High severity · published Nov 18, 2025
CVE-2025-8693
A post-authentication command injection vulnerability in the "priv" parameter of Zyxel DX3300-T0 firmware version 5.50(ABVY.6.3)C0 and earlier could allow an authenticated…
8.8
CVSS
1%
EPSS
No
On KEV
Description
A post-authentication command injection vulnerability in the "priv" parameter of Zyxel DX3300-T0 firmware version 5.50(ABVY.6.3)C0 and earlier could allow an authenticated attacker to execute operating system (OS) commands on an affected device.
CVSS 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 interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.0% · higher than 64% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
DF
DX3300-T0 firmware · Zyxel
<= 5.50(ABVY.6.3)C0 · source: vendor, NVD
AF
Ax7501-b0 Firmware · Zyxel
through 5.17\(abpc.6.1\)c0 · source: NVD
AF
Ax7501-b1 Firmware · Zyxel
through 5.17\(abpc.6.1\)c0 · source: NVD
DF
Dm4200-b0 Firmware · Zyxel
through 5.17\(acbs.1.3\)c0 · source: NVD
DF
Dx3300-t1 Firmware · Zyxel
through 5.50\(abvy.6.3\)c0 · source: NVD
DF
Dx3301-t0 Firmware · Zyxel
through 5.50\(abvy.6.3\)c0 · source: NVD
DF
Dx4510-b1 Firmware · Zyxel
through 5.17\(abyl.9\)c0 · source: NVD
DF
Dx5401-b0 Firmware · Zyxel
through 5.17\(abyo.7\)b2 · source: NVD
DF
Dx5401-b1 Firmware · Zyxel
through 5.17\(abyo.7\)b2 · source: NVD
EF
Ee3301-00 Firmware · Zyxel
through 5.63\(acmu.1.1\)c0 · source: NVD
EF
Ee5301-00 Firmware · Zyxel
through 5.63\(acld.1.1\)c0 · source: NVD
EF
Ee6510-10 Firmware · Zyxel
through 5.19\(acjq.3\)c0 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-8693
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-8693
Vendor Advisory
https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-uncontrolled-resource-consumption-and-command-injection-vulnerabilities-in-certain-4g-lte-5g-nr-cpe-dsl-ethernet-cpe-fiber-onts-security-routers-and-wireless-extenders-11-18-2025
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