OS Command Injection in ZyXEL Communications Corp. products - CVE-2026-1460

Vulnerability identifier: #VU128270

CSH Severity: Low

CVSS v4: 8.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2026-1460

CWE-ID: CWE-78

Exploitation vector: Remote access

Exploit availability: No public exploit available

The vulnerability allows a remote user to execute arbitrary shell commands on the target system.

The vulnerability exists due to improper input validation in the "DomainName" parameter of the DHCP configuration file. A remote administrator can pass specially crafted data to the application and execute arbitrary OS commands on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Nebula LTE7461-M602
Nebula NR5101
Nebula LTE3301-PLUS
Nebula FWA70
Nebula FWA510
Nebula FWA515
Nebula FWA710
Nebula FWA505
VMG4005-B60A
VMG4005-B50A
AX7501-B1
DX5401-B1
EX5401-B1
EX7710-B0
GM4100-B0
EE6510-10
PX5301-T0
PX5302-00
EX3501-T0
EX3500-T0
EX2210-T0
EX3300-T1
EX3300-T0
DX3300-T0
DX3300-T1
DX3301-T0
EX3301-T0
AM7510-00
EE5301-00
PE3301-00
EE3301-00
PE5301-01
WE3300-00
EX3600-T0
EX7501-B0
EX5601-T1
EX5601-T0
WX5600-T0
EX5512-T0
WE4600-00
Nebula NR7101
VMG8623-T50B
EMG5523-T50B
EMG3525-T50B
VMG3625-T50B

Install updates from vendor's website.

Nebula LTE7461-M602 - update to 1.15(ACEV.4)V0
Nebula NR7101 - update to 1.16(ACCC.2)V0
Nebula NR5101 - update to 1.16(ACCG.1)V0
Nebula LTE3301-PLUS - update to 1.18(ACCA.7)V0
Nebula FWA70 - update to 1.51(ACRF.0)V0
Nebula FWA510 - update to 1.60(ACGD.1)V0
Nebula FWA515 - update to 1.60(ACPZ.1)V0
Nebula FWA710 - update to 1.60(ACGC.2)V0
Nebula FWA505 - update to 1.60(ACKO.3)V0
VMG4005-B60A - update to 5.17(ABQA.3.3)C0
VMG4005-B50A - update to 5.17(ABQA.3.3)C0
AX7501-B1 - update to 5.17(ABPC.7.2)C0
DX5401-B1 - update to 5.17(ABYO.7.2)C0
EX5401-B1 - update to 5.17(ABYO.7.2)C0
EX7710-B0 - update to 5.18(ACAK.1.7)C0
GM4100-B0 - update to 5.18(ACCL.2.1)C0
EE6510-10 - update to 5.19(ACJQ.4.2)C0
PX5301-T0 - update to 5.44(ACKB.0.7)C0
PX5302-00 - update to 5.44(ACNM.0.1)C0
EX3501-T0 - update to 5.44(ACHR.6)C0
EX3500-T0 - update to 5.44(ACHR.6)C0
EX2210-T0 - update to 5.50(ACDI.2.5)C0
EX3300-T1 - update to 5.50(ABVY.7.2)C0
EX3300-T0 - update to 5.50(ABVY.7.2)C0
DX3300-T0 - update to 5.50(ABVY.7.2)C0
DX3300-T1 - update to 5.50(ABVY.7.2)C0
DX3301-T0 - update to 5.50(ABVY.7.2)C0
EX3301-T0 - update to 5.50(ABVY.7.2)C0
VMG8623-T50B - update to 5.50(ABPM.9.8)C0
EMG5523-T50B - update to 5.50(ABPM.9.8)C0
EMG3525-T50B - update to 5.50(ABPM.9.8)C0
VMG3625-T50B - update to 5.50(ABPM.9.8)C0
AM7510-00 - update to 5.63(ACOR.0.2)C0
EE5301-00 - update to 5.63(ACLD.3.1)C0
PE3301-00 - update to 5.63(ACMT.3.1)C0
EE3301-00 - update to 5.63(ACMU.3.1)C0
PE5301-01 - update to 5.63(ACOJ.3.1)C0
WE3300-00 - update to 5.70(ACKA.2)C0
EX3600-T0 - update to 5.70(ACIF.3)C0
EX7501-B0 - update to 5.18(ACHN.3.2)C0
EX5601-T1 - update to 5.70(ACDZ.6)C0
EX5601-T0 - update to 5.70(ACDZ.6)C0
WX5600-T0 - update to 5.70(ACEB.6)C0
EX5512-T0 - update to 5.70(ACEG.5.5)C0
WE4600-00 - update to 6.70(ACKT.1)C0

• https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-command-injection-vulnerabilities-in-certain-4g-lte-5g-nr-cpe-dsl-ethernet-cpe-fiber-onts-and-wireless-extenders-04-28-2026

• Multiple vulnerabilities in Zyxel products