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CVE-2025-6599

Uncontrolled resource consumption in Zyxel Dx3301 T0 Firmware

CVSS score

7.5

EPSS probability

%0.3

Risk score

0.0

Published

11 mo ago

OverviewPublic Exploits (0)NewsroomVulnerability Timeline
Patch status has not yet been verified

Resmî kaynaklarda yeterli kanıt bulunamadı. Bu sonuç “yama yok” anlamına gelmez.

Impact on My Inventory

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Vulnerability description

DayBreach CVE AI Research

CVE-2025-6599 has vendor, distribution, patch and security-source records on file. We can compare them and prepare an explanation linked to the evidence.

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.

IMPACT: Affected Products and Software

Affected Products

The following products are affected by CVE-2025-6599 vulnerability. Where our threat engine knows the exact affected versions, they are listed below.

IDVENDORPRODUCTACTION
1zyxellte3301-plus firmware View
2zyxellte3301-plus View
3zyxelnr5103 firmware View
4zyxelnr5103 View
5zyxelnr5103e firmware View
6zyxelnr5103e View
7zyxelnr5309 firmware View
8zyxelnr5309 View
9zyxelnr7302 firmware View
10zyxelnr7302 View
11zyxelnr7303 firmware View
12zyxelnr7303 View
13zyxelnebula fwa505 firmware View
14zyxelnebula fwa505 View
15zyxelnebula fwa510 firmware View
16zyxelnebula fwa510 View
17zyxelnebula fwa515 firmware View
18zyxelnebula fwa515 View
19zyxelnebula fwa710 firmware View
20zyxelnebula fwa710 View
21zyxeldm4200-b0 firmware View
22zyxeldm4200-b0 View
23zyxeldx3300-t0 firmware View
24zyxeldx3300-t0 View
25zyxeldx3300-t1 firmware View
26zyxeldx3300-t1 View
27zyxeldx3301-t0 firmware View
28zyxeldx3301-t0 View
29zyxeldx4510-b1 firmware View
30zyxeldx4510-b1 View
31zyxeldx5401-b0 firmware View
32zyxeldx5401-b0 View
33zyxeldx5401-b1 firmware View
34zyxeldx5401-b1 View
35zyxelee3301-00 firmware View
36zyxelee3301-00 View
37zyxelee5301-00 firmware View
38zyxelee5301-00 View
39zyxelee6510-10 firmware View
40zyxelee6510-10 View
41zyxelex3300-t0 firmware View
42zyxelex3300-t0 View
43zyxelex3300-t0 firmware View
44zyxelex3300-t1 firmware View
45zyxelex3300-t1 View
46zyxelex3301-t0 firmware View
47zyxelex3301-t0 View
48zyxelex3500-t0 firmware View
49zyxelex3500-t0 View
50zyxelex3501-t0 firmware View
51zyxelex3501-t0 View
52zyxelex3600-t0 firmware View
53zyxelex3600-t0 View
54zyxelex5401-b0 firmware View
55zyxelex5401-b0 View
56zyxelex5401-b1 firmware View
57zyxelex5401-b1 View
58zyxelex5501-b0 firmware View
59zyxelex5501-b0 View
60zyxelex5510-b0 firmware View
61zyxelex5510-b0 View
62zyxelex5512-t0 firmware View
63zyxelex5512-t0 View
64zyxelex5601-t0 firmware View
65zyxelex5601-t0 View
66zyxelex5601-t1 firmware View
67zyxelex5601-t1 View
68zyxelex7501-b0 firmware View
69zyxelex7501-b0 View
70zyxelex7710-b0 firmware View
71zyxelex7710-b0 View
72zyxelemg3525-t50b firmware View
73zyxelemg3525-t50b View
74zyxelemg5523-t50b firmware View
75zyxelemg5523-t50b View
76zyxelemg5723-t50k firmware View
77zyxelemg5723-t50k View
78zyxelemg6726-b10a firmware View
79zyxelemg6726-b10a View
80zyxelgm4100-b0 firmware View
81zyxelgm4100-b0 View
82zyxelvmg3625-t50b firmware View
83zyxelvmg3625-t50b View
84zyxelvmg3927-b50b firmware View
85zyxelvmg3927-b50b View
86zyxelvmg3927-t50k firmware View
87zyxelvmg3927-t50k View
88zyxelvmg4005-b50a firmware View
89zyxelvmg4005-b50a View
90zyxelvmg4005-b60a firmware View
91zyxelvmg4005-b60a View
92zyxelvmg4005-b50b firmware View
93zyxelvmg4005-b50b View
94zyxelvmg4927-b50a firmware View
95zyxelvmg4927-b50a View
96zyxelvmg8623-t50b firmware View
97zyxelvmg8623-t50b View
98zyxelvmg8825-t50k firmware View
99zyxelvmg8825-t50k View
100zyxelax7501-b0 firmware View
101zyxelax7501-b0 View
102zyxelax7501-b1 firmware View
103zyxelax7501-b1 View
104zyxelpe3301-00 firmware View
105zyxelpe3301-00 View
106zyxelpe5301-01 firmware View
107zyxelpe5301-01 View
108zyxelpm3100-t0 firmware View
109zyxelpm3100-t0 View
110zyxelpm5100-t0 firmware View
111zyxelpm5100-t0 View
112zyxelpm7500-00 firmware View
113zyxelpm7500-00 View
114zyxelpm7300-t0 firmware View
115zyxelpm7300-t0 View
116zyxelpx3321-t1 firmware View
117zyxelpx3321-t1 View
118zyxelpx3321-t1 firmware View
119zyxelpx5301-t0 firmware View
120zyxelpx5301-t0 View
121zyxelscr 50axe firmware View
122zyxelscr 50axe View
123zyxelwe3300-00 firmware View
124zyxelwe3300-00 View
125zyxelwx3100-t0 firmware View
126zyxelwx3100-t0 View
127zyxelwx3401-b0 firmware View
128zyxelwx3401-b0 View
129zyxelwx3401-b1 firmware View
130zyxelwx3401-b1 View
131zyxelwx5600-t0 firmware View
132zyxelwx5600-t0 View
133zyxelwx5610-b0 firmware View
134zyxelwx5610-b0 View
Total affected vendors: 1|Products: 134

