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No exploitation reportedFix available

CVE-2025-13943

No exploitation reported by the sources we read.

  • Published2026-02-24
  • Fixed in5.44\(achk.3\)c0 · 5.44\(acjb.1.5\)c0
  • WeaknessCWE-78

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

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.

Timeline

dates in UTC
  1. 2026-02-2403:16CVE publishedNVD

Versions per branch

NVD
Zyxel px3321-t1 firmwareversion to verify
BranchAffectedFixed in
5.44< 5.44\(achk.3\)c05.44\(achk.3\)c0
5.44< 5.44\(acjb.1.5\)c05.44\(acjb.1.5\)c0
Zyxel am7510-00 firmwareversion to verify
BranchAffectedFixed in
5.63< 5.63\(acoe.0.1\)c05.63\(acoe.0.1\)c0
Zyxel ax7501-b1 firmwareversion to verify
BranchAffectedFixed in
5.17< 5.17\(abpc.7.1\)c05.17\(abpc.7.1\)c0

49 more products in the sources.

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Products declared by the CNA1 product

As Zyxel, the CNA that assigned this CVE, declared them in the CVE record; versions as written.

  • Zyxel EX3301-T0 firmwareother versions: not affected
    Affected
    • = <= 5.50(ABVY.7)C0no fix stated

Source: the CNA record (CVE Program), © The MITRE Corporation,CVE Terms of UseCVE recordupdated 2026-02-24

Fix

  1. Update Zyxel px3321-t1 firmware to 5.44\(achk.3\)c0 · 5.44\(acjb.1.5\)c0

Advisories and patches

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof of concept
Metasploit modules
none listed
Metasploit Framework

Sources

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Published
2026-02-24
Last Modified
2026-06-17
NVD status
Analyzed
GitHub Advisory
GHSA-mg73-f2jm-wph7

Frequently asked questions

What is CVE-2025-13943?

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.

Is CVE-2025-13943 actively exploited?

Active exploitation of CVE-2025-13943 has not been confirmed. Its EPSS score was 1.5% on 2026-11-08, the estimated probability of exploitation in the next 30 days.

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

CVE-2025-13943 has a CVSS v3 base score of 8.8 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

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