Is CVE-2025-13943 actively exploited?

CVE-2025-13943 has no public evidence of in-the-wild exploitation as of 2026-02-25.

What is the CVSS score for CVE-2025-13943?

CVE-2025-13943 has a CVSS score of 8.8 (HIGH severity). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

How do I patch CVE-2025-13943?

Patch guidance is available from zyxel security advisories. CVEDatabase generates AI-assisted remediation guidance on demand for CVE-2025-13943.

Fix CVE-2025-13943 - HIGH zyxel ee5301-00 firmware

Q: Which products are affected by CVE-2025-13943?

53 products: zyxel ee5301-00 firmware, zyxel ee3301-00 firmware, zyxel dx5401-b1 firmware, zyxel dx4510-b1 firmware, zyxel dx4510-b0 firmware, and 48 more.

Description

A post-authentication command injection vulnerability in the log file download function of the Zyxel EX3301-T0 firmware versions through 5.50(ABVY.7)C0 could allow an authenticated attacker to execute operating system (OS) commands on an affected device.

CVSS Metrics

Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack Vector: network
Complexity: low
Privileges: low
User Action: none
Scope: unchanged
Confidentiality: high
Integrity: high
Availability: high
Weaknesses: CWE-78 · OS Command Injection

Metadata

Primary Vendor: ZYXEL
Published: 2/24/2026
Last Modified: 2/25/2026
Source: NIST NVD
Note: Verify all details with official vendor sources before applying patches.

Affected Products

zyxel : ee5301-00_firmwarezyxel : ee3301-00_firmwarezyxel : dx5401-b1_firmwarezyxel : dx4510-b1_firmwarezyxel : dx4510-b0_firmwarezyxel : dx3301-t0_firmwarezyxel : dx3300-t1_firmwarezyxel : dx3300-t0_firmwarezyxel : ee6510-10_firmwarezyxel : emg3525-t50b_firmwarezyxel : emg5523-t50b_firmwarezyxel : ex2210-t0_firmwarezyxel : ex3300-t0_firmwarezyxel : ex3300-t1_firmwarezyxel : ex3301-t0_firmwarezyxel : ex3500-t0_firmwarezyxel : ex3501-t0_firmwarezyxel : ex3510-b0_firmwarezyxel : ex3510-b1_firmwarezyxel : ex3600-t0_firmwarezyxel : ex5401-b1_firmwarezyxel : ex5510-b0_firmwarezyxel : ex5512-t0_firmwarezyxel : ex5601-t0_firmwarezyxel : ex5601-t1_firmwarezyxel : ex7501-b0_firmwarezyxel : ex7710-b0_firmwarezyxel : gm4100-b0_firmwarezyxel : pm7500-00_firmwarezyxel : vmg3625-t50b_firmwarezyxel : vmg4005-b50a_firmwarezyxel : vmg4005-b60a_firmwarezyxel : ax7501-b1_firmwarezyxel : pe3301-00_firmwarezyxel : pe5301-01_firmwarezyxel : pm3100-t0_firmwarezyxel : pm5100-t0_firmwarezyxel : pm5100-t1_firmwarezyxel : pm7300-t0_firmwarezyxel : px3321-t1_firmwarezyxel : px3321-t1_firmwarezyxel : px5301-t0_firmwarezyxel : vmg8623-t50b_firmwarezyxel : we3300-00_firmwarezyxel : wx3100-t0_firmwarezyxel : wx3401-b1_firmwarezyxel : wx5600-t0_firmwarezyxel : wx5610-b0_firmwarezyxel : dm4200-b0_firmwarezyxel : we4600-00_firmwarezyxel : emg6726-b10a_firmwarezyxel : am7510-00_firmwarezyxel : vmg4927-b50a_firmware

Remediation Guidance

Executive Summary

View on NIST NVD