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October 10, 2026

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CVE-2025-13943NVD

Vulnerability Summary

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.
Severity Level
HIGH(8.8)
Published Date
Feb 24, 2026
Last Modified
Feb 25, 2026
Exploitation Status
No confirmed exploitation yet
EPSS Score (30-Day)
0.04%Probability
Root Weakness (CWE)
CWE-78: OS Command Injection ↗
The software constructs all or part of an OS command using externally-influenced input, but does not properly neutralize special elements.
CVSS v3.1 Base Metrics — Score 8.8 (HIGH)
Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredLow
User InteractionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh

Affected & Patched Versions

Affected Versions
  • Zyxel Ee5301-00 Firmware < 5.63\(acld.2.1\)c0
  • Zyxel Ee3301-00 Firmware < 5.63\(acmu.2.1\)c0
  • Zyxel Dx5401-b1 Firmware < 5.17\(abyo.7.1\)c0
  • Zyxel Dx4510-b1 Firmware < 5.17\(abyl.10.1\)c0
  • Zyxel Dx4510-b0 Firmware < 5.17\(abyl.10.1\)c0
  • Zyxel Dx3301-t0 Firmware < 5.50\(abvy.7.1\)c0
  • Zyxel Dx3300-t1 Firmware < 5.50\(abvy.7.1\)c0
  • Zyxel Dx3300-t0 Firmware < 5.50\(abvy.7.1\)c0
  • Zyxel Ee6510-10 Firmware < 5.19\(acjq.4.1\)c0
  • Zyxel Emg3525-t50b Firmware < 5.50\(abpm.9.7\)c0
  • Zyxel Emg5523-t50b Firmware < 5.50\(abpm.9.7\)c0
  • Zyxel Ex2210-t0 Firmware < 5.50\(acdi.2.3\)c0
  • Zyxel Ex3300-t0 Firmware < 5.50\(abvy.7.1\)c0
  • Zyxel Ex3300-t1 Firmware < 5.50\(abvy.7.1\)c0
  • Zyxel Ex3301-t0 Firmware < 5.50\(abvy.7.1\)c0
  • Zyxel Ex3500-t0 Firmware < 5.44\(achr.5.1\)c0
  • Zyxel Ex3501-t0 Firmware < 5.44\(achr.5.1\)c0
  • Zyxel Ex3510-b0 Firmware < 5.17\(abup.15.2\)c0
  • Zyxel Ex3510-b1 Firmware < 5.17\(abup.15.2\)c0
  • Zyxel Ex3600-t0 Firmware < 5.70\(acif.2.1\)c0
  • Zyxel Ex5401-b1 Firmware < 5.17\(abyo.7.1\)c0
  • Zyxel Ex5510-b0 Firmware < 5.17\(abqx.11.1\)c0
  • Zyxel Ex5512-t0 Firmware < 5.70\(aceg.5.3\)c0
  • Zyxel Ex5601-t0 Firmware < 5.70\(acdz.5.1\)c0
  • Zyxel Ex5601-t1 Firmware < 5.70\(acdz.5.1\)c0
  • Zyxel Ex7501-b0 Firmware < 5.18\(achn.3.1\)c0
  • Zyxel Ex7710-b0 Firmware < 5.18\(acak.1.6\)c0
  • Zyxel Gm4100-b0 Firmware < 5.18\(accl.2\)c0
  • Zyxel Pm7500-00 Firmware < 5.61\(ackk.1.2\)c0