RED HAT CSAF/VEX: Product Impact Check

Red Hat has not yet published a CSAF/VEX impact record for this CVE. This does not mean “not affected”.

SCORING: CVSS from Multiple Sources

CVSS Scores

The Common Vulnerability Scoring System is a standardised framework for assessing the severity of vulnerabilities in software and systems. We collect and display CVSS scores from several sources for each CVE.

SCOREVERSIONSEVERITYVECTORSOURCE
7.5CVSS V31HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HNVD
5.3CVSS V31MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:LNVD

Patch and Remediation Guide

Solution & Remediation Advisory

Patch status unknown

İncelenen resmî kaynaklarda yama durumu doğrulanamadı. Bu sonuç “yama yok” anlamına gelmez.

Confirm the affected product and version against the source evidence above.
Restrict access to internet-facing services and apply network segmentation.
Until a patch is confirmed, follow the vendor advisory; do not read an unknown status as “no patch”.
Monitor server logs and network endpoints for signs of anomalous execution.

Public exploit and active exploitation status

Verified exploit intelligence

No verified public PoC, exploit repository or Metasploit module has been found for this CVE yet.

Weakness Classification and Attack Patterns (CWE & CAPEC)

CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorises the common flaws or weaknesses that can lead to vulnerabilities. CVE-2025-6599 is associated with the following CWEs:

CWE-400: Common Weakness Enumeration Entry CWE-400

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2025-6599 weaknesses.

CAPEC-66: SQL InjectionCAPEC-126: Path TraversalCAPEC-28: OS Command Injection

Attack Vector and Accessibility

ExposureAğ üzerinden
PermissionsGerekmiyor
UserGerekmiyor

Official Sources and Advisories

https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-uncontrolled-resource-consumption-and-command-injection-vulnerabilities-in-certain-4g-lte-5g-nr-cpe-dsl-ethernet-cpe-fiber-onts-security-routers-and-wireless-extenders-11-18-2025vendor-advisory

CVSS Vector Radar Chart

7.5 / 10
Attack VectorNetworkComplexityLowPrivilegesNoneUser Interact.NoneConfidentialityLowIntegrityNoneAvailabilityHigh

Vulnerability Scoring Details

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredNone required
User InteractionNone required
Confidentiality (Gizlilik)Low
Integrity (Bütünlük)None
Availability (Erişilebilirlik)High

Yama durumu bilinmiyor

İncelenen resmî kaynaklarda yama durumu doğrulanamadı. Bu sonuç “yama yok” anlamına gelmez.

Follow the vendor

Z
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zyxel

Weakness Type (CWE & CAPEC)

CWE-400

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