CVE-2025-8693

HIGH
8.8
CVSS Score
Published: November 18, 2025 at 01:25 AM UTC
Updated: October 18, 2026 at 08:10 PM UTC
51 products affected across 1 vendorEmg3525-t50b FirmwareEmg5523-t50b FirmwareVmg8623-t50b Firmware· also runs on 54 platforms

Using DX3300-T0 firmware by Zyxel?

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Severity
HIGH8.8
Exploit prediction
EPSS 1%
SSVC
No known exploit

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

All versionsv ≤ 5.17\(abpc.6.1\)c0
zyxel-ax7501-b0 (same device)
All versionsv ≤ 5.17\(acbs.1.3\)c0
zyxel-dm4200-b0 (same device)
All versionsv ≤ 5.50\(abvy.6.3\)c0
zyxel-dx3300-t0 (same device)
All versionsv ≤ 5.50\(abvy.6.3\)c0
zyxel-dx3300-t1 (same device)
All versionsv ≤ 5.50\(abvy.6.3\)c0
zyxel-dx3301-t0 (same device)
All versionsv ≤ 5.17\(abyl.9\)c0
zyxel-dx4510-b1 (same device)
All versionsv ≤ 5.17\(abyo.7\)b2
zyxel-dx5401-b0 (same device)
All versionsv ≤ 5.17\(abyo.7\)b2
zyxel-dx5401-b1 (same device)
All versionsv ≤ 5.63\(acmu.1.1\)c0
zyxel-ee3301-00 (same device)
All versionsv ≤ 5.63\(acld.1.1\)c0
zyxel-ee5301-00 (same device)

Runs on — not affected

The affected product only carries this flaw when running on these platforms. The platforms themselves are not vulnerable.

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

8.8HIGHZyxel
Attack Vector
NETWORK
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusANALYZED
CWE
CWE-78

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