  • Zyxel Vmg3625-t50b Firmware < 5.50\(abpm.9.7\)c0
  • Zyxel Vmg4005-b50a Firmware < 5.17\(abqa.3.2\)c0
  • Zyxel Vmg4005-b60a Firmware < 5.17\(abqa.3.2\)c0
  • Zyxel Ax7501-b1 Firmware < 5.17\(abpc.7.1\)c0
  • Zyxel Pe3301-00 Firmware < 5.63\(acmt.2.1\)c0
  • Zyxel Pe5301-01 Firmware < 5.63\(acoj.2.1\)c0
  • Zyxel Pm3100-t0 Firmware < 5.42\(acbf.4.1\)c0
  • Zyxel Pm5100-t0 Firmware < 5.42\(acbf.4.1\)c0
  • Zyxel Pm5100-t1 Firmware < 5.42\(acbf.4.1\)c0
  • Zyxel Pm7300-t0 Firmware < 5.42\(abyy.4.1\)c0
  • Zyxel Px3321-t1 Firmware < 5.44\(achk.3\)c0
  • Zyxel Px3321-t1 Firmware < 5.44\(acjb.1.5\)c0
  • Zyxel Px5301-t0 Firmware < 5.44\(ackb.0.6\)c0
  • Zyxel Vmg8623-t50b Firmware < 5.50\(abpm.9.7\)c0
  • Zyxel We3300-00 Firmware < 5.70\(acka.1.1\)c0
  • Zyxel Wx3100-t0 Firmware < 5.50\(abvl.4.9\)c0
  • Zyxel Wx3401-b1 Firmware < 5.17\(abve.2.10\)c0
  • Zyxel Wx5600-t0 Firmware < 5.70\(aceb.5.1\)c0
  • Zyxel Wx5610-b0 Firmware < 5.18\(acgj.0.5\)c0
  • Zyxel Dm4200-b0 Firmware < 5.17\(acbs.1.6\)c0
  • Zyxel We4600-00 Firmware < 6.70\(ackt.0\)c0
  • Zyxel Emg6726-b10a Firmware < 5.13\(abnp.8.2\)c1
  • Zyxel Am7510-00 Firmware < 5.63\(acoe.0.1\)c0
  • Zyxel Vmg4927-b50a Firmware < 5.13\(ably.10.2\)c0
Patched Versions
  • Zyxel Ee5301-00 Firmware 5.63\(acld.2.1\)c0
  • Zyxel Ee3301-00 Firmware 5.63\(acmu.2.1\)c0
  • Zyxel Dx5401-b1 Firmware 5.17\(abyo.7.1\)c0
  • Zyxel Dx4510-b1 Firmware 5.17\(abyl.10.1\)c0
  • Zyxel Dx4510-b0 Firmware 5.17\(abyl.10.1\)c0
  • Zyxel Dx3301-t0 Firmware 5.50\(abvy.7.1\)c0
  • Zyxel Dx3300-t1 Firmware 5.50\(abvy.7.1\)c0
  • Zyxel Dx3300-t0 Firmware 5.50\(abvy.7.1\)c0
  • Zyxel Ee6510-10 Firmware 5.19\(acjq.4.1\)c0
  • Zyxel Emg3525-t50b Firmware 5.50\(abpm.9.7\)c0
  • Zyxel Emg5523-t50b Firmware 5.50\(abpm.9.7\)c0
  • Zyxel Ex2210-t0 Firmware 5.50\(acdi.2.3\)c0
  • Zyxel Ex3300-t0 Firmware 5.50\(abvy.7.1\)c0
  • Zyxel Ex3300-t1 Firmware 5.50\(abvy.7.1\)c0
  • Zyxel Ex3301-t0 Firmware 5.50\(abvy.7.1\)c0
  • Zyxel Ex3500-t0 Firmware 5.44\(achr.5.1\)c0
  • Zyxel Ex3501-t0 Firmware 5.44\(achr.5.1\)c0
  • Zyxel Ex3510-b0 Firmware 5.17\(abup.15.2\)c0
  • Zyxel Ex3510-b1 Firmware 5.17\(abup.15.2\)c0
  • Zyxel Ex3600-t0 Firmware 5.70\(acif.2.1\)c0
  • Zyxel Ex5401-b1 Firmware 5.17\(abyo.7.1\)c0
  • Zyxel Ex5510-b0 Firmware 5.17\(abqx.11.1\)c0
