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01 Record

CVE-2021-35030

A vulnerability was found in the CGI program in Zyxel GS1900-8 firmware version V2.60, that did not properly sterilize packet contents and could allow an authenticated, local user to perform a

LowPUBLISHEDCNA: Zyxel
CNA base score3.5 CVSS v3.xCVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:L

02 Description

A vulnerability was found in the CGI program in Zyxel GS1900-8 firmware version V2.60, that did not properly sterilize packet contents and could allow an authenticated, local user to perform a

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
0.26% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 18.7% of scored records. A rank, not a probability.
NVD base score
4.3 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:3.1/AV:A/AC:L/PR:H/UI:R/S:C/C:L/I:L/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
2021-07-26 11:20Z5 YR AGO
Last updated
2024-09-17 01:46Z2 YR AGO
Reserved
2021-06-17
Assigning CNA
Zyxel
Record state
PUBLISHED
Severity
Low (CVSS 3.5)
CNA CVSS vector
CVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:L
Weaknesses
  • CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')Base
Data version
5.1
Document digest
9db283b8ef7fda26ae3ca577abcc3a59918a0daeaf591083932e5b0d9165304c

05 Affected products

VendorProductVersionsPlatforms
ZyxelGS1900-8 Firmware2.60—

06 References