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01 Record

CVE-2022-26532

A argument injection vulnerability in the 'packet-trace' CLI command of Zyxel USG/ZyWALL series firmware versions 4.09 through 4.71, USG FLEX series firmware versions 4.50 through 5.21, ATP series

HighPUBLISHEDCNA: Zyxel
CNA base score7.8 CVSS v3.xCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
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02 Description

A argument injection vulnerability in the 'packet-trace' CLI command of Zyxel USG/ZyWALL series firmware versions 4.09 through 4.71, USG FLEX series firmware versions 4.50 through 5.21, ATP series

03 Exploitation and scoring

Exploitation
Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
SSVC decision
Not assessed by CISA
EPSS probability
4.82% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 91.7% of scored records. A rank, not a probability.
NVD base score
7.8 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD analysis status
Modified. NVD last modified this record on 2026-06-17.
Red Hat severity
No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published
2022-05-24 05:20Z4 YR AGO
Last updated
2024-08-03 05:03Z2 YR AGO
Reserved
2022-03-07
Assigning CNA
Zyxel
Record state
PUBLISHED
Severity
High (CVSS 7.8)
CNA CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weaknesses
  • CWE-88Improper Neutralization of Argument Delimiters in a Command ('Argument Injection')Base
  • CWE-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')Base
Data version
5.1
Document digest
4fe8ad82514adff671ceec0268f93fc40e7173161636d5e76aba3ae236efd25a

05 Affected products

VendorProductVersionsPlatforms
ZyxelUSG/ZyWALL series firmware4.09 through 4.71—
ZyxelUSG FLEX series firmware4.50 through 5.21—
ZyxelATP series firmware4.32 through 5.21—
ZyxelVPN series firmware4.30 through 5.21—
ZyxelNSG series firmware1.00 through 1.33 Patch 4—
ZyxelNXC2500 firmware<= 6.10(AAIG.3)—
ZyxelNAP203 firmware<= 6.25(ABFA.7)—
ZyxelNWA50AX firmware<= 6.25(ABYW.5)—
ZyxelWAC500 firmware<= 6.30(ABVS.2)—
ZyxelWAX510D firmware<= 6.30(ABTF.2)—

06 References