  • Zyxel Ex5512-t0 Firmware 5.70\(aceg.5.3\)c0
  • Zyxel Ex5601-t0 Firmware 5.70\(acdz.5.1\)c0
  • Zyxel Ex5601-t1 Firmware 5.70\(acdz.5.1\)c0
  • Zyxel Ex7501-b0 Firmware 5.18\(achn.3.1\)c0
  • Zyxel Ex7710-b0 Firmware 5.18\(acak.1.6\)c0
  • Zyxel Gm4100-b0 Firmware 5.18\(accl.2\)c0
  • Zyxel Pm7500-00 Firmware 5.61\(ackk.1.2\)c0
  • Zyxel Vmg3625-t50b Firmware 5.50\(abpm.9.7\)c0
  • Zyxel Vmg4005-b50a Firmware 5.17\(abqa.3.2\)c0
  • Zyxel Vmg4005-b60a Firmware 5.17\(abqa.3.2\)c0
  • Zyxel Ax7501-b1 Firmware 5.17\(abpc.7.1\)c0
  • Zyxel Pe3301-00 Firmware 5.63\(acmt.2.1\)c0
  • Zyxel Pe5301-01 Firmware 5.63\(acoj.2.1\)c0
  • Zyxel Pm3100-t0 Firmware 5.42\(acbf.4.1\)c0
  • Zyxel Pm5100-t0 Firmware 5.42\(acbf.4.1\)c0
  • Zyxel Pm5100-t1 Firmware 5.42\(acbf.4.1\)c0
  • Zyxel Pm7300-t0 Firmware 5.42\(abyy.4.1\)c0
  • Zyxel Px3321-t1 Firmware 5.44\(achk.3\)c0
  • Zyxel Px3321-t1 Firmware 5.44\(acjb.1.5\)c0
  • Zyxel Px5301-t0 Firmware 5.44\(ackb.0.6\)c0
  • Zyxel Vmg8623-t50b Firmware 5.50\(abpm.9.7\)c0
  • Zyxel We3300-00 Firmware 5.70\(acka.1.1\)c0
  • Zyxel Wx3100-t0 Firmware 5.50\(abvl.4.9\)c0
  • Zyxel Wx3401-b1 Firmware 5.17\(abve.2.10\)c0
  • Zyxel Wx5600-t0 Firmware 5.70\(aceb.5.1\)c0
  • Zyxel Wx5610-b0 Firmware 5.18\(acgj.0.5\)c0
  • Zyxel Dm4200-b0 Firmware 5.17\(acbs.1.6\)c0
  • Zyxel We4600-00 Firmware 6.70\(ackt.0\)c0
  • Zyxel Emg6726-b10a Firmware 5.13\(abnp.8.2\)c1
  • Zyxel Am7510-00 Firmware 5.63\(acoe.0.1\)c0
  • Zyxel Vmg4927-b50a Firmware 5.13\(ably.10.2\)c0
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🚫Ad-Free — Uninterrupted experience.
🎁7-Day Free Trial — Try Pro or Team, no card required.
📧Email Delivery — Threat intel straight to your inbox.
♾️Unlimited Vendors — Track your entire stack.
🚨All New CVEs — Be the first to know.
📈EPSS Spike Alerts — Catch rising risk before it peaks.
🎯Custom EPSS/CVSS — Filter noise, focus on risk.
🛡️Exploit Intel — A 2nd confirmed-exploit signal beyond KEV.
🐙GitHub Issues — Auto-tracked, no duplicates.
📬Weekly Digest — One clean summary, not inbox spam.
🏷️Watchlist Groups — Tag alerts by team (Infra/AppSec/SOC).
💬Webhooks — Slack & Teams integration.
🔀Smart Routing — Critical alerts to one channel, rest to another.
🚫Ad-Free — Uninterrupted experience.

External References