CVE-2025-13943
Zyxel EX3301-T0 Post-Authentication Command Injection Vulnerability
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.
INFO
Published Date :
Feb. 24, 2026, 3:16 a.m.
Last Modified :
Feb. 25, 2026, 6:13 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
Affected Products
The following products are affected by CVE-2025-13943
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | HIGH | 96e50032-ad0d-4058-a115-4d2c13821f9f | ||||
| CVSS 3.1 | HIGH | [email protected] | ||||
| CVSS 3.1 | HIGH | [email protected] |
Solution
- Update Zyxel EX3301-T0 firmware to a non-vulnerable version.
- Restrict access to the log download function.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2025-13943.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2025-13943 is
associated with the following CWEs:
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-2025-13943
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2025-13943 vulnerability anywhere in the article.
-
Daily CyberSecurity
Total Takeover: Critical Zyxel Flaw (CVSS 9.8) Exposes Routers to Remote Command Injection
Networking giant Zyxel has rolled out a wave of urgent security patches addressing multiple vulnerabilities across its fleet of 4G LTE/5G NR CPEs, DSL/Ethernet routers, Fiber ONTs, and Wireless Extend ... Read more
The following table lists the changes that have been made to the
CVE-2025-13943 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
Feb. 25, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Added CPE Configuration AND OR *cpe:2.3:o:zyxel:ee5301-00_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 5.63(acld.2.1)c0 OR cpe:2.3:h:zyxel:ee5301-00:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:zyxel:ee3301-00_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 5.63(acmu.2.1)c0 OR cpe:2.3:h:zyxel:ee3301-00:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:zyxel:dx5401-b1_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 5.17(abyo.7.1)c0 OR cpe:2.3:h:zyxel:dx5401-b1:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:zyxel:dx4510-b1_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 5.17(abyl.10.1)c0 OR cpe:2.3:h:zyxel:dx4510-b1:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:zyxel:dx4510-b0_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 5.17(abyl.10.1)c0 OR cpe:2.3:h:zyxel:dx4510-b0:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:zyxel:dx3301-t0_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 5.50(abvy.7.1)c0 OR cpe:2.3:h:zyxel:dx3301-t0:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:zyxel:dx3300-t1_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 5.50(abvy.7.1)c0 OR cpe:2.3:h:zyxel:dx3300-t1:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:zyxel:dx3300-t0_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 5.50(abvy.7.1)c0 OR cpe:2.3:h:zyxel:dx3300-t0:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:zyxel:ee6510-10_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 5.19(acjq.4.1)c0 OR cpe:2.3:h:zyxel:ee6510-10:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:zyxel:emg3525-t50b_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 5.50(abpm.9.7)c0 OR cpe:2.3:h:zyxel:emg3525-t50b:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:zyxel:emg5523-t50b_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 5.50(abpm.9.7)c0 OR cpe:2.3:h:zyxel:emg5523-t50b:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:zyxel:ex2210-t0_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 5.50(acdi.2.3)c0 OR cpe:2.3:h:zyxel:ex2210-t0:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:zyxel:ex3300-t0_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 5.50(abvy.7.1)c0 OR cpe:2.3:h:zyxel:ex3300-t0:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:zyxel:ex3300-t1_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 5.50(abvy.7.1)c0 OR cpe:2.3:h:zyxel:ex3300-t1:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:zyxel:ex3301-t0_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 5.50(abvy.7.1)c0 OR cpe:2.3:h:zyxel:ex3301-t0:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:zyxel:ex3500-t0_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 5.44(achr.5.1)c0 OR cpe:2.3:h:zyxel:ex3500-t0:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:zyxel:ex3501-t0_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 5.44(achr.5.1)c0 OR cpe:2.3:h:zyxel:ex3501-t0:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:zyxel:ex3510-b0_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 5.17(abup.15.2)c0 OR cpe:2.3:h:zyxel:ex3510-b0:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:zyxel:ex3510-b1_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 5.17(abup.15.2)c0 OR cpe:2.3:h:zyxel:ex3510-b1:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:zyxel:ex3600-t0_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 5.70(acif.2.1)c0 OR cpe:2.3:h:zyxel:ex3600-t0:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:zyxel:ex5401-b1_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 5.17(abyo.7.1)c0 OR cpe:2.3:h:zyxel:ex5401-b1:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:zyxel:ex5510-b0_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 5.17(abqx.11.1)c0 OR cpe:2.3:h:zyxel:ex5510-b0:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:zyxel:ex5512-t0_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 5.70(aceg.5.3)c0 OR cpe:2.3:h:zyxel:ex5512-t0:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:zyxel:ex5601-t0_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 5.70(acdz.5.1)c0 OR cpe:2.3:h:zyxel:ex5601-t0:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:zyxel:ex5601-t1_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 