CVE-2025-6599
What it is
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.
At a glance
- Exploitability
- Can be exploited over the network without logging in. Limited direct impact.
- Exploit odds
- 0.3% chance of exploitation in the next 30 days (EPSS).
- Fix
- A patch, advisory or fixed version is referenced. Upgrade or apply it.
Timeline
- PublishedDisclosed publicly on CVE.org and NVD
- Last updatedMost recent change to the record
Why it ranks here
- Exploited in the wild: no, CISA does not list it.
- Exploit odds: 0.3% in the next 30 days (EPSS).
- Severity: 5.3 MEDIUM (CVSS).
- Fix: a patch or advisory is linked.
Details
- Published
- Last modified
- Exploit probability
- 0.3% · EPSS, next 30 days
- Weakness
- CWE-400 · Uncontrolled resource consumption
- Record status
- Analyzed
Affected
- Zyxel lte3301-plus Firmware ≤ 1.00\(abqu.7\)c0
- Zyxel nr5103 Firmware ≤ 4.19\(abyc.8\)c0
- Zyxel nr5103e Firmware ≤ 1.00\(acdj.1\)c0
- Zyxel nr5309 Firmware ≤ 1.00\(ackp.1\)b3
- Zyxel nr7302 Firmware ≤ 5.00\(acha.5\)c0
- Zyxel nr7303 Firmware ≤ 1.00\(acei.1\)c0
- Zyxel Nebula fwa505 Firmware ≤ 1.19\(acko.0\)c0
- Zyxel Nebula fwa510 Firmware ≤ 1.20\(acgd.1\)c0
Attack profile CVSS 3.1 · 5.3
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- None
- Integrity
- None
- Availability
- Low
Raw vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Is it in your code?
Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.
Read https://cve-list.com/agent/cve/CVE-2025-6599.md and follow it. Check whether this project is affected by CVE-2025-6599. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.
