
12/17/2025 +29 days VulDB entry last update

Sourcesinfo

Vendor: zyxel.com

Status: Not defined

CVE: CVE-2025-6599 (🔒)
GCVE (CVE): GCVE-0-2025-6599
GCVE (VulDB): GCVE-100-332744
CNNVD: CNNVD-202511-2138 - Zyxel DX3301-T0 资源管理错误漏洞

Entryinfo

Created: 11/18/2025 07:38
Updated: 12/17/2025 01:17
Changes: 11/18/2025 07:38 (61), 11/19/2025 19:19 (6), 12/17/2025 01:17 (11)
Complete: 🔍
Cache ID: 216::103

VulDB is the best source for vulnerability data and more expert information about this specific topic.

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