5.70(acdz.5.1)c0 OR cpe:2.3:h:zyxel:ex5601-t1:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:zyxel:ex7501-b0_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 5.18(achn.3.1)c0 OR cpe:2.3:h:zyxel:ex7501-b0:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:zyxel:ex7710-b0_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 5.18(acak.1.6)c0 OR cpe:2.3:h:zyxel:ex7710-b0:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:zyxel:gm4100-b0_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 5.18(accl.2)c0 OR cpe:2.3:h:zyxel:gm4100-b0:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:zyxel:pm7500-00_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 5.61(ackk.1.2)c0 OR cpe:2.3:h:zyxel:pm7500-00:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:zyxel:vmg3625-t50b_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 5.50(abpm.9.7)c0 OR cpe:2.3:h:zyxel:vmg3625-t50b:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:zyxel:vmg4005-b50a_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 5.17(abqa.3.2)c0 OR cpe:2.3:h:zyxel:vmg4005-b50a:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:zyxel:vmg4005-b60a_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 5.17(abqa.3.2)c0 OR cpe:2.3:h:zyxel:vmg4005-b60a:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:zyxel:ax7501-b1_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 5.17(abpc.7.1)c0 OR cpe:2.3:h:zyxel:ax7501-b1:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:zyxel:pe3301-00_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 5.63(acmt.2.1)c0 OR cpe:2.3:h:zyxel:pe3301-00:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:zyxel:pe5301-01_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 5.63(acoj.2.1)c0 OR cpe:2.3:h:zyxel:pe5301-01:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:zyxel:pm3100-t0_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 5.42(acbf.4.1)c0 OR cpe:2.3:h:zyxel:pm3100-t0:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:zyxel:pm5100-t0_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 5.42(acbf.4.1)c0 OR cpe:2.3:h:zyxel:pm5100-t0:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:zyxel:pm5100-t1_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 5.42(acbf.4.1)c0 OR cpe:2.3:h:zyxel:pm5100-t1:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:zyxel:pm7300-t0_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 5.42(abyy.4.1)c0 OR cpe:2.3:h:zyxel:pm7300-t0:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:zyxel:px3321-t1_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 5.44(achk.3)c0 OR cpe:2.3:h:zyxel:px3321-t1:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:zyxel:px3321-t1_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 5.44(acjb.1.5)c0 OR cpe:2.3:h:zyxel:px3321-t1:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:zyxel:px5301-t0_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 5.44(ackb.0.6)c0 OR cpe:2.3:h:zyxel:px5301-t0:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:zyxel:vmg8623-t50b_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 5.50(abpm.9.7)c0 OR cpe:2.3:h:zyxel:vmg8623-t50b:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:zyxel:we3300-00_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 5.70(acka.1.1)c0 OR cpe:2.3:h:zyxel:we3300-00:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:zyxel:wx3100-t0_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 5.50(abvl.4.9)c0 OR cpe:2.3:h:zyxel:wx3100-t0:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:zyxel:wx3401-b1_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 5.17(abve.2.10)c0 OR cpe:2.3:h:zyxel:wx3401-b1:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:zyxel:wx5600-t0_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 5.70(aceb.5.1)c0 OR cpe:2.3:h:zyxel:wx5600-t0:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:zyxel:wx5610-b0_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 5.18(acgj.0.5)c0 OR cpe:2.3:h:zyxel:wx5610-b0:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:zyxel:dm4200-b0_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 5.17(acbs.1.6)c0 OR cpe:2.3:h:zyxel:dm4200-b0:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:zyxel:we4600-00_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 6.70(ackt.0)c0 OR cpe:2.3:h:zyxel:we4600-00:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:zyxel:emg6726-b10a_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 5.13(abnp.8.2)c1 OR cpe:2.3:h:zyxel:emg6726-b10a:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:zyxel:am7510-00_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 5.63(acoe.0.1)c0 OR cpe:2.3:h:zyxel:am7510-00:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:zyxel:vmg4927-b50a_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 5.13(ably.10.2)c0 OR cpe:2.3:h:zyxel:vmg4927-b50a:-:*:*:*:*:*:*:* Added Reference Type Zyxel Corporation: https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-null-pointer-dereference-and-command-injection-vulnerabilities-in-certain-4g-lte-5g-nr-cpe-dsl-ethernet-cpe-fiber-onts-security-routers-and-wireless-extenders-02-24-2026 Types: Vendor Advisory -
New CVE Received by [email protected]
Feb. 24, 2026
Action Type Old Value New Value Added 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. Added CVSS V3.1 AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Added CWE CWE-78 Added Reference https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-null-pointer-dereference-and-command-injection-vulnerabilities-in-certain-4g-lte-5g-nr-cpe-dsl-ethernet-cpe-fiber-onts-security-routers-and-wireless-extenders-02-24-2026