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01 Record

CVE-2022-2030

A directory traversal vulnerability caused by specific character sequences within an improperly sanitized URL was identified in some CGI programs of Zyxel USG FLEX 100(W) firmware versions 4.50

MediumPUBLISHEDCNA: Zyxel
CNA base score6.5 CVSS v3.xCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

02 Description

A directory traversal vulnerability caused by specific character sequences within an improperly sanitized URL was identified in some CGI programs of Zyxel USG FLEX 100(W) firmware versions 4.50

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
1.35% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 71.1% of scored records. A rank, not a probability.
NVD base score
6.5 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
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
2022-07-19 05:55Z4 YR AGO
Last updated
2024-08-03 00:24Z2 YR AGO
Reserved
2022-06-08
Assigning CNA
Zyxel
Record state
PUBLISHED
Severity
Medium (CVSS 6.5)
CNA CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Weaknesses
  • CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')Base
Data version
5.1
Document digest
220e427c442df533d7e772a824fbe47420a595476af5aedb06efef44e7627b62

05 Affected products

VendorProductVersionsPlatforms
ZyxelUSG FLEX 100(W) firmware4.50 through 5.30—
ZyxelUSG FLEX 200 firmware4.50 through 5.30—
ZyxelUSG FLEX 500 firmware4.50 through 5.30—
ZyxelUSG FLEX 700 firmware4.50 through 5.30—
ZyxelATP series firmware4.32 through 5.30—
ZyxelVPN series firmware4.30 through 5.30—
ZyxelUSG FLEX 50(W) firmware4.16 through 5.30—
ZyxelUSG 20(W)-VPN firmware4.16 through 5.30—
ZyxelUSG/ZyWALL series firmware4.11 through 4.72—

06 References