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01 Record

CVE-2023-5650

An improper privilege management vulnerability in the ZySH of the Zyxel ATP series firmware versions 4.32 through 5.37, USG FLEX series firmware versions 4.50 through 5.37, USG FLEX 50(W) series

MediumPUBLISHEDCNA: Zyxel
CNA base score5.5 CVSS v3.xCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

02 Description

An improper privilege management vulnerability in the ZySH of the Zyxel ATP series firmware versions 4.32 through 5.37, USG FLEX series firmware versions 4.50 through 5.37, USG FLEX 50(W) 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
0.21% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 11.6% of scored records. A rank, not a probability.
NVD base score
5.5 (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:N/I:H/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
2023-11-28 01:53Z2 YR AGO
Last updated
2024-08-02 08:07Z2 YR AGO
Reserved
2023-10-19
Assigning CNA
Zyxel
Record state
PUBLISHED
Severity
Medium (CVSS 5.5)
CNA CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
Weaknesses
  • CWE-269Improper Privilege ManagementClass
Data version
5.1
Document digest
ea16d176f82ecc2344ab585632c4563540e75829d348b6de95631cce2347c92f

05 Affected products

VendorProductVersionsPlatforms
ZyxelATP series firmwareversions 4.32 through 5.37—
ZyxelUSG FLEX series firmwareversions 4.50 through 5.37—
ZyxelUSG FLEX 50(W) series firmwareversions 4.16 through 5.37—
ZyxelUSG20(W)-VPN series firmwareversions 4.16 through 5.37—
ZyxelVPN series firmwareversions 4.30 through 5.37—

06 References