CVE-2022-30526

HIGH
7.8
CVSS Score
Published: July 19, 2022 at 05:45 AM UTC
Updated: June 17, 2026 at 04:43 AM UTC
56 products affected across 1 vendorUsg Flex 100W FirmwareUSG FLEX 200 firmwareUSG FLEX 700 firmware

Using USG FLEX 100(W) firmware by Zyxel?

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Severity
HIGH7.8
Exploit prediction
EPSS 1%

Description

A privilege escalation vulnerability was identified in the CLI command of Zyxel USG FLEX 100(W) firmware versions 4.50 through 5.30, USG FLEX 200 firmware versions 4.50 through 5.30, USG FLEX 500 firmware versions 4.50 through 5.30, USG FLEX 700 firmware versions 4.50 through 5.30, USG FLEX 50(W) firmware versions 4.16 through 5.30, USG20(W)-VPN firmware versions 4.16 through 5.30, ATP series firmware versions 4.32 through 5.30, VPN series firmware versions 4.30 through 5.30, USG/ZyWALL series firmware versions 4.09 through 4.72, which could allow a local attacker to execute some OS commands with root privileges in some directories on a vulnerable device.

Affected

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

4.32 ≤ v ≤ 5.30
4.32 ≤ v ≤ 5.30
zyxel-atp100w (same device)
4.32 ≤ v ≤ 5.30
zyxel-atp200 (same device)
4.32 ≤ v ≤ 5.30
zyxel-atp500 (same device)
4.32 ≤ v ≤ 5.30
zyxel-atp700 (same device)
4.32 ≤ v ≤ 5.30
zyxel-atp800 (same device)
4.16 ≤ v ≤ 5.30
4.30 ≤ v ≤ 5.30
zyxel-usg-2200-vpn (same device)
4.50 ≤ v ≤ 5.30
zyxel-usg-flex-100w (same device)
v ≤ 5.304.50 ≤ v ≤ 5.30
zyxel-usg-flex-200 (same device)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

CVSS

7.8HIGHZyxel
Attack Vector
LOCAL
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-269

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