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VulnerabilityPublished Updated

CVE-2025-8078: Zyxel ATP series firmware · OS Command Injection

Affects Zyxel ATP series firmwareSource CVE Database V5

0

Not known to be exploited · CVSS 7.2 High.

Data as of 26 Oct 2026, 10:12 UTC

CVSS 3.1 base score
7.2High
How severe the flaw is on the 0–10 CVSS scale.
EPSS
1.4% chance of exploitation in 30 days – higher than 73% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 21 Oct 2025

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.

What to do

Affected software

ProductAffectedFixed in
Zyxel ATP series firmwareAffected
  • >=4.32
Fixed in–

AI-suggested

To mitigate CVE-2025-8078, organizations should: 1) Monitor Zyxel's official channels for firmware updates addressing this vulnerability and apply patches promptly once released. 2) Restrict administrative access to the devices by enforcing strong authentication mechanisms, such as multi-factor authentication, and limiting access to trusted IP addresses or management networks. 3) Regularly audit and monitor administrative activities and CLI command usage to detect suspicious behavior indicative of exploitation attempts. 4) Employ network segmentation to isolate management interfaces from general user networks, reducing exposure. 5) Consider deploying additional security controls such as intrusion detection/prevention systems to identify anomalous command execution patterns. 6) Educate administrators on the risks of command injection and the importance of secure credential management. 7) If patching is delayed, consider temporary compensating controls like disabling remote CLI access or using VPNs with strict access policies for management traffic.

Description

A post-authentication command injection vulnerability in Zyxel ATP series firmware versions from V4.32 through V5.40, USG FLEX series firmware versions from V4.50 through V5.40, USG FLEX 50(W) series firmware versions from V4.16 through V5.40, and USG20(W)-VPN series firmware versions from V4.16 through V5.40 could allow an authenticated attacker with administrator privileges to execute operating system (OS) commands on the affected device by passing a crafted string as an argument to a CLI command.

References

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